Arduino: MCP23008 Library

Introduction   Ever needed a few extra I/O points or need to dedicate some I/O to a peripheral like an LCD or 7 segment LED?  Try the MCP23008.  The MCP23008 is an 8-bit general purpose I/O expansion chip controlled via a I2C interface.  Each of the 8 I/O point can be configured as inputs or […]

Oasis TOFD-5465GGH-B 4 Digit LED with PT6961 Controller

  Introduction The TOFD-5465GGH-B is a 4 digit 7 segment display with a PT6961 LED driver embedded on the back.  I found these on Ebay for 10 for $10 plus shipping.  Ended up being about $1.30 each.  The PT6961 is an LED driver with a SPI interface which means you can talk to it with any […]