# Smart Power
## Description
Welcome to your new project. Imagine what you can build here.
## Project Details
- **Owner:** jayeshpathak
- **Created:** 3/3/2026
- **Last Updated:** 3/8/2026
- **Visibility:** Public
- **System Architecture:** flowchart TD
subgraph AC_DOMAIN [AC Input And Sockets]
AC_IN_L["AC_L_IN"] --> FUSE["Fuse 3.15A T"] --> MOV1["MOV Surge"] --> AC_BUS_L["AC_L_BUS"]
AC_IN_N["AC_N_IN"] --> AC_BUS_N["AC_N_BUS"]
EARTH_NET["EARTH"]
AC_BUS_L --> RELAY_CONTACTS["4x Relay Contacts"] --> SOCKET_L["Socket_L x4"]
AC_BUS_N --> SOCKET_N["Socket_N x4"]
EARTH_NET --> SOCKET_E["Socket_E x4"]
RELAY_CONTACTS --> SNUBBERS["RC Snubber Per Relay"]
end
subgraph POWER [Power Conversion]
AC_BUS_L --> SMPS["Isolated SMPS 230VAC to 5V"]
AC_BUS_N --> SMPS
SMPS --> V5_MAIN["5V_MAIN"]
V5_MAIN --> V5_RELAY["5V_RELAY"]
V5_MAIN --> V5_LOGIC["5V_LOGIC"]
V5_LOGIC --> LDO33["LDO 3.3V"] --> V33["3V3_MAIN"]
LDO33 --> STAR_GND["Star Ground At LDO GND"]
STAR_GND --> GND_LOGIC["GND_LOGIC"]
STAR_GND --> GND_RELAY["GND_RELAY"]
STAR_GND --> GND_ANALOG["GND_ANALOG"]
end
subgraph CONTROLLER [Controller And Ethernet]
V33 --> ESP32["ESP32-S3-WROOM-1"]
GND_LOGIC --> ESP32
ESP32 --> RMII["RMII Signals"] --> PHY["LAN8720 PHY"] --> RJ45["RJ45 MagJack"]
PHY --> REFCLK["REF_CLK 50MHz to GPIO0"]
end
subgraph METERING [Energy Metering]
ESP32 --> SPI_BUS["SPI SCLK MOSI MISO"] --> ATM1["ATM90E26 x4"]
ESP32 --> CS_LINES["CS GPIO4-7"] --> ATM1
ATM1 --> CT_INPUTS["CT Burden Inputs"]
ATM1 --> V_SENSE["AC Voltage Divider + RC + Clamp"]
V_SENSE --> AC_BUS_L
GND_ANALOG --> ATM1
end
subgraph RELAYS [Relay Drivers]
V5_RELAY --> COILS["Relay Coils x8"]
ESP32 --> GPIO_MAP["GPIO15/16 17/18 21/38 39/40"] --> DRIVERS["Opto + NPN Drivers x8"] --> COILS
GND_RELAY --> DRIVERS
end
subgraph UI_ADC [UI And Sensing]
ESP32 --> TEMP["NTC to GPIO1"]
ESP32 --> EARTH_DET["Earth Detect GPIO2"]
ESP32 --> NEUT_DET["Neutral Detect GPIO3"]
ESP32 --> LEDS["Green GPIO41 Red GPIO42"]
ESP32 --> BUZZ["Buzzer GPIO45 via NPN"]
ESP32 --> WIFI_SW["WiFi Switch GPIO46"]
end
## Key Components
### BZ1 — [Buzzer](https://www.flux.ai/jecstronic/buzzer~1j2.md)
- Package: Through Hole
- Part Type: Buzzer
- Role: Buzzer
- Role Details: Audible buzzer driven by NPN from GPIO45
**Pins:**
- -
- +
### D1 — [1N4007W](https://www.flux.ai/vasy_skral/1n4007w~xpy.md)
- Manufacturer Name: Shandong Jingdao Microelectronics
- Part Type: Diode
- Role Details: K1 SET coil flyback; K->5V_RELAY, A->Q9 collector
- Package: SOD-123FL
- Datasheet URL: https://www.evvosemi.com/Uploads/file/20240515/2024051515581665.pdf
- Role: Flyback
- Manufacturer Part Number: 1N4007W
- License: https://creativecommons.org/licenses/by/4.0/
**Pins:**
- A [pin 2]
- K [pin 1]
### D10 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f~jvm.md)
- Package: SOD-323
- Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf
- Manufacturer Name: Diodes Incorporated
- Role Details: Voltage sense clamp diode (placeholder)
- License: https://creativecommons.org/licenses/by/4.0/
- Part Type: Diode
- Manufacturer Part Number: 1N4148WS-7-F
- Role: Clamp
**Pins:**
- A [pin 2]
- K [pin 1]
### D11 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f~jvm.md)
- Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf
- Package: SOD-323
- Role Details: Voltage sense clamp diode (placeholder)
- Manufacturer Name: Diodes Incorporated
- License: https://creativecommons.org/licenses/by/4.0/
- Part Type: Diode
- Role: Clamp
- Manufacturer Part Number: 1N4148WS-7-F
**Pins:**
- A [pin 2]
- K [pin 1]
### D12 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f~jvm.md)
- Manufacturer Part Number: 1N4148WS-7-F
- Part Type: Diode
- License: https://creativecommons.org/licenses/by/4.0/
- Role: Clamp
- Package: SOD-323
- Role Details: Voltage sense clamp diode (placeholder)
- Manufacturer Name: Diodes Incorporated
- Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf
**Pins:**
- A [pin 2]
- K [pin 1]
### D13 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Role Details: D1 flyback: K->5V_RELAY, A->Q9 collector net
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Package: SOD-123FL
- Manufacturer Name: Shandong Jingdao Microelectronics
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
- Role: Flyback
**Pins:**
- A [pin 2]
- K [pin 1]
### D14 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Package: SOD-123FL
- Role Details: D2 flyback: K->5V_RELAY, A->Q10 collector net
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Manufacturer Name: Shandong Jingdao Microelectronics
- Part Type: Diode
- Role: Flyback
- Manufacturer Part Number: 1N4007W
**Pins:**
- A [pin 2]
- K [pin 1]
### D15 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Manufacturer Name: Shandong Jingdao Microelectronics
- Package: SOD-123FL
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
- Role: Flyback
- Role Details: D3 flyback: K->5V_RELAY, A->Q11 collector net
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
**Pins:**
- A [pin 2]
- K [pin 1]
### D16 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Part Type: Diode
- Manufacturer Part Number: 1N4007W
- Manufacturer Name: Shandong Jingdao Microelectronics
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Role: Flyback
- Role Details: D4 flyback: K->5V_RELAY, A->Q12 collector net
- Package: SOD-123FL
**Pins:**
- A [pin 2]
- K [pin 1]
### D17 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Manufacturer Name: Shandong Jingdao Microelectronics
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
- Package: SOD-123FL
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Role Details: D5 flyback: K->5V_RELAY, A->Q13 collector net
- Role: Flyback
**Pins:**
- A [pin 2]
- K [pin 1]
