The Open 7400 Logic Competition is open and waiting your creative entry. I am not even sure the last time I slid open my drawer that contains my various 7400 chips I did see my TI 7400 yellow data book the other day. The thing I used to love about troubleshooting a circuit built with 7400 parts is that you could easily confirm a bad chip hunch in about 5
I have built a few speaker enclosures over the years. Mostly sub boxes that are made from square cuts of MDF on the table saw. A bit of handy work with a jigsaw and a drill usually results in a speaker box that is functional but definitely doesn’t look as good as a store bought speaker cabinet. This DIY 2-Way Loudspeaker that Adam McCall built isn’t a budget build since
If you like steampunk you will want to watch the video below where fellow Canadian Robert Shuttleworth from shuttlewerks / ephemera shows us how he builds a webcam from an old electric heater. “Steam punk webcam built from a 1930’s electric heater. Not technically difficult and should cost under $50. Resulting image is old time Alice Through the Looking Glass”
I have been putting this SilverCloud Real-Time GPS Tracking System by Land Air Sea through some testing over the past few months. Don’t let the tiny package fool you, this small box allows you to track anything in real time. You can do tracking on a computer, smart phone or playback the history logs anytime. The main purpose of the SilverCloud system is for vehicle tracking but you could stick
This Portable Car Alternator Charging System from The Back Shed solves quite a few problems when it comes to portable power. If you have a dead battery and no plug close by to charge it what do you do? Get a boost is one option but if you would like to be self reliant this alternator charging system is a cool idea. It uses a small gas motor to turn
Check out this RGB Viking Helmet with LED Mohawk. If you are looking for some attention this is guaranteed to get it. It uses OctoBrite LED boards to make the magic happen Via: Build Lounge “The control box was a pain, but such things usually are. There was barely enough room for the parts and wires I was using…and it turned out that the electret amp was picking up too
Xellers shows us how to build a DIY Spark Gap Tesla Coil in this Instructable. When you are done looking at the Tesla Coil have a look at the DIY CRT he built! “Shoot foot-long bolts of lighting through the air, light fluorescent tubes without wires, and power your other high voltage experiments with the aid of this tabletop-sized Tesla coil! The key to this coil’s performance on such a
