Enigmaker

Here's a live demo of the working control code. The software for this and the accelerometer pythag calculations are on github, ...

A piezo buzzer is standing in for the headphones for this demo, but it's pretty straightforward to wire them in. Picking up some spares for that from Rapid on the way to London.

But even with this extra info, no-one's guessed the invention yet!

Accelerometer working

Thanks to Live Fast Code Young getting data out of the ADXL345 was pretty easy. It's overspecified for my purposes, but its precision will be useful for a later project. I expect to have a a fully working demo board by the end of the day.

Fried Fingers

I'm constantly amazed by how robust the Arduino is. I managed to short circuit it for about a minute, and only realised when I burned my finger on the FTDI serial chip. It still works! Maybe worse, it was attached to my laptop at the time so I could have fried the USB power system.

Travelling and testing

I'm on the road today, and taking the tube into tinker.it. Since the website update system is cobbled together from scripts running on my laptop it means site updates will be less frequent. Your tweets are still getting through, but in the worst case (mobile internet is down) take an hour or so to show up on the site. I'm hoping T-Mobile won't notice the bandwidth of re-uploading the site every 10 minutes or so.