Steering a car using hand gestures

I made a prototype to identify hand gestures and used them to steer a custom toy car. To recognize hand gestures, I attached a colour tag in my forefinger, which my camera was tracking. I wrote a code in MATLAB to monitor the colour tag and interfaced and I interfaced it with an Arduino. The MATLAB code provided instructions to the Arduino. In turn, the Arduino controlled the motors and steered the car accordingly. I exhibited my prototype during IIT Roorkee's annual hobby fest and received 1st prize and accolades from the audience.