Signalbroker lin transceiver
skyguru·signalbroker-lin-transceiver·doc/Lin-bus card Kicad/Lin-bus card.kicad_pcb
About the Signalbroker lin transceiver PCB
Signalbroker lin transceiver is an open source ESP32 PCB design by skyguru, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 105 × 63 mm, with 29 components from 24 distinct parts.
Its main chip is the ESP32 11-20, from the ESP32 family. Other key parts include the MCP2004A-E_P, LM2596S-5 and MCP1416. By type, the board carries 8 diodes, 6 resistors, 5 capacitors, 4 connectors, 3 ICs and 1 transistor.
It belongs with the rf & radio and iot & wireless designs in this gallery.
From the project
Download USB drivers for the ESP device, choose driver depending on OS here: https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/open-source-hardware
Download USB drivers for the ESP device, choose driver depending on OS here: https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/open-source-hardware
To be able to upload this project to your device you need PlatformIO. You can either install it as a CLI application but the preferred way is to use their extension within an IDE.
I guess that the most popular is to use VS Code so I will use it in the example below.

Main components on the Signalbroker lin transceiver
Signalbroker lin transceiver bill of materials (BOM)
29 components, 24 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP2004A-E_P | DIP-8_W7.62mm_Socket | U1 |
| 1 | LM2596S-5 | TO-263-5_TabPin3 | U2 |
| 1 | MCP1416 | SOT-23-5 | U3 |
| 1 | Q_NMOS_GDS | TO-252-2 | Q1 |
| 1 | ESP32 11-20 | PinHeader_1x10_P2.54mm_Vertical | J1 |
| 1 | ESP32 1-10 | PinHeader_1x10_P2.54mm_Vertical | J2 |
| 2 | Banana_Contact | Banana_Jack | J3, J4 |
| 1 | SW_Coded | Rotary_Encoder_AS | SW1 |
| 1 | D_Zener | D_SOD-123F | D1 |
| 2 | D | D_SMA | D2, D3 |
| 2 | D_Zener | D_SOD-323 | D4, D6 |
| 1 | D_Schottky | D_SMA | D5 |
| 1 | Green | Small_LED | D7 |
| 1 | Yellow | Small_LED | D8 |
| 1 | 33uH | L_Wuerth_HCI-5040 | L1 |
| 1 | 100nF | C_0603_1608Metric | C1 |
| 1 | 220pF | C_0603_1608Metric | C2 |
| 1 | 1uF | C_1206_3216Metric | C3 |
| 1 | 680uF | 12.5x13.5cp-AS | C4 |
| 1 | 220uF | CP_Elec_6.3x7.7 | C5 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 4k7 | R_0603_1608Metric | R1 |
| 1 | 51 | R_0603_1608Metric | R2 |
| 2 | 1k | R_0603_1608Metric | R3, R6 |
| 2 | 60 | R_0603_1608Metric | R4, R5 |
Signalbroker lin transceiver design files
The KiCad project lives in the skyguru/signalbroker-lin-transceiver repository on GitHub; these links point at the commit this page was built from.
Signalbroker lin transceiver: common questions
What microcontroller does the Signalbroker lin transceiver use?
The Signalbroker lin transceiver is built around the ESP32 11-20, from the ESP32 family.
How big is the Signalbroker lin transceiver PCB?
The Signalbroker lin transceiver measures 105 × 63 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Signalbroker lin transceiver?
29 components, from 24 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Signalbroker lin transceiver design files?
From the skyguru/signalbroker-lin-transceiver repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Signalbroker lin transceiver design in my own project?
Yes, under the terms of its Apache-2.0 license, which skyguru chose for the repository.
Can I test firmware for the Signalbroker lin transceiver 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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