Friday, September 21, 2018
The robotics class consists of nine students in grades 11 and 12. A few have prior programming experience and none have robotics experience. This week, I asked them to make their robot autonomously drive around a square. Success looked a little different around the room but for everyone, this project highlighted the downside of navigation-by-dead-reckoning.
Problems they experienced:
- over time, the wheels picked up dirt from the floor and began to slip
- turns that are slightly off the 90° ideal have compounding error
- the front caster wheel doesn’t turn consistently
We had a blast watching each robot run around the square. Here’s a supercut of the robots performing their task (stick around for the end with the whiteboard marker robot):
Next up, we’ll learn to install an ultrasonic sensor and the course will get walls to aid in navigation.