Blank REV 3 Boards can be purchased at the Oshpark Store. https://store.oshpark.com/products/compact-marcduino
MARCDUINO Revision v3 Hardware Changes Include
– New layout now with support for the 13 panels in the dome
– Better less crowded header spacing for servos.
– Now supports serial connection of the Magic Panel (using Neil’s Magic Panel firmware update found on Astromech.net)
– The option to run separate power to the servos by changing a jumper and using the 2nd power input terminal.
– all changes packed into the same small footprint as the original 1.5 boards
Please use V3 or newer firmware only on REV 3 boards
MARCDUINO v3 Firmware Changes Include
– The ability to set a any servo to “reverse/normal” instead of all/none
– Support for all 13 panels in the dome
– Magic Panel command support (using Neil’s Magic Panel firmware update)
– Startup sound configuration
– Change default “chatty mode” configuration
– All settings changeable “on the fly” and stored in EEPROM
– Several new default animation sequences added
– Several bug fixes and other cleanup
Firmware support found here. https://astromech.net/forums/showthread.php?40790-MarcDuino-V3-Support-Thread