This was formerly stated to be for the SainSmart relay modules, but it was later pointed out to me that these boards actually already have this logic built in to them. 8 12kΩ ¼ Watt Resistors This ...

This project allows you to control your cars lock system, to lock or unlock your car doors from nearby using a remote as in a normal car alarm system and if the remote is out of range you may send an ...

This design idea outlines a method to use an analogue switch and discrete components to reduce the power dissipated in relay actuation. Presented here is an MAX4624-based circuit to drive a 5V relay ...