14. Radio-controlled Robot

The new challenges

We consider our tank-robot project as a very successful one - our creature can be nicely controlled remotely over Wi-Fi, or navigate around in the autonomous mode avoiding dangers and collisions. Still, there are questions which we could not answer:

• Remote control over the Wi-Fi lags even if you connect your agents directly. Is there any better way to control the robot? Can the Radio Controlling system be the answer?
• Do you really need to purchase expensive factory-made chassis, or there is some better way?
• Could LCD displays be useful for a small robot?
• Is it hard to use Li-Ion battery in the project?

To answer these questions - we decided to build a new robot, which will be a lightweight peer for our tank.

10. Ultrasonic Distance Sensor

How it works

It is time to teach our robot navigating autonomously around the room. Some time ago we installed Ultrasonic Distance Sensor HC-SR04 with the mounting bracket. But up to this point, it was used just as a nice decoration.