Posted inControls & Timers
Automatic led night light switch
Automatically change the dark corner of the house to be brighter with LED. No AC main but can run with battery solar charger. Do not doubt that How does it work or is it easy? Let's learn.
Posted inControls & Timers 555 Timer
555 PWM LED dimmer circuit diagram | Power Battery Saving
See: 555 PWM DC LED dimmer circuit in 12V source. For a lot of loads even control the speed motor. Nearly with loss and high performance
Posted inControls & Timers
DIY Compressor time delay circuit
SEE DIY compressor time delay circuit. Protect your compressor when power outage and Electrical fluctuations. Using normal parts and cheap.
Posted inControls & Timers
8A solenoid coil driver circuit using MOSFET
You finish PWM signal with Arduino control solenoid valve. You should use solenoid coil driver circuit. Good choice. 2 MOSFET and a few parts
Posted inControls & Timers
10 Key Code Lock Switch Circuit
Simple Key code lock switch circuit using IC-4017 digital, uses 10 switch bottom to control output by Relay. No microcontroller so easier and cheaper!