# smaller oneside ver

## Description

Battery\-powered smart pet collar PCB with ESP32\-class wireless MCU, GPS, heart sensing, temperature, motion sensing, microphone, USB programming, and mobile\-app data connectivity\.

## Project Details

- **Owner:** amirma
- **Created:** 9/20/2026
- **Last Updated:** 9/20/2026
- **Visibility:** Public

## Key Components

### D1 — [USBLC6\-2SC6](https://flux.ai/lcsc/usblc6-2sc6~2e9x.md)

- JLCPCB Part Class: Extended Part
- Role: Protection
- Manufacturer Name: UMW\(友台半导体\)
- Symbol Style: parametric\-v1
- Functional Group: USB Protection
- Breakdown Voltage: 6V
- Mount: Surface Mount
- Manufacturer Part Number: USBLC6\-2SC6
- Operating Temperature: \-55°C \~ 125°C \(TJ\)
- Datasheet URL: https://www\.lcsc\.com/datasheet/C2687116\.pdf?spm=wm\.sxq\.inf\.ggs&lcsc\_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNRTlhdUVdURFlXXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D
- Maximum Clamping Voltage: 17V
- Part Type: ESD Protection Devices
- Role Details: USB 2\.0 D\+/D\- ESD protection between J1 and U1
- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BL
- Peak Pulse Current: 5A
- Power: 150W
- LCSC Part Number: C2687116

**Pins:**
- GND [pin 2]
- I/O1 [pin 1]
- I/O1 [pin 6]
- I/O2 [pin 3]
- I/O2 [pin 4]
- VBUS [pin 5]

### D2 — [ESD5341N](https://flux.ai/lcsc/esd5341n~k8iz.md)

- Forward Voltage: 0\.7V at 1AV
- Datasheet URL: https://www\.lcsc\.com/datasheet/C3021106\.pdf?spm=wm\.sxq\.inf\.ggs&lcsc\_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1VbVVxRR1JXUTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D
- Manufacturer Name: TECH PUBLIC\(台舟\)
- Diode Type: TVS Diode
- JLCPCB Part Class: Extended Part
- LCSC Part Number: C3021106
- Manufacturer Part Number: ESD5341N
- Functional Group: USB Protection
- Role: Protection
- Package or Case Code: DFN1006\-2L\-RD
- Part Type: TVS
- License: https://creativecommons\.org/licenses/by/4\.0/
- Mount: Surface Mount
- Max Reverse Voltage: 5V
- Role Details: USB VBUS ESD and surge clamp at J1

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### F1 — [1206L075THYR](https://flux.ai/adrian95/1206l075thyr~5hm.md)

- Package or Case Code: 1206\_3216Metric
- Manufacturer Name: Littelfuse Inc\.
- Role Details: 750mA hold resettable fuse for USB VBUS input
- Functional Group: USB Protection
- Manufacturer Part Number: 1206L075THYR
- Datasheet URL: https://www\.littelfuse\.com/assetdocs/resettable\-ptcs\-1206l\-datasheet?assetguid=2b6a1515\-d4ee\-4c83\-8bd4\-152b4901b8f5
- Role: Protection
- Mount: Surface Mount
- Part Type: Fuse
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### J1 — [USB4215\-03\-A](https://flux.ai/adrian95/usb4215-03-a~kg3.md)

- Datasheet URL: https://gct\.co/files/specs/usb4215\-spec\.pdf
- Part Type: USB C
- Mount: Surface Mount
- Symbol Style: parametric\-v1
- Package or Case Code: GCT\_USB4215\-03\-A\_REVA
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: USB\-C sink for 5V input plus USB2 D\+/D\- to ESP32\-S3 native USB\.
- Manufacturer Name: GCT
- Manufacturer Part Number: USB4215\-03\-A
- Role: USB\-C Connector

**Pins:**
- CC1 [pin A5]
- CC2 [pin B5]
- DN1 [pin A7]
- DN2 [pin B7]
- DP1 [pin A6]
- DP2 [pin B6]
- GND\_A [pin A1\_B12]
- GND\_B [pin B1\_A12]
- SBU1 [pin A8]
- SBU2 [pin B8]
- SHIELD [pin SH1]
- SHIELD [pin SH4]
- SHIELD [pin SH2]
- SHIELD [pin SH3]
- VBUS\_A [pin A4\_B9]
- VBUS\_B [pin B4\_A9]

