Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

Every car in the junkyard has value. It all comes down to paying attention to opportunities when they arise. Car Craft family member Tim Moore is a card-carrying JYB-er who keeps his eyes open and is ...

This dark activated switch can trigger a relay to operate an AC lamp at Sunset. The lamp remains on till morning and then turns off. This eliminates the need of switching the Porch lamp or Backyard ...