Continuous Variable Transmission using Raspberry Pi and Stepper Motor

This project deals with a continuous variable transmission where the gears of a vehicle can be changed automatically based on the terrain. When one drives uphill, the torque needs to be high, and the speed needs to be low so the vehicle should be at a lower gear and vice versa. The project is based on the principals of IOT (Internet of Things). An input device called powertap-pcr (which is fitted on the vehicle) will sense the pressure on the vehicle pedals. If the pressure exceeds a threshold value, it will send a signal to the raspberry pi processor through a Bluetooth device, mounted on the vehicle. The processing code, written in python, will analyse the data and send an output signal to a stepper motor which will change the gears appropriately. A input simulator application was used to simulate the vehicle speed and power values.