Micro PLC based on RP2040 and programmable via Arduino IDE

A simple audio amplifier shield for the Arduino Uno R3. All through-hole components. #shield #arduino #lm386 ## Usage The output connector is male molex (shrouded), good for cheap laptop speakers like this one: aliexpress.com/item/1005006144805292.html Don't use a speaker under 4ohms. Make sure the arduino is given 5V input. The volume is controlled by a 10k pot.