SunFounder Full Color RGB LED Matrix Driver Shield + RGB Matrix Screen for Arduino A simplified version of Colordruino: functions just like the Colorduino, except that it's not supporting cascading; code completely compatible. Just plug the module onto a Uno board (Arduino, SunFounder, or other compatibles) for use Use DM163 as the driver chip on the driver shield; just plug the 8x8 LED dot matrix screen on the shield for use; support at most 256 x 256 x 256 = 16,777,216 colors Support display of both the three primary colors, red, green, blue, separately and their mixed colors Module size: 64.3 x 35.0 x 26.5mmWorking current: 300mA; operating temperature range: -1050 Working voltage: 5V DC; PCB size: 6.0 x 6.0 cm. For more info, please refer to http://wiki.sunfounder.cc/index.php?title=Full_Color_RGB_LED_Matrix_Driver_Shield_%2B_RGB_Matrix_Screen