Sorting by colour with MeArm and TCS34725

Great! I'd love to see how you get on - let me know if you have any questions :)

The disc dispenser is something @JGreen laser cut (along with discs out of some bits of scrap) - I could probably find the drawings for you... The original plan was to use coloured ping-pong balls though, and you could make a great little feed for those out of 2 lengths of bent coat hanger (I've seen the MeArm lift ping-pong balls really well.

Only things I'd say to watch out for are:

• Decent power supply - Even with capacitors, it was really pushing it trying to power the Arm and lights off of USB - we used a bench supply in the end.
  
• The light sensor's great, but it gets thrown off by ambient light a lot. It'd be worth making a little black box with it in, so the only light it sees is what gets reflected from the ball/token/whatever.