Libaries, wiring, and example code for various inputs / outputs for Arduino and other microprocessors When you need more inputs/outputs for your Arduino project, the response in some forums is "Use a ...

Arduino Uno With Optocoupler Relay Arduino Uno With Optocoupler Relay is a board based on ATmega328p which is an 8-bit microcontroller from ATMEL. The main purpose of building this board is to use it ...

An optocoupler is a combination of a light source and a photosensitive detector. In the optocoupler, or photon coupled pair, the coupling is achieved by light being generated on one side of a ...