Fresh hacks every day
Here's an interesting tip that can help improve your ability to write assembly code. In an effort to remove the complexity of assembly code for an AVR project [Quinn Dunki] figured out how to use macros when writing AVR code with the GNU toolchain. Anyone using AVR-GCC should keep this in mind if they ever want or need to pound out a project in assembly language. If you look at the code snippet … [Read more...]
This anthropomorphized wood bowl will read Tweets out loud. It was built by [William Lindmeier] as part of his graduate work in the Interactive Telecommunications Program (ITP) at New York University. View the clip after the break to see and hear a list from his Twitter feed read in rather pleasant text-to-speech voices. The electronics involved are rather convoluted. Inside the upturned bowl … [Read more...]
This is a scratch-build meter for measuring the internal resistance of Lithium Polymer cells. [Bleuer Csaba] uses the LiPo cells for RC vehicles and thet take quite a beating from the motors they're supplying. This means that he only gets about 100-200 cycles out of each cell. To figure out where one is in its life cycle you can measure the internal resistance where a rising resistance … [Read more...]
This slmwtch lives up to its name. When the LCD screen is folded back onto the PCB the entire thing comes in at just 2.35mm. That's including a coin-cell battery not shown above. Wow! Part of what makes this possible is the specialized PCB design. [Anders] didn't want to add more thickness than the screen and battery so he make a cutout in the PCB design to accept each component. In this image … [Read more...]
[Adam Outler] and friends have been hard at work unlocking the bootloader of some Verizon Android devices. His most recent adventure involves unlocking the Verizon branded Samsung Galaxy Note II. You can't run Cyanogenmod on a device that has a locked bootloader. This is presumably why it took no time at all for the XDA forum users with Verizon phones to raise enough money to put one of these … [Read more...]
If you live in the Eastern portion of the United States and the skies are clear you can see a student built satellite flashing LEDs in Morse Code today. But don't worry. If you it's cloudy or if you live elsewhere there are several other opportunities to see it in the coming days. This is the Niwaka Fitsat-1. It was developed by students at the [Fukuoka Institute of Technology] and deployed … [Read more...]
[Bill Dudley's] wife wanted to use a couple of different tablets for displaying sheet music. Sure, a proper music stand will have no trouble supporting the weight of the device, but if it's not secured it place you may soon have a broken device. [Bill's] solution was to build this tablet stand out of PVC. The image above doesn't tell the entire story of how he did this. But if you look really … [Read more...]
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