Bi-directional I2C Logic level converter
This small module converts logic levels for I2C communication protocols, enabling you to attach a 3.3V module to a 5V project (or vice-versa).
Connection:
AVCC : 5V power
ASCL : 5V SCL
ASDA : 5V SDA
AGND : 5V GND
BVCC : 3V power
BSCL : 3V SCL
BSDA : 3V SDA
BGND : 3V GND
WARNING