### J2 — [S2B\-PH\-K\-S\(LF\)\(SN\)](https://flux.ai/lcsc/s2b-ph-k-slfsn~vk6f.md)

- Package or Case Code: CONN\-TH\_S2B\-PH\-K\-S\-LF\-SN
- Manufacturer Part Number: S2B\-PH\-K\-S\(LF\)\(SN\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_JST\-S2B\-PH\-K\-S\-LF\-SN\_C173752\.pdf
- Part Type: Wire To Board / Wire To Wire Connector
- Role: Battery Connector
- Role Details: JST\-PH 2\-pin connector for single\-cell LiPo battery\.
- Manufacturer Name: JST
- Product Info Url: https://lcsc\.com/product\-detail/PH\-Connectors\_JST\-Sales\-America\_S2B\-PH\-K\-S\-LF\-SN\_JST\-Sales\-America\-S2B\-PH\-K\-S\-LF\-SN\_C173752\.html
- Mount: Through Hole
- JLCPCB Part Class: Extended Part
- LCSC Part Number: C173752

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J3 — [CONMHF1\-SMD\-G\-T](https://flux.ai/adrian95/conmhf1-smd-g-t~os6.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Mount: Surface Mount
- Part Type: Connector
- Package or Case Code: CONMHF1SMDGT
- Manufacturer Part Number: CONMHF1\-SMD\-G\-T
- Role: RF Connector
- Datasheet URL: https://www\.te\.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=conmhf1\-smd\-g\-t\-ds&DocType=Data\+Sheet&DocLang=English&DocFormat=pdf&PartCntxt=CONMHF1\-SMD\-G\-T
- Role Details: 50Ω U\.FL connector for external GNSS antenna to MAX\-M10S RF\_IN
- Manufacturer Name: TE Connectivity Linx

**Pins:**
- GND\_1 [pin 2]
- GND\_2 [pin 3]
- GND\_3 [pin 4]
- SIGNAL [pin 1]

### SW1 — [TS\-1088\-AR02016](https://flux.ai/lcsc/ts-1088-ar02016~e3n1.md)

- Manufacturer Name: XUNPU\(讯普\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302330\_XUNPU\-TS\-1088\-AR02016\_C720477\.pdf
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: TS\-1088\-AR02016
- Mount: Surface Mount
- Role: Reset Button
- Product Info Url: https://lcsc\.com/product\-detail/Tactile\-Switches\_XUNPU\-TS\-1088\-AR02016\_C720477\.html
- LCSC Part Number: C720477
- Part Type: Tactile Switches
- Role Details: Momentary switch pulls ESP32 EN/CHIP\_PU low\.
- Package or Case Code: SW\-SMD\_L3\.9\-W3\.0\-P4\.45

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### SW2 — [TS\-1088\-AR02016](https://flux.ai/lcsc/ts-1088-ar02016~e3n1.md)

- Role: Boot Button
- Mount: Surface Mount
- Manufacturer Name: XUNPU\(讯普\)
- Role Details: Momentary switch pulls ESP32 GPIO0 low for bootloader mode\.
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302330\_XUNPU\-TS\-1088\-AR02016\_C720477\.pdf
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: TS\-1088\-AR02016
- Product Info Url: https://lcsc\.com/product\-detail/Tactile\-Switches\_XUNPU\-TS\-1088\-AR02016\_C720477\.html
- LCSC Part Number: C720477
- Part Type: Tactile Switches
- Package or Case Code: SW\-SMD\_L3\.9\-W3\.0\-P4\.45

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### U1 — [ESP32\-S3\-WROOM\-1\-N8R2](https://flux.ai/lcsc/esp32-s3-wroom-1-n8r2~aca7.md)

- LCSC Part Number: C2913204
- JLCPCB Part Class: Extended Part
- Symbol Style: parametric\-v1
- Role Details: ESP32\-S3 module; BLE phone app link, WiFi development/cloud option, native USB programming\.
- Datasheet URL: https://documentation\.espressif\.com/esp32\-s3\-wroom\-1\_wroom\-1u\_datasheet\_en\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: MCU / Wireless
- Mount: Surface Mount
- Part Type: WiFi Modules
- Manufacturer Part Number: ESP32\-S3\-WROOM\-1\-N8R2
- Package or Case Code: WIRELM\-SMD\_ESP32\-S3\-WROOM\-1
- Manufacturer Name: ESPRESSIF\(乐鑫\)

**Pins:**
- 3V3 [pin 2]
- EN [pin 3]
- GND [pin 1]
- GND [pin 41]
- GND [pin 40]
- 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]

### U2 — [MAX30102EFD\+T](https://flux.ai/vasy_skral/max30102efdplust~r7h.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Symbol Style: Parametric
- Manufacturer Name: Maxim Integrated
- Mount: Surface Mount
- Part Type: Integrated Circuit
- Role Details: I2C optical PPG sensor; requires optical window/contact with animal skin/fur management\.
- Role: Heart Sensor
- Datasheet URL: https://datasheets\.maximintegrated\.com/en/ds/MAX30102\.pdf
- Package or Case Code: OESIP\-14\_5\.6x3\.3mm\_P0\.8mm
- Manufacturer Part Number: MAX30102EFD\+T

