Palm Pre Mojo SDK leaked

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Pre Insiders has reported that the Pre’s Mojo SDK has been leaked to the internet. Palm was planning an early access program, eventually releasing the SDK by the end of the summer, but this leak has accelerated the process. They are posting several download links, including torrents, but they warn developers to use the tools wisely.

Related: Palm Pre teardown

[via techmeme]

Motöri the Plotter

The Motori plotter is fast and high precision. One image shows that it is drawing lines at .5mm. Like others in the flickr set, we keep thinking of how we could apply this to PCB creation. Great job [svofski]. If you want one that’s not as precise, but might have a much cooler drawing mechanism, you might want to check out the lego arm plotter we posted back in May.

AVR RFID tag

attiny85-rfid

[pc486] sent in his hack that uses an ATtiny85 to act like an EM4102, a chip used for RFID tags. Minimally, all that is needed is the AVR and a coil, but he recommends some filtering capacitors. Depending on the size of the coil, different frequencies and ranges can be achieved. This project actually includes several hacks, such as using the coil for not only power, but a clock signal. The coil is actually able to power the chip without being connected to the power pins due to clamping diodes on the connected pins. The firmware is short but available on subversion.

Related: Scratch-built RFID tags