This page is for compiling the huge mess that is the Astromech Builders technical knowledge for building R2-D2 droids.
MarcDuino - MarcDuino is a custom built Arduino board (using the Atmel ATMega 328P 28 DIP), with two used as a master/slave pair, that controls the animatronics of an R2-D2 using an iPhone app. It currently controls 10 dome panels, an "MP3 Trigger" sound board, dome "Teeces" lights and holoprojectors light and movements, and I2C gizmos you can add-in yourself. Link
AstroCAN
AstroCAN Wiring Diagram on Github
Incredible R2D2 Vocalizer https://humancyborgrelations.com/r2d2/