Fresh hacks every day
[Jody] wanted to know when his garage door was open. He details his setup which uses a temperature sensor read by an Arduino to send over XBee radio to a computer running a Windows Service. We have seen this twice before, and is noteworthy as a lesson. The XBee radios have the ability to read analog data, relay digital signals, and a lot more. This means the Arduino is completely unnecessary. For … [Read more...]
The human body is an amazing instrument from an engineering standpoint. Replicating just one part of it proves extremely difficult but these athletic legs show a lot of promise. This is the work of a Japanese researcher named [Ryuma Niiyama]. He's been working on the design for years, and is now using pneumatic actuators to mimic the muscles in a human leg. The lower portion of the leg uses a … [Read more...]
Giving a programmer is a great way to get people started in microcontrollers so If you want a cheap simple AVR programmer this might just be what you're looking for. It combines the V-USB firmware, USBtiny software, a few resistors, and some zener diodes. An interesting trick using this programmer is if your trying to program another 8 pin ATtiny you can use some tape to isolate the USB data … [Read more...]
This 3D printer build is a thing of beauty. It prints in ABS plastic on quite a large base. The platform provides all of the X and Y movement, making the gantry stationary except for the Z axis. it is possible to print parts up to about 15"x15" by 13" high. The gray hose snaking down around the right side of the print head is a fume extractor, keeping the air clear around the PID controlled head, … [Read more...]
[Jeff Keyzer] has a new version of the HV Rescue Shield available. This tool allows you to use an Arduino to reset the fuse bits on AVR microcontrollers. This is necessary if you make a mistake and disable the reset pin, or choose the incorrect clock settings (this will probably happen to you at some point). In order to bring the chip back to life you'll need to use High Voltage Programming. The … [Read more...]
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