**Pins:**
- \~INT [pin 13]
- GND [pin 12]
- IR\_DRV [pin 6]
- NC [pin 8]
- NC [pin 14]
- NC [pin 1]
- NC [pin 7]
- PGND [pin 4]
- R\_DRV [pin 5]
- SCL [pin 2]
- SDA [pin 3]
- VDD [pin 11]
- VLED\+ [pin 10]
- VLED\+ [pin 9]

### U3 — [MAX\-M10S\-00B](https://flux.ai/adrian95/max-m10s-00b~pov.md)

- Symbol Style: parametric\-v1
- Mount: Surface Mount
- Package or Case Code: LGA\-18\_10\.1x9\.7mm
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: GNSS module
- Manufacturer Part Number: MAX\-M10S\-00B
- Datasheet URL: https://content\.u\-blox\.com/sites/default/files/MAX\-M10S\_DataSheet\_UBX\-20035208\.pdf
- Manufacturer Name: U\-blox
- Role Details: u\-blox M10 GNSS on 3\.3V; VIO\_SEL intentionally open per datasheet for 3\.3V V\_IO; UART and external U\.FL antenna
- Role: GPS / GNSS

**Pins:**
- \~RESET\~ [pin 9]
- \~SAFEBOOT\~ [pin 18]
- EXTINT [pin 5]
- GND [pin 1]
- GND [pin 12]
- GND [pin 10]
- LNA\_EN [pin 13]
- RF\_IN [pin 11]
- RXD [pin 3]
- SCL [pin 17]
- SDA [pin 16]
- TIMEPULSE [pin 4]
- TXD [pin 2]
- V\_BCKP [pin 6]
- V\_IO [pin 7]
- VCC [pin 8]
- VCC\_RF [pin 14]
- VIO\_SEL [pin 15]

### U4 — [TMP117AIDRVR](https://flux.ai/lcsc/tmp117aidrvr~2nvt.md)

- LCSC Part Number: C699536
- Operating Temperature: \-55°C \~ 150°C \(TA\)
- Sensor Type: Digital, Local
- Role: Temperature Sensor
- JLCPCB Part Class: Extended Part
- Role Details: I2C low\-power temperature sensor for collar/skin\-adjacent measurements\.
- Manufacturer Part Number: TMP117AIDRVR
- Mount: Surface Mount
- Manufacturer Name: TI\(德州仪器\)
- Package or Case Code: WSON\-6\_L2\.0\-W2\.0\-P0\.65\-TL\-EP
- Voltage Supply: 1\.8V \~ 5\.5V
- Part Type: Temperature Sensors

**Pins:**
- ADD0 [pin 4]
- ALERT [pin 3]
- EP [pin 7]
- GND [pin 2]
- SCL [pin 1]
- SDA [pin 6]
- V\+ [pin 5]

### U5 — [BMI270](https://flux.ai/vasyl/bmi270~h5.md)

- Role: Motion Sensor
- Manufacturer Part Number: BMI270
- Manufacturer Name: Bosch Sensortec
- Mount: Surface Mount
- Role Details: Low\-power I2C accelerometer/gyroscope for pet activity and posture\.
- License: https://creativecommons\.org/licenses/by/4\.0/
- Package or Case Code: LGA\-14\_3\.0x2\.5mm
- Part Type: IMU
- Datasheet URL: https://www\.bosch\-sensortec\.com/media/boschsensortec/downloads/datasheets/bst\-bmi270\-ds000\.pdf

**Pins:**
- ASCX [pin 3]
- ASDX [pin 2]
- CSB [pin 12]
- GND [pin 7]
- GNDIO [pin 6]
- INT1 [pin 4]
- INT2 [pin 9]
- OCSB [pin 10]
- OSDO [pin 11]
- SCX [pin 13]
- SDO [pin 1]
- SDX [pin 14]
- VDD [pin 8]
- VDDIO [pin 5]

### U6 — [SPH0645LM4H](https://flux.ai/kicad-part-library/sph0645lm4h~j0b.md)

- Manufacturer Name: Knowles
- Manufacturer Part Number: SPH0645LM4H\-1
- Part Type: Sensor Audio
- Package or Case Code: Knowles\_SPH0645LM4H\-6\_3\.5x2\.65mm
- Role: Microphone
- Mount: Surface Mount
- Role Details: I2S digital MEMS microphone connected to ESP32\-S3\.
- Datasheet URL: https://www\.knowles\.com/docs/default\-source/default\-document\-library/sph0645lm4h\-1\-datasheet\.pdf

