Speedometer: Schematic

Final Lab circuit

The schematic used for the speedometer is rather simple. It includes a TWI/I2C setup and the connections shown graphically above. The connection between the Accelerometer and the A3BU’s J1 header is very straightforward. Ground connects to ground, vcc connects to vcc, sda to sda, scl to scl, and two 4.7K ohm resistors connecting VCC and sda/scl.