Alex Glover created a locked box project, some project boxes need a secret knock code to unlock, GPS positions to unlock and dice roll combinations to unlock. I think this is the first time I have seen a box that is unlocked by a flame. Nice thing is that it is not obvious that the box is opened in this way. I think it would be nice to have
Target shooting is fun but there are just so many times you can walk back and forth setting up targets to shoot. With a bit of technology Making Stuff built a system called Robo-Target that automates the process and is controlled remotely. I think the only thing it needs now is a hit detection method, not sure what the best method of doing this is though. A piezo detection
If you would like to keep better track of your energy usage this GSM Power Monitor and Control by Idris Zainal Abidin might be just what you need. There isn’t much details so you would not be able to build it from the article but it should be enough for some inspiration to build your own creation.  The modular build looks great even though it would not be best suited for a
 Check out the Cliff Test, it is a Constant Current Variable Load by TimNJ. It is based on the popular inexpensive load tester circuit that Dave Jones built a while ago. “Here’s some information about it: -External AC/DC power suppply -Fan cooled (no temperature control at the moment) -Load switch (with LED indicator) -10-turn pot -Internal trimmer to set max current (currently set at 1A, but can most likely
3D printing technology has come a long way over the past few years. The speed and strength of the prints is what has made me think twice about purchasing one. The speed and strength issues has changed with the introduction of the Carbon 3D system. Â “UV light triggers photopolymerization and oxygen inhibits it. By carefully balancing the interaction of light and oxygen, CLIP continuously grows objects from a pool
Kerry Wong has built a great Laser Oscilloscope using two Speakers. Of course this is not something that can be used to measure any real voltages or waveforms with any accuracy, for that you can use any used $50 scope. What this one does is produce a great visual display. You would be able to record separate right and left audio tracks to produce any light show you like.
If you are interested in making a very basic scope to monitor some simple things before you spend the money on a real scope have a look at the work that vaupell posted in the Element 14 community. He tried a number of internet scope projects until he found this one that worked like a charm. “After trying many different versions of code and tutorials, I was unable to
