We’re always excited to get a new chip or SIM card to interface, but our enthusiasm is often dampened by the prototyping process. Interfacing any chip usually means breadboarding a circuit, writing ...

The MCP23009 is an 8-bit I/O expander with open-drain outputs. This device is compatible with I2C interface and operates at speeds up to 3.4 MHz. It features 8-bit remote bidirectional I/O port, low ...

The TPL0102 is a two channel, linear-taper digital potentiometer with 256 wiper positions. Each potentiometer can be used as a three-terminal potentiometer or as a two-terminal rheostat. The ...

Adafruit has made an I2C interface for four rotary encoders. It comes in the form of a PCB with four footprints that accept one of the most common rotary encoder forms (Bournes PEC11 horizontal style) ...