DIY Projects

DIY Drawdio

DIY Drawdio

Drawdio on Veroboard from Dylski on Vimeo. Ladyada writes: dylski wanted to build a Drawdio, but didn’t want to pay/wait for international shipping. No problem, he just made his own out of parts kicking around his workbench and some stripboard/”veroboard”. The big insight for me here is the stripboard preplanning. Check out all the details, […]

Kill A Watt – Take apart

Kill A Watt – Take apart

Kill A Watt – Take apart @ SparkFun- Plug the Kill-a-watt into a standard 110V US outlet, then plug the device (like a TV, air-conditioner, computer, etc) you want to measure into the Kill-a-watt. The KAW will measure voltage, amps, watts, Hz, kWhr, and elapsed time (since plugged in). The unit requires no batteries (it’s […]

The  oscilloscope

The $5 oscilloscope

In response to my posting of the DIY hobby o-scope item, Ken_S sent a link to his “Minimalist Oscilloscope 08M Project,” which uses a PICAXE 08M chip and a Nokia cellphone screen to create a… well… minimal oscilloscope. Given that he got the phone for a buck, he was able to build the scope for […]