Alex Eames recently ran a successful Kickstarter for the RasPiO GPIO Ruler (pictured above). The ruler is a brilliant crib-sheet for people who want to use the GPIO pins of the Raspberry Pi but can never remember how to get started. When I did my mini-review of a pre-production sample, I gave it 10/10. It’s one of those things that ‘just works’.

Following the completion of the Kickstarter, which shipped three weeks early, Alex is now selling the rulers to the general public. You can read his launch announcement here and get hold of a ruler by visiting his website. They cost £5.50 each (including global shipping) and there are discounts available for multiple units.

Alex has done a nice little launch video which you can see below: