Two in one

When I was grade 11, I made arduino based obstacle avoidance and Bluetooth controlled robots. Since I made that both of them uses arduino uno separately as well motor driver.  

After a while I started designing PCB and tried to compress both obstacle avoidance and bluetooth controlled robot together. I also get amazing result but my PCB had some error. Now I modified that and it's ready to be printed. 

With this board I can control 2 dc motor, 1 stepper motor, 1 servo motor, 1 ultrasonic sensor and Bluetooth module. It can supply maximum up to 36V but we can get 5V as a output for other components like for sensor, servo and Bluetooth module.

The above shows the first made PCB. Below we can see the modified one.