How to make simple and easy to use photography backdrop clips for under $0.05 each
How to add a 12 volt car accessory plug to your battery charger
DIY adapter to run 9 – 18 volt cordless power tools off a car battery, power Supply or charger
How to control a relay with a PIR motion sensor
tape measure fox hunting beam antenna for HAM radio.
simple ham radio mic preamp for a HT.
Simple FOX hunting HT Attenuator.