### D18 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Part Type: Diode
- Manufacturer Part Number: 1N4007W
- Manufacturer Name: Shandong Jingdao Microelectronics
- Role Details: D6 flyback: K->5V_RELAY, A->Q14 collector net
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Role: Flyback
- Package: SOD-123FL
**Pins:**
- A [pin 2]
- K [pin 1]
### D19 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
- Package: SOD-123FL
- Role: Flyback
- Manufacturer Name: Shandong Jingdao Microelectronics
- Role Details: D7 flyback: K->5V_RELAY, A->Q15 collector net
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
**Pins:**
- A [pin 2]
- K [pin 1]
### D2 — [1N4007W](https://www.flux.ai/vasy_skral/1n4007w~xpy.md)
- Datasheet URL: https://www.evvosemi.com/Uploads/file/20240515/2024051515581665.pdf
- Part Type: Diode
- Role: Flyback
- Manufacturer Name: Shandong Jingdao Microelectronics
- Role Details: K1 RESET coil flyback; K->5V_RELAY, A->Q10 collector
- License: https://creativecommons.org/licenses/by/4.0/
- Package: SOD-123FL
- Manufacturer Part Number: 1N4007W
**Pins:**
- A [pin 2]
- K [pin 1]
### D20 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Role Details: D8 flyback: K->5V_RELAY, A->Q16 collector net
- Manufacturer Name: Shandong Jingdao Microelectronics
- Role: Flyback
- Part Type: Diode
- Manufacturer Part Number: 1N4007W
- Package: SOD-123FL
**Pins:**
- A [pin 2]
- K [pin 1]
### D21 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Package: SOD-123FL
- Role: Flyback
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
- Role Details: K1 SET coil flyback; K->5V_RELAY, A->Q9 collector/coil low-side
- Manufacturer Name: Shandong Jingdao Microelectronics
**Pins:**
- A [pin 2]
- K [pin 1]
### D22 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Package: SOD-123FL
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Role: Flyback
- Role Details: K1 RESET coil flyback; K->5V_RELAY, A->Q10 collector/coil low-side
- Part Type: Diode
- Manufacturer Part Number: 1N4007W
- Manufacturer Name: Shandong Jingdao Microelectronics
**Pins:**
- A [pin 2]
- K [pin 1]
### D23 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Role Details: K2 SET coil flyback; K->5V_RELAY, A->Q11 collector/coil low-side
- Package: SOD-123FL
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Manufacturer Name: Shandong Jingdao Microelectronics
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
- Role: Flyback
**Pins:**
- A [pin 2]
- K [pin 1]
### D24 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Role Details: K2 RESET coil flyback; K->5V_RELAY, A->Q12 collector/coil low-side
- Package: SOD-123FL
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Manufacturer Name: Shandong Jingdao Microelectronics
- Role: Flyback
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
**Pins:**
- A [pin 2]
- K [pin 1]
### D25 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Role Details: K3 SET coil flyback; K->5V_RELAY, A->Q13 collector/coil low-side
- Role: Flyback
- Package: SOD-123FL
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Manufacturer Name: Shandong Jingdao Microelectronics
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
**Pins:**
- A [pin 2]
- K [pin 1]
### D26 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Role: Flyback
- Manufacturer Part Number: 1N4007W
- Role Details: K3 RESET coil flyback; K->5V_RELAY, A->Q14 collector/coil low-side
- Part Type: Diode
- Manufacturer Name: Shandong Jingdao Microelectronics
- Package: SOD-123FL
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
**Pins:**
- A [pin 2]
- K [pin 1]
### D27 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Package: SOD-123FL
- Manufacturer Name: Shandong Jingdao Microelectronics
- Manufacturer Part Number: 1N4007W
- Role Details: K4 SET coil flyback; K->5V_RELAY, A->Q15 collector/coil low-side
- Part Type: Diode
- Role: Flyback
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
**Pins:**
- A [pin 2]
- K [pin 1]
### D28 — [1N4007W](https://www.flux.ai/jharwinbarrozo/1n4007w~zz.md)
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811031612_Shandong-Jingdao-Microelectronics-1N4007W_C108803.pdf
- Role: Flyback
- Manufacturer Part Number: 1N4007W
- Part Type: Diode
- Package: SOD-123FL
- Manufacturer Name: Shandong Jingdao Microelectronics
- Role Details: K4 RESET coil flyback; K->5V_RELAY, A->Q16 collector/coil low-side
**Pins:**
- A [pin 2]
- K [pin 1]
### D3 — [1N4007W](https://www.flux.ai/vasy_skral/1n4007w~xpy.md)
- Role Details: K2 SET coil flyback; K->5V_RELAY, A->Q11 collector
- Manufacturer Part Number: 1N4007W
- Package: SOD-123FL
- License: https://creativecommons.org/licenses/by/4.0/
- Manufacturer Name: Shandong Jingdao Microelectronics
- Part Type: Diode
- Role: Flyback
- Datasheet URL: https://www.evvosemi.com/Uploads/file/20240515/2024051515581665.pdf
**Pins:**
- A [pin 2]
- K [pin 1]
### D4 — [1N4007W](https://www.flux.ai/vasy_skral/1n4007w~xpy.md)
- Package: SOD-123FL
- Datasheet URL: https://www.evvosemi.com/Uploads/file/20240515/2024051515581665.pdf
- Manufacturer Name: Shandong Jingdao Microelectronics
- Part Type: Diode
- Role Details: K2 RESET coil flyback; K->5V_RELAY, A->Q12 collector
- License: https://creativecommons.org/licenses/by/4.0/
- Role: Flyback
- Manufacturer Part Number: 1N4007W
**Pins:**
- A [pin 2]
- K [pin 1]
### D5 — [1N4007W](https://www.flux.ai/vasy_skral/1n4007w~xpy.md)
- Datasheet URL: https://www.evvosemi.com/Uploads/file/20240515/2024051515581665.pdf
- Manufacturer Name: Shandong Jingdao Microelectronics
- Package: SOD-123FL
- Part Type: Diode
- License: https://creativecommons.org/licenses/by/4.0/
- Role Details: K3 SET coil flyback; K->5V_RELAY, A->Q13 collector
- Manufacturer Part Number: 1N4007W
- Role: Flyback
