This is a library for driving the super cool HDSP2111 through an I2C interface by using the MCP23017 port expander. In other words -- with only 2 wires on an Arduino you can control 2 of these awesome displays. A .png image is included to show the pinouts and hookups. Written by Red Byer www.redstoyland.com. Check license.txt for more information. No warranty, etc, is implied. All text above must be included in any redistribution.
mizraith/mizraith_HDSP2111
Drive two HDSP2111 displays with your Arduino using I2C and the MCP23017.
C++NOASSERTION