Nunchuck Controlled 3D cube on TV

This is pretty cool – I took the TVout library, the Wiichuck library and wrote a 3D library. Put them all together and got a nunchuck controlled 3D shape on TV. Movement in the nunchuck is detected by the arduino, then the cube is redrawn according to new angle of the controller. At this point…

Analogue Clock on an 8×8 LED

OK so this is tiny but it implements the Bresenham line drawing algorithm and draws a clock… The code is pretty simple. Its running about 100x faster in this video so I can show how it works. [[Schematic soon]] <object width=”425″ height=”344″><param name=”movie” value=”″></param><param name=”allowFullScreen” value=”true”></param><param name=”allowscriptaccess” value=”always”></param><embed src=”″ type=”application/x-shockwave-flash” allowscriptaccess=”always” allowfullscreen=”true” width=”425″ height=”344″></embed></object>

More POV

Got some POV code working…. Problem is sync – not synched at all, so you can see what it says but it has no idea when to start the sequence relative to the user waving it about. We’ll investigate a switch with a weight on as a synch pulse soon. Here’s some pictures of the…

Persistance of Vision

Next up – persistance of vision… Pretty simple hardware – using the same 8 bit shift register from the thermometer project and driving LEDs from the outputs. The clever bit will be the software – but more about that next time. For now, here is the circuit diagram.

What next?

Well, now I’m excited! Can’t decide what to do next…   Persistence of Vision, Lego Motors, Robot Arms… who knows? Maybe I’ll see what the kids say – this is really about teaching them stuff after all :o)

Thermometer and Clock

So, for our first trick we thought we’d try and conjour up a thermometer, and then we added a clock as well – just for good measure. Pretty much all the parts came from Cool Components or Maplin. I got a cheap 2 line display on sale which was the starting point, then wondered what…