**Pins:**
- A [pin 2]
- K [pin 1]
### D6 — [1N4007W](https://www.flux.ai/vasy_skral/1n4007w~xpy.md)
- Datasheet URL: https://www.evvosemi.com/Uploads/file/20240515/2024051515581665.pdf
- Role Details: K3 RESET coil flyback; K->5V_RELAY, A->Q14 collector
- Part Type: Diode
- Package: SOD-123FL
- Manufacturer Name: Shandong Jingdao Microelectronics
- License: https://creativecommons.org/licenses/by/4.0/
- Manufacturer Part Number: 1N4007W
- Role: Flyback
**Pins:**
- A [pin 2]
- K [pin 1]
### D7 — [1N4007W](https://www.flux.ai/vasy_skral/1n4007w~xpy.md)
- Datasheet URL: https://www.evvosemi.com/Uploads/file/20240515/2024051515581665.pdf
- Role Details: K4 SET coil flyback; K->5V_RELAY, A->Q15 collector
- Role: Flyback
- Part Type: Diode
- Manufacturer Name: Shandong Jingdao Microelectronics
- License: https://creativecommons.org/licenses/by/4.0/
- Manufacturer Part Number: 1N4007W
- Package: SOD-123FL
**Pins:**
- A [pin 2]
- K [pin 1]
### D8 — [1N4007W](https://www.flux.ai/vasy_skral/1n4007w~xpy.md)
- License: https://creativecommons.org/licenses/by/4.0/
- Package: SOD-123FL
- Role: Flyback
- Manufacturer Part Number: 1N4007W
- Datasheet URL: https://www.evvosemi.com/Uploads/file/20240515/2024051515581665.pdf
- Manufacturer Name: Shandong Jingdao Microelectronics
- Part Type: Diode
- Role Details: K4 RESET coil flyback; K->5V_RELAY, A->Q16 collector
**Pins:**
- A [pin 2]
- K [pin 1]
### D9 — [1N4148WS-7-F](https://www.flux.ai/adrian95/1n4148ws-7-f~jvm.md)
- Package: SOD-323
- Datasheet URL: https://www.diodes.com/assets/Datasheets/1N4148WS_BAV16WS.pdf
- Manufacturer Name: Diodes Incorporated
- License: https://creativecommons.org/licenses/by/4.0/
- Part Type: Diode
- Role Details: Optional diode across buzzer if inductive
- Role: Flyback
- Manufacturer Part Number: 1N4148WS-7-F
**Pins:**
- A [pin 2]
- K [pin 1]
### IC1 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1-n16r8~fs1.md)
- License: https://creativecommons.org/licenses/by/4.0/
- Manufacturer Name: Espressif Systems
- Part Type: Module
- Role: MCU Module
- Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_wroom_1_wroom_1u_datasheet_en-2930317.pdf
- Package: Surface Mount
- Role Details: ESP32-S3 controller powered only from 3V3_MAIN
- Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8
**Pins:**
- 3V3 [pin 2]
- EN [pin 3]
- GND_1 [pin 1]
- GND_10 [pin 48]
- GND_11 [pin 49]
- GND_2 [pin 40]
- GND_3 [pin 41]
- GND_4 [pin 42]
- GND_5 [pin 43]
- GND_6 [pin 44]
- GND_7 [pin 45]
- GND_8 [pin 46]
- GND_9 [pin 47]
- IO0 [pin 27]
- IO1 [pin 39]
- IO10 [pin 18]
- IO11 [pin 19]
- IO12 [pin 20]
- IO13 [pin 21]
- IO14 [pin 22]
- IO15 [pin 8]
- IO16 [pin 9]
- IO17 [pin 10]
- IO18 [pin 11]
- IO19 [pin 13]
- IO2 [pin 38]
- IO20 [pin 14]
- IO21 [pin 23]
- IO3 [pin 15]
- IO35 [pin 28]
- IO36 [pin 29]
- IO37 [pin 30]
- IO38 [pin 31]
- IO39 [pin 32]
- IO4 [pin 4]
- IO40 [pin 33]
- IO41 [pin 34]
- IO42 [pin 35]
- IO45 [pin 26]
- IO46 [pin 16]
- IO47 [pin 24]
- IO48 [pin 25]
- IO5 [pin 5]
- IO6 [pin 6]
- IO7 [pin 7]
- IO8 [pin 12]
- IO9 [pin 17]
- RXD0 [pin 36]
- TXD0 [pin 37]
### IC2 — [LAN8720AI-CP](https://www.flux.ai/adrian95/lan8720ai-cp~wgq.md)
- Manufacturer Part Number: LAN8720AI-CP
- License: https://creativecommons.org/licenses/by/4.0/
- Part Type: Integrated Circuit
- Datasheet URL: https://octopart.com/datasheet/lan8720ai-cp-microchip-24995094
- Manufacturer Name: Microchip Technology
- Role Details: LAN8720 RMII PHY, REF_CLK input from GPIO0
- Package: QFN-24
- Role: Ethernet PHY
**Pins:**
- CRS_DV/~MODE2 [pin 11]
- EP [pin 25]
- LED1/~REGOFF [pin 3]
- LED2/~NINTSEL [pin 2]
- MDC [pin 13]
- MDIO [pin 12]
- NINT/REFCLKO [pin 14]
- NRST [pin 15]
- RBIAS [pin 24]
- RXD0/~MODE0 [pin 8]
- RXD1/~MODE1 [pin 7]
- RXER/~PHYAD0 [pin 10]
- RXN [pin 22]
- RXP [pin 23]
- TXD0 [pin 17]
- TXD1 [pin 18]
- TXEN [pin 16]
- TXN [pin 20]
- TXP [pin 21]
- VDD1A [pin 19]
- VDD2A [pin 1]
- VDDCR [pin 6]
- VDDIO [pin 9]
- XTAL1/CLKIN [pin 5]
- XTAL2 [pin 4]
### J1 — [SI-60062-F](https://www.flux.ai/vasy_skral/si-60062-f~gu.md)
- Role: Ethernet Connector
- Package: Through Hole
- License: https://creativecommons.org/licenses/by/4.0/
- Manufacturer Name: BelFuse
- Part Type: Connector
- Datasheet URL: https://datasheet.datasheetarchive.com/originals/distributors/Datasheets-DGA2/203658.pdf
- Symbol Style: Parametric
- Role Details: RJ45 MagJack for 10/100 Ethernet connection
- Manufacturer Part Number: SI-60062-F
**Pins:**
- 10 [pin 10]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]
- GRN_- [pin 14]
- GRN_+ [pin 13]
- RCT [pin 5]
- RD- [pin 6]
- RD+ [pin 4]
- TCT [pin 2]
- TD- [pin 3]
- TD+ [pin 1]
- YEL_- [pin 12]
- YEL_+ [pin 11]
### J10 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Connector Type: Terminal Blocks
- Role: Connector
- Manufacturer Part Number: WJ500V-5.08-2P
- Package: Through Hole
- Role Details: Socket live terminal block (Socket_L)
- Part Type: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J11 — [Pin Header 01x04 2.54mm Vertical without Designators](https://www.flux.ai/markwuflux/pin-header-01x04-2p54mm-vertical-without-designators~qb.md)
- License: https://creativecommons.org/licenses/by/4.0/
- Part Type: Connector
- Role: Connector
- Role Details: Power connector (4-pin): Pin1/2 +5V, Pin3/4 GND
- Package: Through Hole
**Pins:**
- Pin_1 [pin 1]
- Pin_2 [pin 1]
- Pin_3 [pin 3]
- Pin_4 [pin 4]
### J13 — [AVR-ISP-6 with text](https://www.flux.ai/vasy_skral/avr-isp-6-with-text~i0o.md)
- Package: Through Hole
- Part Type: Connector
- Manufacturer Name: Würth Elektronik
- Role Details: Relay connector (6-pin): RELAY1-4 + power/ground
- Datasheet URL: https://www.we-online.com/catalog/datasheet/61200621621.pdf
- Exclude from BOM: false
- Role: Connector
