Mike writes in about his super-cool Open GPS Tracker. Here is the simplest build-it-yourself GPS tracker yet. No expensive GSM module required – I am using the $20 GoPhone from WalMart or Target. Uses a 14-pin AVR microcontroller, a voltage regulator, a transistor, a GPS module 2 inches across, and that’s it. My open source […]
I made something like this when I was about 10 years old. My version wasn’t as complicated, and it sank in a matter of minutes. I really like the use of a nail and coil to make a simple solenoid for switching the moors on and off. Overall it’s a pretty good use of recycled […]
Michelle @ CRAFT points us to some great recipes for making your own household cleaning products, including a baking soda/vinegar toilet bowl cleaner and a salt copper polish.
Here’s a how-to regarding the detection of volatile organic compounds using Arduino and a TGS2620 sensor – This lets your Arduino smell (and hence you program responses to) overall gas levels for a variety of nasties, including ethanol, methane, formaldehyde, and a bunch of other volatile organic compounds. No explanation as to how refraining from […]
Ryan writes in with a helpful how-to – Well, it’s garden season again, which means it’s time to start composting. I meant to be composting throughout the winter, but a telephone pole fell on my old compost pile, and I’ve had absolutely no motivation to repair it. It wasn’t much of a pile anyways. As […]
Here’s how to wire panel components – So you’ve got a headphone amplifier board assembled and working on the bench, the case has all the holes drilled in it and you’ve mounted the components… Now what? This article takes you through the steps you need to hook a typical headphone amp up to the panel […]
Evil Mad Scientist Auxiliary member Fightingsquid built this aesthetically pleasing Peggy board display. Nice use of multiple LED sizes. Possibly a relative of the 8-bit blooper? – Peggy kenkaika set on Flickr In the Maker store: Peggy v1.0 Kit
