Official android open accessory development kit – it’s an Arduino

android shield

A new development kit for android was unveiled at the Google I/O 2011 developer conference that officially supports the Arduino. It looks like Google took a cue from Circuits@Home, because the interesting part of this dev kit is the fact that the shield can be put into USB Host mode. That's great for phones and tablets that can't act as a USB host themselves. Google will also release the APIs … [Read more...]

Machining replacement parts with hand tools

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Jeff is a huge music fan, and like many of us likes old technology, so it seemed a bit silly (to him) that he did not have a turn table. His dad had a spare in the basement. A neat old Braun model from the 1970's that was broken. Opening the unit up he found that part of the arm mechanism was broken, and thanks to the age of the turntable and the wonders of mass production chances of finding a … [Read more...]

Arduino magnetic core memory shield

mag_core_memory

Magnetic core memory turns 60 years old today, and as a tribute [Ben North and Oliver Nash] have created a 32-bit magnetic core memory board for the Arduino. Magnetic core memory was used from the 1950s through the 1970s, and provided a non-volatile means for storing data, as each magnetic core retained its orientation, even when the power was cut. While it sounds a lot like a modern hard … [Read more...]