Fresh hacks every day
[littlebird] posted a tutorial on making electronic dice. He's using an ATmega328 for the numbers work, and a mercury switch to activate it all. A nice blue enclosure to match the blue LEDs he's using for the number display wraps it up nicely. Of course, someone had to mention that this was an amazing amount of over kill and it could just be done with a 555 timer like they used to do "back in … [Read more...]
[David Williamson] has put together some pretty amazing little robots from bits of stuff he laying around the house. What initially caught our attention was this drawing robot over at HackedGadgets. We were impressed by the construction, as it looks like almost all of it was scrap. Upon clicking through the link we found a small collection that kept as amused for quite a while. Each one has some … [Read more...]
[Daniel] wrote up a quick tutorial on interfacing with the MQ-3, or better known Breathalyzer from SparkFun with Arduino. While we would have used perhaps an op-amp/comparator based system and kept it in a much smaller package, the idea was so quick and simple and enjoyable we hoped an article might keep some hackers from drinking and driving. [Thanks CletustheYokel for pointing out our silly … [Read more...]
How many times has this one happened to you? Just coming home from work, you walk in from the garage, settle down, and pick up the newspaper. But wait, did you remember to shut the garage door? Presenting the open garage door indicator. [xjc2010] chose the simplest circuit possible, using only a switch to turn on and off the setup, an LED acting as the signal, and a transformer/resistor combo … [Read more...]
GpsPasSion forum member [Ospray] has released a new version of MioPocket. For those of you that don't know, MioPocket is a great unlock kit for GPS units. It basically unlocks the hidden potential of your GPS so you can access the built-in functionality of a PDA as well as retaining the GPS software. This means you can play music, watch video, play games, read and write office documents, and many … [Read more...]
When I built my LumenLab projector, I used a thermal switch to run the fan. This simple control circuit looks like a nice alternative. The circuit is a simple adjustable temperature triggered Fet. If you know the resistance needed, you can replace the potentiometer with a cheap resistor. (You'll want to use a DC fan) … [Read more...]
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