Petar Marinov

This microcontroller is based on the ESP32 WROOM DEVKIT V1.

The controller features:

8 digital inputs, galvanically isolated via optocouplers.

8 NMOS transistor outputs, rated at 2A each.

2 analog inputs with variable resistors.

Additionally, a number of GPIO pins are brought out directly to the connectors on the sides.

A 1″ OLED display (128×64, SSD1306).

LED indicators are provided for the digital inputs and outputs.

It is designed for DIN-rail mounting, and various expansion modules can be connected to the ports on either side.

A detailed description, schematics, and photographs are provided below.

Description

Scheme

Gallery