given certain means..
With this you can make test circuits, bash out an idea, show friends cool things that it can do. and so on.
You could probably make it usable with any computer with a serial port (or usb) with the right cable (depending on the board).
This is my entry for the Pocket Sized contest.
For my version I will be using a homebrew board of mine. it has TTL header pins, reset, power LED, digital pins and analogue pins, and a power rail. it has a 9v battery connector on it and the 7805 regulator is protected from power feedback but a diode, so there is no problem with powering it via another 3-5v source. But the board making isn't a part of this ible, so I wont be talking about its construction, (that's here: www.instructables.com/id/Compact-Protoboard-Arduino-type-thing-yea/).
On this board I will have loaded Bitlash ( a bit-bashing program and libs from ( http://bitlash.net/ ) that allows you to control the board and its pins (also its eprom) from any serial terminal interface. This makes it a little easier to try things out directly on the board instead of using the Arduino IDE software, and also means you don't have to carry that too.
Step 1: Kit contents:
Primarily some type or Arduino would be nice:
there are several small boards, bare bones ones, lilly-pad, boarduino.. just to name a few.
or you can make your own Arduino compatible board easily enough, and see how small you can make it. (like i have, though it is a prototype)
Secondly a Breadboard would be handy:
i have seen instructables on how you can make them. Mine is based on one such ible, although I didn't refer to it when I made it.
Also jumper wires for said Breadboard.
for making circuits would be a good thing too. Resistors, capacitors, transistors. LEDs etc.. but they can be carried in a separate container if you need many.. remember to keep it small. this is pocket sized after all ;)
and lastly a storage medium for this.
A Tin or a small plastic box, as long as it fits in your pocket easily. This could easily become a modular thing so try and keep other storage mediums small as well. small plastic tubes do well for components and wires.