- Manufacturer Part Number: 61200621621
**Pins:**
- Pin_1 [pin 1]
- Pin_2 [pin 2]
- Pin_3 [pin 3]
- Pin_4 [pin 4]
- Pin_5 [pin 5]
- Pin_6 [pin 6]
### J15 — [Pin Header 01x04 2.54mm Vertical without Designators](https://www.flux.ai/markwuflux/pin-header-01x04-2p54mm-vertical-without-designators~qb.md)
- Role Details: Power connector (4-pin): 2x supply, 2x ground
- Role: Connector
- Part Type: Connector
- Package: Through Hole
- License: https://creativecommons.org/licenses/by/4.0/
**Pins:**
- Pin_1 [pin 1]
- Pin_2 [pin 1]
- Pin_3 [pin 3]
- Pin_4 [pin 4]
### J16 — [AVR-JTAG-10 with text](https://www.flux.ai/vasy_skral/avr-jtag-10-with-text~qiy.md)
- Package: Through Hole
- Datasheet URL: https://www.we-online.com/catalog/datasheet/61201021621.pdf
- Role Details: Meter interface connector (10-pin): SPI bus + 4 CS + power/ground
- Role: Connector
- Manufacturer Name: Würth Elektronik
- Manufacturer Part Number: 61201021621
- Part Type: Connector
**Pins:**
- GND [pin 2]
- GND [pin 10]
- nSRST [pin 6]
- nTRST [pin 8]
- TCK [pin 1]
- TDI [pin 9]
- TDO [pin 3]
- TMS [pin 5]
- VCC [pin 7]
- VREF [pin 4]
### J17 — [AVR-ISP-6 with text](https://www.flux.ai/vasy_skral/avr-isp-6-with-text~i0o.md)
- Exclude from BOM: false
- Package: Through Hole
- Datasheet URL: https://www.we-online.com/catalog/datasheet/61200621621.pdf
- Manufacturer Part Number: 61200621621
- Role Details: Relay interface connector (6-pin): 4 relay signals + power/ground
- Role: Connector
- Manufacturer Name: Würth Elektronik
- Part Type: Connector
**Pins:**
- Pin_1 [pin 1]
- Pin_2 [pin 2]
- Pin_3 [pin 3]
- Pin_4 [pin 4]
- Pin_5 [pin 5]
- Pin_6 [pin 6]
### J19 — [AVR-JTAG-10 with text](https://www.flux.ai/vasy_skral/avr-jtag-10-with-text~qiy.md)
- Role: Connector
- Role Details: Meter connector (10-pin): SPI bus + 4 CS + power/ground
- Datasheet URL: https://www.we-online.com/catalog/datasheet/61201021621.pdf
- Manufacturer Part Number: 61201021621
- Manufacturer Name: Würth Elektronik
- Package: Through Hole
- Part Type: Connector
**Pins:**
- GND [pin 2]
- GND [pin 10]
- nSRST [pin 6]
- nTRST [pin 8]
- TCK [pin 1]
- TDI [pin 9]
- TDO [pin 3]
- TMS [pin 5]
- VCC [pin 7]
- VREF [pin 4]
### J2 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Connector Type: Terminal Blocks
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Role: Connector
- Part Type: Connector
- Role Details: AC input terminal block for AC_L_IN and AC_N_IN
- Package: Through Hole
- Manufacturer Part Number: WJ500V-5.08-2P
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J23 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Role: Relay Placeholder
- Package: Through Hole
- Part Type: Connector
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Role Details: 2-pin placeholder representing relay COM and NO contacts for live-only switching
- Connector Type: Terminal Blocks
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J24 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Name: Ningbo Kangnex
- Role: Relay Placeholder
- Role Details: 2-pin placeholder representing relay COM and NO contacts for live-only switching
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
- Package: Through Hole
- Part Type: Connector
- Manufacturer Part Number: WJ500V-5.08-2P
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J25 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Role Details: 2-pin placeholder representing relay COM and NO contacts for live-only switching
- Role: Relay Placeholder
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Connector Type: Terminal Blocks
- Manufacturer Part Number: WJ500V-5.08-2P
- Package: Through Hole
- Part Type: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J26 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Package: Through Hole
- Part Type: Connector
- Role: Relay Placeholder
- Manufacturer Part Number: WJ500V-5.08-2P
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Connector Type: Terminal Blocks
- Role Details: 2-pin placeholder representing relay COM and NO contacts for live-only switching
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J27 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Role: Relay Coil Connector
- Manufacturer Part Number: WJ500V-5.08-2P
- Part Type: Connector
- Package: Through Hole
- Role Details: J15 coil terminals; Pin2=5V_RELAY, Pin1=Q9_COLLECTOR (K1 SET low-side)
- Connector Type: Terminal Blocks
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J28 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Part Type: Connector
- Package: Through Hole
- Role Details: J16 coil terminals; Pin2=5V_RELAY, Pin1=Q10_COLLECTOR (K1 RESET low-side)
- Role: Relay Coil Connector
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Connector Type: Terminal Blocks
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J29 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Part Type: Connector
- Role Details: J17 coil terminals; Pin2=5V_RELAY, Pin1=Q11_COLLECTOR (K2 SET low-side)
- Role: Relay Coil Connector
- Package: Through Hole
- Connector Type: Terminal Blocks
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J3 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Role: Connector
- Part Type: Connector
- Role Details: Socket neutral terminal block (Socket_N)
- Package: Through Hole
- Connector Type: Terminal Blocks
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J30 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Part Type: Connector
- Role: Relay Coil Connector
- Manufacturer Part Number: WJ500V-5.08-2P
- Role Details: J18 coil terminals; Pin2=5V_RELAY, Pin1=Q12_COLLECTOR (K2 RESET low-side)
- Package: Through Hole
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
