Alex Eames has been busy creating a new video for owners of the excellent RasPiO Duino board. This one takes you through experiments you can do with the PWM pins on the Duino and helps you to create a colour-fading ball display using a ping-pong ball as a diffuser. You can take a look at the video here. You can get hold of the Duino from the rasp.io website or from The Pi Hut for about £12.