ESP32 Module Replacement

flux

0:40

Here’s a simple explanation of your project:
  • What it is: A small automation controller. It can read external signals safely, switch a relay to turn loads on/off, store data, and talk over Wi‑Fi/Bluetooth via a helper module.
  • Power path: USB power enters at J4, goes through input protection diode D1, then the buck regulator U1 generates 3.3 V for the board.
  • Main controller and wireless: The microcontroller U3 runs the system; the wireless module ESP1 provides Wi‑Fi/Bluetooth connectivity.
  • Isolated I/O: Optocouplers U4, U5, U6, and U7 interface external signals while protecting the board. These connect out through headers J2 and J5.
  • Relay output: Relay K1 switches an external load on connector J1. It’s driven by transistor Q2 with flyback diode D2 for safe switching.
  • Storage: External QSPI flash U2 holds data or extra firmware.
  • Expansion: A flexible FPC connector FPC1 brings out multiple signals for a camera or dense peripherals.
  • Indicator: Status LED LED1 provides visual feedback.
92 days
optron

optron

what is J4? What does L2 do? What chip is U1?
92 days

flux

2:11

Identifying component details.

Accessing knowledge base.

Reviewing the bill of materials.

Looking for "device description overview" in DS6150AB-05.pdf

Looking for "typical application circuit single inductor buck-boost" in DS6150AB-05.pdf

Looking for "pin description LX1 LX2 pins function" in DS6150AB-05.pdf

Looking for "recommended inductor connection and value selection" in DS6150AB-05.pdf

Looking for "output current rating and output voltage options" in DS6150AB-05.pdf

Looking for "connector type description" in 690-005-298-486.pdf

Gathering component information.

Detailing L2 and U1 components.

Finalizing with brevity.

Here you go:
  • J4: J4 is a Micro USB Type‑B receptacle (EDAC 690-005-298-486). It brings in USB power and data: VBUS, D+, D−, GND, and shield.
  • L2: L2 is the power inductor for the main regulator. Per the U1 datasheet, the RT6150B uses a single inductor placed between pins LX1 and LX2 to perform buck‑boost conversion; this inductor stores and transfers energy and smooths current ripple. Datasheet guidance: “an inductor must be connected between the LX1 and LX2 pins,” typical value around 2.2 µH for 3.3 V from a Li‑ion source, recommended range 1.5–4.7 µH.
  • U1: U1 is Richtek RT6150B‑33GQW, a fixed 3.3 V buck‑boost DC/DC converter, up to 800 mA, 1 MHz, with Power Save Mode. It regulates correctly when VIN is above, below, or equal to 3.3 V. (Source: RT6150A/B datasheet.)
Choose L2 value
Add USB protection
Check U1 passives
Clarify J4 wiring
Series resistors on USB
92 days
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U3
ESP1
GPIO12
GPIO29_ADC3
XOUT
ESP_TXD
CAM_SDA
FOD_4
QSPI_SD3
GPIO26_ADC0
ESP_EN
ESP_TXD
QSPI_SD2
USB_DP
SWDIO
CAM_CK_P
QSPI_SD0
CAM_CK_N
CAM_D0_P
ESP_RXD
QSPI_SCLK
RELAY
ESP_RXD
SWDIO
GPIO15
LED1
CAM_D0_N
ESP_EN
CAM_D1_N
SWCLK
GPIO14
GPIO19
RUN
ESP_RST
ESP_RST
CAM_D1_P
ADC_VREF
GPIO9
FOD_1
CAM_IO1
CAM_IO0
QSPI_SD1
XIN
USB_DM
XIN
QSPI_SS
GPIO13
SWCLK
FOD_2
FOD_3
XOUT
LED1
CAM_SCL
R5
Resistance
27 Ω
R7
Resistance
470 Ω
R3
Resistance
200 Ω
R12
Resistance
1kΩ
R13
Resistance
33 Ω
R14
Resistance
100 Ω
R8
Resistance
1 Ω
R9
Resistance
27 Ω
R6
Resistance
100 Ω
J3
+3V3
C10
Capacitance
0.1uF
C3
Capacitance
15pF
+3V3
C19
Capacitance
15pF
+1V1
+3V3
C13
Capacitance
0.1uF
+3V3
C1
Capacitance
0.1uF
+3V3
C22
Capacitance
0.1uF
C2
Capacitance
0.1uF
+1V1
C8
Capacitance
0.1uF
+3V3
C6
Capacitance
0.1uF
C14
Capacitance
0.1uF
C20
Capacitance
0.1uF
+3V3
C4
Capacitance
0.1uF
C5
Capacitance
47uF
L3
Inductance
Inductance
C21
Capacitance
4.7uF
C7
Capacitance
0.1uF
C12
Capacitance
4.7uF
C17
Capacitance
4.7uF
C9
Capacitance
4.7uF
Y1
Frequency
12MHz
LED1
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    15.8k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
    jharwinbarrozo
    1.1M

PICO Smart Automation Controller NextPCB 1-4 Layer Standard Constraints

PICO Smart Automation Controller NextPCB 1-4 Layer Standard Constraints thumbnail
Use this template if you plan to get your 1-4 layer boards manufactured with HQ NextPCB (nextpcb.com). This template is designed for generic designs to minimize unnecessary costs and complications where possible.
https://www.nextpcb.com/pcb-capabilities
#project-template #template #manufacturer-design-rules

Properties

1.6 mm

1 oz

0.5 oz

Green

FR4

Pricing & Availability

Distributor

Qty 1

Arrow

$2.29–$2.88

Digi-Key

$1.26–$2.75

LCSC

$12.08–$12.14

Mouser

$10.41

Verical

$2.53–$6.42

Controls