General Topics: Physics, Engineering, Mechanics, Simple Machines, Electric Energy, Circuits, Electronics, Basic Robotics
Grade Level: 6-8
In this activity, we made battery powered remote controlled cars.
- During the first session, we explained the concepts behind circuitry and how we were applying it, and started assembling the H-bridge circuit we would use to control the car. This required an extended period of time because the circuitry has to be exact or else the car would not operate.
- During the second session, we assembled the bodies of the cars, including assembling the axles out of pencils and straws, assembling the chassis out of cardboard, and attaching the laser-cut wheels.
- During the final session we attached the motors and H-Bridges to the cars and tested them out.
What did we learned?
- Simple Machines: Wheel and Axel;
- Mechanics: Torque, Motion, Gears and Motors
- Basic electronics: Its rules for how it works and why the electricity moves in a circuit.
- For their cars to work, the circuitry and mechanical components had to be done and assembled in a specific way in order for it to work.
Things to keep in mind for future activities:
- Preparedness: kits labeled, with descriptions of the pieces
- We learned that in order to keep the project moving we needed to break the activity into tangible lessons with fun things in between, like decorating the cars.
- Redesign h-circuit to be more user friendly. The old design requires two buttons to be pressed with the same thumb but it should be changed to be pressed with one thumb