Petar Marinov

This microcontroller is based on the off-the-shelf Arduino Nano module.

It features:

8 digital inputs, galvanically isolated via optocouplers (D2, D4, D6, D8, A0, A1, A2, A3).

8 NMOS transistor outputs (D3, D5, D6, D9, D10, D11, D12, D13).

2 analog inputs with provision for resistor voltage dividers, allowing for operation with voltages higher than 5V (A6, A7).

A function button connected to D12 (note: when the button is in use, output D12 cannot be used).

An onboard 5V voltage regulator, supporting a supply voltage range of 6V to 28V.

A connector on the board for an SSD1306 OLED display.

Scheme

Gallery