**Pins:**
- BCLK [pin 4]
- DATA [pin 6]
- GND [pin 3]
- SEL [pin 2]
- VDD [pin 5]
- WS [pin 1]

### U7 — [BQ24074RGTT](https://flux.ai/lcsc/bq24074rgtt~fpyl.md)

- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/bq24074\.pdf
- Part Type: Battery Management ICs
- Mount: Surface Mount
- JLCPCB Part Class: Extended Part
- Package: VQFN\-16 RGT \(3 mm × 3 mm\) with exposed thermal pad
- Implementation Details: Standalone single\-cell Li\-Ion/Li\-Polymer linear charger and power\-path management IC; 4\.2 V battery regulation, 4\.4 V OUT regulation, 10\.5 V OVP, 1\.5 A programmable fast charge/input current limit\.
- LCSC Part Number: C2861252
- Operating Voltage: IN operating range 4\.35–10\.2 V for BQ24074; IN withstand/recommended range up to 26 V, abs max 28 V
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Battery Charger / Power Path
- Symbol Style: parametric\-v1
- Operating Temperature: \-40 to 85°C
- Role Details: USB 5V LiPo charger/power path; EN1 tied to SYS and EN2 tied to GND selects USB500 500mA input mode
- Manufacturer Part Number: BQ24074RGTT
- Package or Case Code: VQFN\-16\_L3\.0\-W3\.0\-P0\.50\-TL\-EP1\.7
- Manufacturer Name: Texas Instruments

**Pins:**
- \~\{CE\} [pin 4]
- \~\{CHG\} [pin 9]
- \~\{PGOOD\} [pin 7]
- BAT [pin 2]
- BAT [pin 3]
- EN1 [pin 6]
- EN2 [pin 5]
- EP [pin 17]
- ILIM [pin 12]
- IN [pin 13]
- ISET [pin 16]
- ITERM [pin 15]
- OUT [pin 11]
- OUT [pin 10]
- TMR [pin 14]
- TS [pin 1]
- VSS [pin 8]

### U8 — [TPS63070RNMR](https://flux.ai/lcsc/tps63070rnmr~bg45.md)

- JLCPCB Part Class: Extended Part
- LCSC Part Number: C109322
- Max Input Voltage: 16V
- Mount: Surface Mount
- Role: 3\.3V Buck\-Boost Regulator
- Output Type: Adjustable
- Part Type: DC\-DC Converters
- Role Details: LiPo buck\-boost 3\.3V regulator; selected to exceed \~700mA design peak\.
- Manufacturer Name: TI\(德州仪器\)
- Operating Temperature: \-40°C \~ 125°C \(TJ\)
- Product Info Url: https://lcsc\.com/product\-detail/DC\-DC\-Converters\_TI\_TPS63070RNMR\_TPS63070RNMR\_C109322\.html
- Current Output: 2A
- Package or Case Code: VQFN\-HR\-15\_L3\.0\-W2\.5\-P0\.50\-BL\_TPS63070RNMR
- Manufacturer Part Number: TPS63070RNMR
- Topology: Buck\-Boost
- Max Voltage Output: 9V
- Datasheet URL: https://www\.lcsc\.com/datasheet/lcsc\_datasheet\_2302221930\_Texas\-Instruments\-TPS63070RNMR\_C109322\.pdf
- Frequency: 2\.4MHz

**Pins:**
- EN [pin 14]
- FB [pin 5]
- FB2 [pin 6]
- GND [pin 4]
- L1 [pin 11]
- L2 [pin 9]
- PG [pin 2]
- PGND [pin 10]
- PS/SYNC [pin 1]
- Vaux [pin 3]
- Vin [pin 12]
- Vin [pin 13]
- Vout [pin 8]
- Vout [pin 7]
- Vsel [pin 15]

### U9 — [TPS71518\_\_SC70](https://flux.ai/kicad-part-library/tps71518sc70~puv.md)

- Package or Case Code: SOT\-353\_SC\-70\-5
- Role Details: 1\.8V LDO for MAX30102 VDD; powered from 3V3, 50mA capacity
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/tps715\.pdf
- Functional Group: Heart Sensor Power
- Manufacturer Name: Texas Instruments
- Mount: Surface Mount
- Manufacturer Part Number: TPS71518DCKR
- Role: Power Conversion

**Pins:**
- GND [pin 2]
- IN [pin 4]
- NC [pin 3]
- NC [pin 1]
- OUT [pin 5]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/amirma/smaller\-oneside\-ver\~qt](https://flux.ai/amirma/smaller-oneside-ver~qt).*

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*Generated from [https://flux\.ai/amirma/smaller\-oneside\-ver\~qt](https://flux.ai/amirma/smaller-oneside-ver~qt)*