
Modbus Adapter
tomasmcguinness/esp32-modbus-serial-adapter
The hardware folder contains a KiCad PCB design, designed around the ESP32-C6-MINI-1. Both the antenna and non-antenna (U1) versions will work here due to the location of the ESP32.

A super small ESP32C6 devboard perfect for ESPHome.
ESPforHome is an open-source printed circuit board by Las-Vejas, from the Las-Vejas/ESPforHome repository on GitHub, published under the MIT licence. It is a 2-layer board of 30 × 30 mm with 19 parts on 38 nets, routed with 234 tracks and 37 vias.
It is built around the AP2112K-3.3 and ESP32-C6-MINI-1. Its parts include 7 resistors, 3 connectors, 2 ICs, 2 switches and 1 capacitor. It belongs with the microcontroller boards and home automation and IoT boards and the ESP32 and RISC-V boards of this library.
A super small ESP32C6 devboard perfect for ESPHome.
It uses the ESP32-C6-MINI-1 and ESPHome for the software. 14 GPIO pins along with 2 GND, 1 3V3 and 1 5V pins are available to the user. The board is exactly 30mm x 30mm.

The bom is available in /BOM.csv
| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R4, R5 |
| 2 | 2.2k | Resistor_SMD:R_0402_1005Metric | R6, R7 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | Conn_01x09_Pin | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical | J2, J3 |
| 2 | SW_SPST | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | ESP32-C6-MINI-1 | RF_Module:ESP32-C6-MINI-1 | U2 |
| 1 | LOGO | LOGO | G*** |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
The 16 most common of 19 parts.

tomasmcguinness/esp32-modbus-serial-adapter
The hardware folder contains a KiCad PCB design, designed around the ESP32-C6-MINI-1. Both the antenna and non-antenna (U1) versions will work here due to the location of the ESP32.


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It measures 30 × 30 mm and has 2 copper layers, 1.6 mm thick.
19 parts, built around the AP2112K-3.3 and ESP32-C6-MINI-1. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the Las-Vejas/ESPforHome repository on GitHub, at the commit this page was made from: the board is PCB/ESPforHome.kicad_pcb and its schematic PCB/ESPforHome.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).