The Arduino compatible maroon SHIELD offers an 8×8 LED-matrix-display in conjunction with a microcontroller (Atmel ATmega88A) and two input buttons. Control is easy to use: Text and grafics can simply be send over the serial interface.
The construction kit is Open-Source and Open-Hardware and can be used freely.
There are no bounds to imagination: Lightning effects by night and day, scrolling text, display of values, funny animations etc. Use the shield e.g. with your robot, so that he may tell you something. Maybe he will 'say' that his batteries must be charged ;)
||ATmega88A with 8 kB Flash, 1 kB SRAM, 8 MHz
||2 input buttons
||Arduino compatible, see schematic for pin configuration
||ATmega88A can be reprogrammed by jumper
||53 x 51 x 19 mm (WxLxH)
||Circuit board, programmed ATmega88A with socket, 8×8 LED-matrix-display, 8 transistors, 2 buttons, 14 resistors, 1 capacitor, pin header strips and 1 jumper