I stand corrected.. Thanks for the explanation!

The way the I2C bus works: (1) Each I2C line in the bus has a pull-up resistor to 3.3V. This means that when the device is idle, the Raspberry Pi will read a 'high' signal on the SDA and SCL lines, at 3.3V (2) Devices communicate over the bus by pulling the lines down to ground. (3) There is a maste...