- Role: Relay Coil Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J31 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Connector Type: Terminal Blocks
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Manufacturer Part Number: WJ500V-5.08-2P
- Role: Relay Coil Connector
- Package: Through Hole
- Part Type: Connector
- Role Details: J19 coil terminals; Pin2=5V_RELAY, Pin1=Q13_COLLECTOR (K3 SET low-side)
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J32 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Part Type: Connector
- Role: Relay Coil Connector
- Role Details: J20 coil terminals; Pin2=5V_RELAY, Pin1=Q14_COLLECTOR (K3 RESET low-side)
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Package: Through Hole
- Manufacturer Name: Ningbo Kangnex
- Connector Type: Terminal Blocks
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J33 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
- Role Details: J21 coil terminals; Pin2=5V_RELAY, Pin1=Q15_COLLECTOR (K4 SET low-side)
- Part Type: Connector
- Package: Through Hole
- Role: Relay Coil Connector
- Manufacturer Part Number: WJ500V-5.08-2P
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J34 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Package: Through Hole
- Part Type: Connector
- Manufacturer Name: Ningbo Kangnex
- Role Details: J22 coil terminals; Pin2=5V_RELAY, Pin1=Q16_COLLECTOR (K4 RESET low-side)
- Role: Relay Coil Connector
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J35 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Role Details: Coil connector for Q9 collector; Pin2=5V_RELAY, Pin1=K1_SET/RESET low-side
- Part Type: Connector
- Role: Relay Coil Connector
- Package: Through Hole
- Connector Type: Terminal Blocks
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J36 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Role: Relay Coil Connector
- Connector Type: Terminal Blocks
- Manufacturer Part Number: WJ500V-5.08-2P
- Package: Through Hole
- Role Details: Coil connector for Q10 collector; Pin2=5V_RELAY, Pin1=K1_RESET low-side
- Part Type: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J37 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Role Details: Coil connector for Q11 collector; Pin2=5V_RELAY, Pin1=K2_SET low-side
- Manufacturer Part Number: WJ500V-5.08-2P
- Part Type: Connector
- Role: Relay Coil Connector
- Connector Type: Terminal Blocks
- Manufacturer Name: Ningbo Kangnex
- Package: Through Hole
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J38 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Package: Through Hole
- Manufacturer Name: Ningbo Kangnex
- Role Details: Coil connector for Q12 collector; Pin2=5V_RELAY, Pin1=K2_RESET low-side
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
- Role: Relay Coil Connector
- Manufacturer Part Number: WJ500V-5.08-2P
- Part Type: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J39 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Package: Through Hole
- Role: Relay Coil Connector
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
- Manufacturer Part Number: WJ500V-5.08-2P
- Role Details: Coil connector for Q13 collector; Pin2=5V_RELAY, Pin1=K3_SET low-side
- Part Type: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J4 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Role: Connector
- Role Details: Socket neutral terminal block (Socket_N)
- Part Type: Connector
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
- Package: Through Hole
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J40 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Role: Relay Coil Connector
- Connector Type: Terminal Blocks
- Manufacturer Part Number: WJ500V-5.08-2P
- Role Details: Coil connector for Q14 collector; Pin2=5V_RELAY, Pin1=K3_RESET low-side
- Package: Through Hole
- Part Type: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J41 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Part Type: Connector
- Role: Relay Coil Connector
- Manufacturer Part Number: WJ500V-5.08-2P
- Package: Through Hole
- Connector Type: Terminal Blocks
- Role Details: Coil connector for Q15 collector; Pin2=5V_RELAY, Pin1=K4_SET low-side
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J42 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Connector Type: Terminal Blocks
- Role: Relay Coil Connector
- Package: Through Hole
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Role Details: Coil connector for Q16 collector; Pin2=5V_RELAY, Pin1=K4_RESET low-side
- Part Type: Connector
- Manufacturer Part Number: WJ500V-5.08-2P
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J43 — [282837-4](https://www.flux.ai/adrian95/282837-4~o7p.md)
- Manufacturer Part Number: 282837-4
- Part Type: Connector
- Package: Through Hole
- Role: Connector
- Role Details: Power Interface: Pin1=+5V, Pin2=+5V, Pin3=GND, Pin4=GND
- License: https://creativecommons.org/licenses/by/4.0/
- Manufacturer Name: TE Connectivity AMP Connectors
- Datasheet URL: https://www.te.com/usa-en/product-282837-4.datasheet.pdf
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
### J44 — [KF2EDGR-5.08-10P](https://www.flux.ai/lcsc/kf2edgr-5p08-10p~muws.md)
- LCSC Part Number: C441201
- Package: Through Hole
- Package or Case Code: CONN-TH_10P-P5.08_KF2EDGR-5.08-10P
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: KF2EDGR-5.08-10P
- Role Details: Meter Interface: Pin1=SPI_MOSI, Pin2=SPI_MISO, Pin3=SPI_SCLK, Pin4=SPI_CS_U1, Pin5=SPI_CS_U2, Pin6=SPI_CS_U3, Pin7=SPI_CS_U4, Pin8=+5V, Pin9=GND, Pin10=GND
- Part Type: Pluggable System Terminal Block
- Product Info Url: https://lcsc.com/product-detail/Pluggable-System-Terminal-Block_Cixi-Kefa-Elec-KF2EDGR-5-08-10P_C441201.html
- Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2303311930_Cixi-Kefa-Elec-KF2EDGR-5-08-10P_C441201.pdf
- Manufacturer Name: KEFA(科发)
- Role: Connector
**Pins:**
- 1 [pin 1]
- 10 [pin 10]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
- 7 [pin 7]
- 8 [pin 8]
- 9 [pin 9]
### J45 — [WJ2EDGRM-5.08-6P](https://www.flux.ai/lcsc/wj2edgrm-5p08-6p~8nyb.md)
- LCSC Part Number: C508919
- Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Ningbo-Kangnex-Elec-WJ2EDGRM-5-08-6P_C508919.pdf
- Role Details: Relay Interface: Pin1=RELAY1, Pin2=RELAY2, Pin3=RELAY3, Pin4=RELAY4, Pin5=+5V, Pin6=GND
- Role: Connector
- Product Info Url: https://lcsc.com/product-detail/Pluggable-System-Terminal-Block_Ningbo-Kangnex-Elec-WJ2EDGRM-5-08-6P_C508919.html
- Package or Case Code: CONN-TH_WJ2EDGRM-5.08-6P
- Manufacturer Name: KANGNEX(康奈克斯电气)
- Manufacturer Part Number: WJ2EDGRM-5.08-6P
- JLCPCB Part Class: Extended Part
- Part Type: Pluggable System Terminal Block
- Package: Through Hole
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]
- 6 [pin 6]
### J46 — [AVR-JTAG-10 with text](https://www.flux.ai/vasy_skral/avr-jtag-10-with-text~qiy.md)
- Part Type: Connector
- Package: Through Hole
- Manufacturer Part Number: 61201021621
- Manufacturer Name: Würth Elektronik
- Role: Connector
- Datasheet URL: https://www.we-online.com/catalog/datasheet/61201021621.pdf
- Role Details: Meter connector (10-pin): SPI bus + 4 CS + power/ground
**Pins:**
- GND [pin 2]
- GND [pin 10]
- nSRST [pin 6]
- nTRST [pin 8]
- TCK [pin 1]
- TDI [pin 9]
- TDO [pin 3]
- TMS [pin 5]
- VCC [pin 7]
- VREF [pin 4]
### J46 — [AVR-JTAG-10 with text](https://www.flux.ai/vasy_skral/avr-jtag-10-with-text~qiy.md)
- Manufacturer Part Number: 61201021621
- Manufacturer Name: Würth Elektronik
- Role: Connector
- Part Type: Connector
- Role Details: Meter interface connector (10-pin): SPI bus + 4 CS + power/ground
- Package: Through Hole
- Datasheet URL: https://www.we-online.com/catalog/datasheet/61201021621.pdf
**Pins:**
- GND [pin 2]
- GND [pin 10]
- nSRST [pin 6]
- nTRST [pin 8]
- TCK [pin 1]
- TDI [pin 9]
- TDO [pin 3]
- TMS [pin 5]
- VCC [pin 7]
- VREF [pin 4]
### J46 — [282847-3](https://www.flux.ai/jecstronic/282847-3~8fd.md)
- Package: Through Hole
- Role: Connector
- License: https://creativecommons.org/licenses/by/4.0/
- Role Details: Socket earth terminal block (Socket_E)
- Part Type: Connector
- Manufacturer Part Number: 282847-3
- Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282847&DocType=Customer+Drawing&DocLang=English
- Manufacturer Name: TE Connectivity AMP Connectors
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
### J47 — [Pin Header 01x04 2.54mm Vertical without Designators](https://www.flux.ai/markwuflux/pin-header-01x04-2p54mm-vertical-without-designators~qb.md)
- Part Type: Connector
- License: https://creativecommons.org/licenses/by/4.0/
- Role: Connector
- Role Details: Power connector (4-pin): 2x supply, 2x ground
- Package: Through Hole
**Pins:**
- Pin_1 [pin 1]
- Pin_2 [pin 1]
- Pin_3 [pin 3]
- Pin_4 [pin 4]
### J47 — [282847-3](https://www.flux.ai/jecstronic/282847-3~8fd.md)
- Manufacturer Name: TE Connectivity AMP Connectors
- Package: Through Hole
- Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282847&DocType=Customer+Drawing&DocLang=English
- Manufacturer Part Number: 282847-3
- Part Type: Connector
- Role: Connector
- License: https://creativecommons.org/licenses/by/4.0/
- Role Details: Socket earth terminal block (Socket_E)
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
### J48 — [282847-3](https://www.flux.ai/jecstronic/282847-3~8fd.md)
- License: https://creativecommons.org/licenses/by/4.0/
- Package: Through Hole
- Manufacturer Part Number: 282847-3
- Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282847&DocType=Customer+Drawing&DocLang=English
- Part Type: Connector
- Manufacturer Name: TE Connectivity AMP Connectors
- Role Details: Socket earth terminal block (Socket_E)
- Role: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
### J48 — [AVR-ISP-6 with text](https://www.flux.ai/vasy_skral/avr-isp-6-with-text~i0o.md)
- Role Details: Relay interface connector (6-pin): 4 relay signals + power/ground
- Manufacturer Part Number: 61200621621
- Exclude from BOM: false
- Datasheet URL: https://www.we-online.com/catalog/datasheet/61200621621.pdf
- Manufacturer Name: Würth Elektronik
- Part Type: Connector
- Role: Connector
- Package: Through Hole
**Pins:**
- Pin_1 [pin 1]
- Pin_2 [pin 2]
- Pin_3 [pin 3]
- Pin_4 [pin 4]
- Pin_5 [pin 5]
- Pin_6 [pin 6]
### J5 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Part Type: Connector
- Role Details: Socket neutral terminal block (Socket_N)
- Manufacturer Part Number: WJ500V-5.08-2P
- Package: Through Hole
- Connector Type: Terminal Blocks
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Manufacturer Name: Ningbo Kangnex
- Role: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J6 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Role: Connector
- Part Type: Connector
- Manufacturer Name: Ningbo Kangnex
- Package: Through Hole
- Role Details: Socket neutral terminal block (Socket_N)
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J7 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Connector Type: Terminal Blocks
- Role Details: Socket live terminal block (Socket_L)
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Package: Through Hole
- Role: Connector
- Manufacturer Part Number: WJ500V-5.08-2P
- Part Type: Connector
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J8 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Role: Connector
- Connector Type: Terminal Blocks
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Role Details: Socket live terminal block (Socket_L)
