I finally finished making a new project I wanted to make for a little while. After I finished it I wrote up the tutorial. This has 2 led red/blue strobes with a loud siren mounted on a drill. The LED bars have 9 modes that are selectable. Tutorial can be found here...

i am looking to sell some items that I will not be using and thought maybe someone else could use. DC motors – 1 is a 1 RPM and the other is a 50 RPM - $15.00 each or both for $25.00. USB/SD card player with remote - $10.00 plays from your USB drive/SD card Gear motor - I do not know the...

There have been several different Bunker Hill alarm-type devices from HARBOR FREIGHT mentioned in these threads before (a driveway motion sensor for when someone approaches and those two-part window alarms which will sound when one part detaches from the other). Today I saw these Vibration...