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Instructables user [PenfoldPlant] is a big fan of indoor rock climbing, and while watching others make difficult climbs, he has often wondered if he could follow the same route up the wall. Unfortunately, aside from watching the other climbers and hoping to remember the path they have taken, he found there isn't much you can do to ensure that you have precisely replicated the climb. He thought … [Read more...]
Here at Hackaday, we're not against showing videos of gratuitous destruction just for the sake of it, though we try not to make it a habit. In this case we just couldn't help ourselves. However, this video technically constitutes a security hack, as it does involve erasing sensitive information from CDs... ...with awesome! This may be the coolest CD eraser we've seen yet. Positioned between … [Read more...]
[Gordon] sent us a tip about this simple laser trip wire system after reading yesterday's post on a more complicated laser security unit. That build did a lot to provide functionality, such as a system to disarm the trip wire, and a robust light detection circuit. This time around there's more happening with smoke and mirrors than with electronics. [The Timmy] built this simpler version based … [Read more...]
[Sean Michael Ragan] built this FM transmitter which shows off its circuitry via a clear plastic dome. The device is electrically identical to one we looked at in September. That version championed a construction method that used small squares of copper clad as solder points which were each super-glued to a large copper-clad platform serving as a ground plane. [Sean] is using a printed circuit … [Read more...]
Pop a few aluminum bits into this little RC racer and you'll have power for around forty minutes. This concept, which has been patented, is the result of a college research project. It uses a chemical reaction between aqueous Sodium Hydroxide and aluminum. The result of that reaction is hydrogen, which is gathered and directed to a fuel cell that drives the car. Novel? Yes. Interesting? … [Read more...]
Runners that wear shoes with the Nike+ system can upload GPS data about their runs to the proprietary website. If you've been using this for a while you may be reluctant to switch to another service that works with the hardware because you don't want to lose the historical data. Faced with this issue, [Robert Kosara] developed some software that can scrape Nike+ data. Not only did he write the … [Read more...]
Ludum Dare 20 is only 10 days away! Great, what the heck is Ludum Dare? Well its only the most awesome video game creation contest on the internet, thats what. While originally for the hardest of the hard core, it has recently been split up into 2 events so everyone gets to have some fun. The Jam is pretty relaxed in the rules. Lets say you and 4 buddies want to make the ultimate zelda remix … [Read more...]
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