Next steps shows how the master (Arduino) reads from the slave I2C device. Wire.requestFrom(address, 1) command expects to receive 1 byte of data from the TC74 sensor. Wire.available() waits for data ...

Step-by-step guide on designing and programming a custom I2C slave sensor device using Arduino. More for You. Trump overpowers Musk's attacks on mega tax bill with blizzard of orders.

In principle, such backpacks are built aorund PCF8574 (from NXP) which is a general purpose bidirectional 8 bit I/O port expander that uses the I2C protocol. The PCF8574 is a silicon CMOS circuit ...

← Arduino Hits The Battlefield — For Real. DIY Bolt Together CNC Router →. 4 thoughts on “ Working With I2C Port Expanders ” KanchoBlindside says: June 7, 2011 at 9:45 am Great ...