[Fran’s] been working on her own version of the Arduino. She calls it CuteUino for obvious reasons. The size of the thing is pretty remarkable, fitting within the outline of an SD card.

To get a LED lighting we should connect its ground pin to the circuit GND and the positive ... the board in your Arduino sketches. The ideal hardware configuration will be the four daisy-chained shift ...

Hathaway spliced these to a ribbon cable with a connector on the end that is friendly to the kinds of wires used as jumpers on electronics breadboards (and are part of most Arduino starter kits).

[Jimmy] at the aptly-named DIY and Digital Railroad channel has several videos on integrating railroad setups with Arduino ... The signal shifts from positive to negative to indicate marks ...

To start, you need to buy an Arduino. It comes pre-assembled or, for those handy with a soldering iron, in kit form. A fully assembled Diecimila board from the excellent Make costs just $35. The ...