HardLabs

SommerESP

exico91·SommerESP·Kicad/SommerESP/SommerESP.kicad_pcb

SommerESP PCB layout, top view — open source ESP32 board by exico91

About the SommerESP PCB

SommerESP is an open source ESP32 PCB design by exico91, published on GitHub under the MIT license. It is a 2-layer board measuring 76.8 × 23.5 mm, with 30 components from 23 distinct parts.

Its main chip is the ESP32-C3-WROOM-02, from the ESP32 family. Other key parts include the LM2596SX-3.3/NOPB. By type, the board carries 9 resistors, 5 connectors, 5 diodes, 4 capacitors, 2 ICs and 2 transistors.

It belongs with the iot & wireless designs in this gallery.

From the project

A plug and play ESP32-C3 board to control Sommer garage doors

A plug and play ESP32-C3 board to control Sommer garage doors based on ESPHOME

This combo is designed to replace the Sommer Conex Module and the Sommer Output OC Module.

This project takes the 24V and converts it to 3.3V for the ESP32-C3 module, the DC regulator on the power board can take from 4.5V to 40V and cleanly output 3.3V then transfer it to the Control board along with the status signal.

SommerESP, from the project README
From the project README

Main components on the SommerESP

LM2596SX-3.3/NOPBESP32-C3-WROOM-02

SommerESP bill of materials (BOM)

30 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LM2596SX-3.3/NOPB
U4
1
ESP32-C3-WROOM-02
U5
1
STN3NF06
Q1
1
2N7002DW
Q2
1
C6332201
Serial programmer
J1
1
C146243
SOMMER CONEX BOARD
J3
1
C49257
SOMMER CONEX KEYPAD
J4
1
C2718488
SOMMER OUTPUT OC
J6
1
SOMMER OUTPUT OC 7.5mm
J7
2
C2905192
DEALON TD-1183SN
S1, S2
1
C397047
LED
D1
1
C497961
LED
D2
1
SS36
D3
1
1N4148
D4
1
SS54
D5
1
FAUL0630-330MT
L1
1
C412252
0805 10uf
C1
1
C412252
0805 100nf
C2
1
C412252
1206 220uf
C3
1
C412252
0805 22uf
C4
Show 3 more
QtyPartRefs
2
C3017758
0603 100ohm
R1, R2
4
C2930027
0603 10k
R3, R4, R12, R13
3
C116692
0603 1k
R7, R8, R11

SommerESP design files

The KiCad project lives in the exico91/SommerESP repository on GitHub; these links point at the commit this page was built from.

SommerESP: common questions

What microcontroller does the SommerESP use?

The SommerESP is built around the ESP32-C3-WROOM-02, from the ESP32 family.

How big is the SommerESP PCB?

The SommerESP measures 76.8 × 23.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SommerESP?

30 components, from 23 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 SommerESP design files?

From the exico91/SommerESP repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the SommerESP design in my own project?

Yes, under the terms of its MIT license, which exico91 chose for the repository.

Can I test firmware for the SommerESP 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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