The Gertboard is an add-on GPIO expansion board for the Raspberry Pi computer. It comes with a large variety of components, including buttons, LEDs, A/D and D/A converters, a motor controller, and an Atmel AVR microcontroller.
This is one of the clearest manuals I have seen. Whilst it is extensive, so are the capabilities/facilities of the Gert board. It is wonderful to be back in the world of the 'BBC Micro' and I am looking forward to trying to 'enthuse' the grandchildren. Thank you Gert and the Raspberry Pi team.
This is the User Manual 2.0 which is updated for the assembled Gertboard: http://www.element14.com/community/docs/DOC-51727/l/assembled-gertboard-user-manual-with-schematics?ICID=gertboard-techdoc
Is there an updated user manual available for the latest Gertboard revision dated "21 Oct. 2012"? The user manual has diagrams for revision "11 March 2012", but I suspect that the blue text on the diagram corresponds to the white text on the "21 Oct. 2012" board after taking a quick glance.