A while ago, I made a simple yet expansible dual-channel firecracker/rocket igniter using an Arduino Uno ... This relay module also has two photocouplers to provide galvanic-isolation between its ...

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3 ... Try Out From the circuit diagram of the module, it is clear that, apart from the module only a few external ...

To achieve this functionality, the project uses a DIYables joystick module (and yes ... or even a light bulb (paired with a relay for the Arduino Uno). Try a toggle switch instead, so you won ...