Wi-Se ESP8266 - Raspberry Pi style header version
depau·wi-se-hw·wi-se-rpi/wi-se-rpi.kicad_pcb
About the Wi-Se ESP8266 - Raspberry Pi style header version PCB
Wi-Se ESP8266 - Raspberry Pi style header version is an open source ESP32 PCB design by depau, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 21.6 × 20 mm, with 40 components from 19 distinct parts.
Its main chip is the ESP-WROOM-02, from the ESP32 family. Other key parts include the AMS1117-3.3. By type, the board carries 20 resistors, 7 capacitors, 4 transistors, 4 diodes, 2 ICs and 2 switches.
It belongs with the iot & wireless designs in this gallery.
From the project
Cheap and tiny ESP8266 boards for Wi-Se to access your SBC or router serial port remotely
Wi-Se is a set of ESP8266-based boards intended to be used with Wi-Se (firmware).
They are intended to be always connected to a device's UART header in order to troubleshoot boot issues or crashes without having to take the board out of the case.
Provides solder jumpers to configure the header output. It can be powered from 5V or 3.3V.
Compatible with Raspberry Pi and all boards with a compatible pinout. Runs on 5V.

Main components on the Wi-Se ESP8266 - Raspberry Pi style header version
Wi-Se ESP8266 - Raspberry Pi style header version bill of materials (BOM)
40 components, 19 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U1 |
| 1 | ESP-WROOM-02 | ESP-WROOM-02 | U2 |
| 2 | SS8050-G | SS8050-G | Q1, Q2 |
| 2 | 2N7002 | SOT-23 | Q3, Q4 |
| 1 | RASPI | PinSocket_2x04_P2.54mm_Vertical | J1 |
| 1 | RESET | Tactile_Push_Button_SMD_3x3x1.5mm.kicad_mod | SW1 |
| 1 | BOOT0 | Tactile_Push_Button_SMD_3x3x1.5mm.kicad_mod | SW2 |
| 1 | BLUE | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | AMBER | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 1 | RED_TX | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3 |
| 1 | RED_RX | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4 |
| 3 | 10u | C_1206_3216Metric | C1, C2, C5 |
| 1 | 0u1 | C_0603_1608Metric | C6 |
| 3 | 0u1 | C_0402_1005Metric | C7, C8, C9 |
| 1 | 1k5 | R_0402_1005Metric | R1 |
| 3 | 2k2 | R_0402_1005Metric | R2, R3, R4 |
| 11 | 10k | R_0402_1005Metric | R5, R6, R7, R8, R9, R14, R15, R16 +3 |
| 4 | 1k | R_0402_1005Metric | R10, R11, R12, R13 |
| 1 | 0 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19 |
Wi-Se ESP8266 - Raspberry Pi style header version design files
The KiCad project lives in the depau/wi-se-hw repository on GitHub; these links point at the commit this page was built from.
Wi-Se ESP8266 - Raspberry Pi style header version: common questions
What microcontroller does the Wi-Se ESP8266 - Raspberry Pi style header version use?
The Wi-Se ESP8266 - Raspberry Pi style header version is built around the ESP-WROOM-02, from the ESP32 family.
How big is the Wi-Se ESP8266 - Raspberry Pi style header version PCB?
The Wi-Se ESP8266 - Raspberry Pi style header version measures 21.6 × 20 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Wi-Se ESP8266 - Raspberry Pi style header version?
40 components, from 19 distinct parts. The full bill of materials is listed on this page.
Where can I download the Wi-Se ESP8266 - Raspberry Pi style header version design files?
From the depau/wi-se-hw repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Wi-Se ESP8266 - Raspberry Pi style header version design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which depau chose for the repository.
Can I test firmware for the Wi-Se ESP8266 - Raspberry Pi style header version without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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