1. 3

    Solar charger & timer

    Hi I need help building the electronics for a home project. Essentially I am trying to: 1. Charge a battery with a solar panel 2. Activate a 12solenoid valve controlling pressurized water with a push button 3. Have the solenoid close after an adjustable time delay I was able to find solar...
  2. Q

    Fingerprint Module with Door lock Solenoid - Arduino Nano ..

    Greeting, Thank you for your support guys. I am a newbie to the Electronics, but I did read for a long time and search but this is my first circuit it may look easy for you but I need help. Here are two schematic and I need them to be joined together with Op protection and reverse voltage...