- Manufacturer Part Number: WJ500V-5.08-2P
- Part Type: Connector
- Package: Through Hole
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### J9 — [WJ500V-5.08-2P](https://www.flux.ai/adrian95/wj500v-5p08-2p~xy7.md)
- Manufacturer Part Number: WJ500V-5.08-2P
- Package: Through Hole
- Part Type: Connector
- Role: Connector
- Manufacturer Name: Ningbo Kangnex
- Datasheet URL: https://datasheet.lcsc.com/szlcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf
- Connector Type: Terminal Blocks
- Role Details: Socket live terminal block (Socket_L)
**Pins:**
- 1 [pin 1]
- 2 [pin 2]
### PS1 — [HLK-10M05](https://www.flux.ai/iiakilii/hlk-10m05~sj.md)
- Role: SMPS
- Role Details: 230 VAC to 5 V isolated supply for 5V_MAIN
- Package: Through Hole
- Manufacturer Part Number: HLK-10M05
**Pins:**
- -V0 [pin 3]
- +V0 [pin 4]
- AC_1 [pin 1]
- AC_2 [pin 2]
### Q1 — [PC817C](https://www.flux.ai/vasyl/pc817c~08t.md)
- License: https://creativecommons.org/licenses/by/4.0/
- Manufacturer Name: Taiwan Semiconductor Corporation
- Package: DIP-4
- Datasheet URL: https://www.taiwansemi.com/assets/uploads/datasheet/TPC817%20SERIES_C1612.pdf
- Role Details: Optocoupler for relay coil driver channel
- Manufacturer Part Number: PC817C
- Role: Isolation
- Part Type: Integrated Circuit
**Pins:**
- ~ [pin 1]
- ~ [pin 2]
- ~ [pin 3]
- ~ [pin 4]
### Q10 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Part Type: Transistor
- Manufacturer Name: ST SEMTECH
- Manufacturer Part Number: BC817-40
- Package: SOT-23-3
- Role Details: Low-side NPN driver for relay coil channel
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
- Role: Driver
**Pins:**
- B
- C
- E
### Q11 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
- Role: Driver
- Role Details: Low-side NPN driver for relay coil channel
- Package: SOT-23-3
- Part Type: Transistor
- Manufacturer Part Number: BC817-40
- Manufacturer Name: ST SEMTECH
**Pins:**
- B
- C
- E
### Q12 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Manufacturer Name: ST SEMTECH
- Manufacturer Part Number: BC817-40
- Role Details: Low-side NPN driver for relay coil channel
- Part Type: Transistor
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
- Package: SOT-23-3
- Role: Driver
**Pins:**
- B
- C
- E
### Q13 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Part Type: Transistor
- Role: Driver
- Manufacturer Name: ST SEMTECH
- Manufacturer Part Number: BC817-40
- Package: SOT-23-3
- Role Details: Low-side NPN driver for relay coil channel
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
**Pins:**
- B
- C
- E
### Q14 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Role: Driver
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
- Role Details: Low-side NPN driver for relay coil channel
- Manufacturer Name: ST SEMTECH
- Manufacturer Part Number: BC817-40
- Package: SOT-23-3
- Part Type: Transistor
**Pins:**
- B
- C
- E
### Q15 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Role: Driver
- Role Details: Low-side NPN driver for relay coil channel
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
- Part Type: Transistor
- Manufacturer Part Number: BC817-40
- Manufacturer Name: ST SEMTECH
- Package: SOT-23-3
**Pins:**
- B
- C
- E
### Q16 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Manufacturer Name: ST SEMTECH
- Manufacturer Part Number: BC817-40
- Part Type: Transistor
- Role: Driver
- Role Details: Low-side NPN driver for relay coil channel
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
- Package: SOT-23-3
**Pins:**
- B
- C
- E
### Q17 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Part Type: Transistor
- Role: Driver
- Manufacturer Name: ST SEMTECH
- Manufacturer Part Number: BC817-40
- Role Details: Low-side NPN driver for buzzer
- Package: SOT-23-3
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
**Pins:**
- B
- C
- E
### Q2 — [PC817C](https://www.flux.ai/vasyl/pc817c~08t.md)
- Role Details: Optocoupler for relay coil driver channel
- Package: DIP-4
- License: https://creativecommons.org/licenses/by/4.0/
- Manufacturer Name: Taiwan Semiconductor Corporation
- Role: Isolation
- Manufacturer Part Number: PC817C
- Datasheet URL: https://www.taiwansemi.com/assets/uploads/datasheet/TPC817%20SERIES_C1612.pdf
- Part Type: Integrated Circuit
**Pins:**
- ~ [pin 1]
- ~ [pin 2]
- ~ [pin 3]
- ~ [pin 4]
### Q3 — [PC817C](https://www.flux.ai/vasyl/pc817c~08t.md)
- Part Type: Integrated Circuit
- Datasheet URL: https://www.taiwansemi.com/assets/uploads/datasheet/TPC817%20SERIES_C1612.pdf
- Role: Isolation
- Manufacturer Part Number: PC817C
- Role Details: Optocoupler for relay coil driver channel
- Manufacturer Name: Taiwan Semiconductor Corporation
- Package: DIP-4
- License: https://creativecommons.org/licenses/by/4.0/
**Pins:**
- ~ [pin 1]
- ~ [pin 2]
- ~ [pin 3]
- ~ [pin 4]
### Q4 — [PC817C](https://www.flux.ai/vasyl/pc817c~08t.md)
- Manufacturer Name: Taiwan Semiconductor Corporation
- Role: Isolation
- Part Type: Integrated Circuit
- Role Details: Optocoupler for relay coil driver channel
- Manufacturer Part Number: PC817C
- Datasheet URL: https://www.taiwansemi.com/assets/uploads/datasheet/TPC817%20SERIES_C1612.pdf
- Package: DIP-4
- License: https://creativecommons.org/licenses/by/4.0/
**Pins:**
- ~ [pin 1]
- ~ [pin 2]
- ~ [pin 3]
- ~ [pin 4]
### Q5 — [PC817C](https://www.flux.ai/vasyl/pc817c~08t.md)
- Part Type: Integrated Circuit
- Role: Isolation
- Manufacturer Part Number: PC817C
- Datasheet URL: https://www.taiwansemi.com/assets/uploads/datasheet/TPC817%20SERIES_C1612.pdf
- Role Details: Optocoupler for relay coil driver channel
- Manufacturer Name: Taiwan Semiconductor Corporation
- License: https://creativecommons.org/licenses/by/4.0/
- Package: DIP-4
**Pins:**
- ~ [pin 1]
- ~ [pin 2]
- ~ [pin 3]
- ~ [pin 4]
### Q6 — [PC817C](https://www.flux.ai/vasyl/pc817c~08t.md)
- Package: DIP-4
- Manufacturer Name: Taiwan Semiconductor Corporation
- Part Type: Integrated Circuit
- Role Details: Optocoupler for relay coil driver channel
- Manufacturer Part Number: PC817C
- Datasheet URL: https://www.taiwansemi.com/assets/uploads/datasheet/TPC817%20SERIES_C1612.pdf
- Role: Isolation
- License: https://creativecommons.org/licenses/by/4.0/
**Pins:**
- ~ [pin 1]
- ~ [pin 2]
- ~ [pin 3]
- ~ [pin 4]
### Q7 — [PC817C](https://www.flux.ai/vasyl/pc817c~08t.md)
- Role Details: Optocoupler for relay coil driver channel
- License: https://creativecommons.org/licenses/by/4.0/
- Datasheet URL: https://www.taiwansemi.com/assets/uploads/datasheet/TPC817%20SERIES_C1612.pdf
- Package: DIP-4
- Manufacturer Part Number: PC817C
- Part Type: Integrated Circuit
- Role: Isolation
- Manufacturer Name: Taiwan Semiconductor Corporation
**Pins:**
- ~ [pin 1]
- ~ [pin 2]
- ~ [pin 3]
- ~ [pin 4]
### Q8 — [PC817C](https://www.flux.ai/vasyl/pc817c~08t.md)
- Part Type: Integrated Circuit
- Role Details: Optocoupler for relay coil driver channel
- Datasheet URL: https://www.taiwansemi.com/assets/uploads/datasheet/TPC817%20SERIES_C1612.pdf
- Manufacturer Part Number: PC817C
- Package: DIP-4
- Manufacturer Name: Taiwan Semiconductor Corporation
- License: https://creativecommons.org/licenses/by/4.0/
- Role: Isolation
**Pins:**
- ~ [pin 1]
- ~ [pin 2]
- ~ [pin 3]
- ~ [pin 4]
### Q9 — [BC817-40](https://www.flux.ai/jharwinbarrozo/bc817-40~09.md)
- Package: SOT-23-3
- Datasheet URL: https://datasheet.lcsc.com/lcsc/1811061725_ST-Semtech-BC817-40_C85078.pdf
- Role: Driver
- Manufacturer Name: ST SEMTECH
- Manufacturer Part Number: BC817-40
- Part Type: Transistor
- Role Details: Low-side NPN driver for relay coil channel
**Pins:**
- B
- C
- E
### U1 — [ATM90E26-YU-B](https://www.flux.ai/jecstronic/atm90e26-yu-b~op5.md)
- Part Type: Power Management
- Manufacturer Name: Microchip Technology
- Manufacturer Part Number: ATM90E26-YU-B
- Package: SSOP-28
- Role: Energy Meter
- Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-46002-SE-M90E26-Datasheet.pdf
- Role Details: ATM90E26 on shared SPI bus with dedicated chip select
- License: https://creativecommons.org/licenses/by/4.0/
**Pins:**
- ~CS [pin 24]
- ~RESET [pin 4]
- AGND_1 [pin 6]
- AGND_2 [pin 14]
- AVDD [pin 5]
- CF1 [pin 18]
- CF2 [pin 19]
- DGND [pin 2]
- DVDD [pin 3]
- I1N [pin 11]
- I1P [pin 10]
- I2N [pin 8]
- I2P [pin 7]
- IRQ [pin 20]
- MMD0 [pin 28]
- MMD1 [pin 1]
- OSCI [pin 22]
- OSCO [pin 23]
- RESV_LOW [pin 9]
- SCLK [pin 25]
- SDI/URX [pin 27]
- SDO/UTX [pin 26]
- USEL [pin 12]
- VN [pin 15]
- VP [pin 16]
- VREF [pin 13]
- WARNOUT [pin 17]
- ZX [pin 21]
### U2 — [ATM90E26-YU-B](https://www.flux.ai/jecstronic/atm90e26-yu-b~op5.md)
- License: https://creativecommons.org/licenses/by/4.0/
- Role: Energy Meter
- Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-46002-SE-M90E26-Datasheet.pdf
- Package: SSOP-28
- Manufacturer Name: Microchip Technology
- Part Type: Power Management
- Manufacturer Part Number: ATM90E26-YU-B
- Role Details: ATM90E26 on shared SPI bus with dedicated chip select
**Pins:**
- ~CS [pin 24]
- ~RESET [pin 4]
- AGND_1 [pin 6]
- AGND_2 [pin 14]
- AVDD [pin 5]
- CF1 [pin 18]
- CF2 [pin 19]
- DGND [pin 2]
- DVDD [pin 3]
- I1N [pin 11]
- I1P [pin 10]
- I2N [pin 8]
- I2P [pin 7]
- IRQ [pin 20]
- MMD0 [pin 28]
- MMD1 [pin 1]
- OSCI [pin 22]
- OSCO [pin 23]
- RESV_LOW [pin 9]
- SCLK [pin 25]
- SDI/URX [pin 27]
- SDO/UTX [pin 26]
- USEL [pin 12]
- VN [pin 15]
- VP [pin 16]
- VREF [pin 13]
- WARNOUT [pin 17]
- ZX [pin 21]
### U3 — [ATM90E26-YU-B](https://www.flux.ai/jecstronic/atm90e26-yu-b~op5.md)
- Package: SSOP-28
- Role Details: ATM90E26 on shared SPI bus with dedicated chip select
- Part Type: Power Management
- Manufacturer Name: Microchip Technology
- Manufacturer Part Number: ATM90E26-YU-B
- License: https://creativecommons.org/licenses/by/4.0/
- Role: Energy Meter
- Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-46002-SE-M90E26-Datasheet.pdf
**Pins:**
- ~CS [pin 24]
- ~RESET [pin 4]
- AGND_1 [pin 6]
- AGND_2 [pin 14]
- AVDD [pin 5]
- CF1 [pin 18]
- CF2 [pin 19]
- DGND [pin 2]
- DVDD [pin 3]
- I1N [pin 11]
- I1P [pin 10]
- I2N [pin 8]
- I2P [pin 7]
- IRQ [pin 20]
- MMD0 [pin 28]
- MMD1 [pin 1]
- OSCI [pin 22]
- OSCO [pin 23]
- RESV_LOW [pin 9]
- SCLK [pin 25]
- SDI/URX [pin 27]
- SDO/UTX [pin 26]
- USEL [pin 12]
- VN [pin 15]
- VP [pin 16]
- VREF [pin 13]
- WARNOUT [pin 17]
- ZX [pin 21]
### U4 — [ATM90E26-YU-B](https://www.flux.ai/jecstronic/atm90e26-yu-b~op5.md)
- Manufacturer Name: Microchip Technology
- Part Type: Power Management
- Manufacturer Part Number: ATM90E26-YU-B
- Package: SSOP-28
- Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-46002-SE-M90E26-Datasheet.pdf
- Role Details: ATM90E26 on shared SPI bus with dedicated chip select
- Role: Energy Meter
- License: https://creativecommons.org/licenses/by/4.0/
**Pins:**
- ~CS [pin 24]
- ~RESET [pin 4]
- AGND_1 [pin 6]
- AGND_2 [pin 14]
- AVDD [pin 5]
- CF1 [pin 18]
- CF2 [pin 19]
- DGND [pin 2]
- DVDD [pin 3]
- I1N [pin 11]
- I1P [pin 10]
- I2N [pin 8]
- I2P [pin 7]
- IRQ [pin 20]
- MMD0 [pin 28]
- MMD1 [pin 1]
- OSCI [pin 22]
- OSCO [pin 23]
- RESV_LOW [pin 9]
- SCLK [pin 25]
- SDI/URX [pin 27]
- SDO/UTX [pin 26]
- USEL [pin 12]
- VN [pin 15]
- VP [pin 16]
- VREF [pin 13]
- WARNOUT [pin 17]
- ZX [pin 21]
*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jayeshpathak/smart-power~fp](https://www.flux.ai/jayeshpathak/smart-power~fp).*
---
*Generated from [https://www.flux.ai/jayeshpathak/smart-power~fp](https://www.flux.ai/jayeshpathak/smart-power~fp)*