The relatively simple modification to the first-generation Insight involves a shunt resistor, which lets the computer sense the amount of current being drawn from the hybrid battery and delivered ...
This shunt resistor has a value of 0.1 Ohm on the breakout board used here. I2C wiring connection diagram. I2C protocol timing chart. The I2C protocol uses two pins, SCL (clock) and SDA (data) and ...