Fresh hacks every day
When working on battery-dependent projects you want accurate performance information where a datasheet may not be available. [E. Lelic] set out to build a device that would meter internal battery resistance but ended up with a bench tool that can do much more than that. A PIC 16F88 microcontroller takes center stage on the meter, taking voltage level readings, monitoring a DS1820 temperature … [Read more...]
Hackaday forum member [Dan Fruzzetti] wrote in to share a simple, yet useful hack he built just the other day. He and his wife both have Evo 4G smartphones and they were pretty disappointed in the lack of portable charging solutions available. Instead of buying something and modifying it to his needs, [Dan] decided to build a quick and dirty charger instead. His ghetto-mintyboost was built into … [Read more...]
[Nothinglabs] built this motor controller as an alternative to using an H-bridge. They call it the RAT controller which stands for "Relay and Transistors". You can see above that two Darlington transistors along with their base transistors allow logic signals to switch the relay on and off, driving the motor in one direction or the other based on the open or closed state of the relay. See it … [Read more...]
Have a bunch of time on your hands, and about $2,500 sitting around? Why not settle in and build yourself a laser cutter? That's exactly what Buildlog forum member [r691175002] did, and he told us about it in our comments just a few moments ago. Laser cutters can be pretty cost prohibitive depending on what you are thinking of picking up. The cheapest Epilog laser we could find costs $8,000, … [Read more...]
The results are in and the new Open Hardware logo has been selected! After tallying nearly 9,000 votes it has been decided that “Golden Orb” by Macklin Chaffe will now represent the OSHW definition v1.0. Rest assured that despite earlier controversy regarding a few users that had submitted a very large number of duplicate votes (over 3,100 in all), the results have been cleaned up and … [Read more...]
[Gregory] wrote in to share his most recent project, an FPGA clone of the PC Engine/Turbografx 16 console. You may remember him from last year, when we talked about his SEGA Genesis FPGA clone. He just couldn't leave well enough alone, and decided to resurrect yet another 16-bit machine in FPGA form. He has been working on the project for about three months now, but he has been making very … [Read more...]
We here at Hackaday have been pining over these cheap laser cutters on the e-bay. They are, however, just outside of the price range to make them worth ponying up for. [Stephen Hobley] however seems to have taken one for the team in his three part series, and is allowing us to live vicariously through is experiences. Not surprisingly the price point leads to the potential for headaches. The … [Read more...]
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