PCF8575 I2C IO Expansion Module Great for Arduino, Raspberry Pi and More
£3.79
PCF8575 I2C IO Expansion Module. On board 3.3V level converter circuit, if you don't solder pad of VCC-VDD, the PCF8575 level is 3.3V. Open drain interrupt output pin for input change interruption. My hobby is the electronic and I buy parts in bulk.
