Assignment 4 - IN5590
Trym S.-T. Auren
1) Lawn mower
Robotic lawn mowers are simple mechatronic systems composed by (usually) two wheel motors attached to the each of the rear wheels (the front wheels are usually dummy-wheels), sensors connecting top cover to bottom cover, and a cutting motor. More advanced and recent mowers are also stuffed with PCBs for a more advanced system, providing an easier user interface, controllability and the possibility of distributing software etc to customers over mobile networks. The goal for this project is to build a very simple robotic lawn mower, and see whether there is time to improve upon existing mowers in terms of collision detection/ movement pattern.
2) Goals
- the robot should be autonomous
- learn more CAD and actually build a microelectronic system
3) Sketch
4) Bill of materials
Note: I have all the items except from battery
| Item | Description | Quantity | Fix myself |
|---|---|---|---|
| 1 | DC motor wheels | 2 | yes |
| 2 | DC motor cutter | 1 | yes |
| 3 | Motor driver | 2 | yes |
| 4 | Wheels (2 + 2) | 4 | yes - st?pe? |
| 5 | Arduino + RPi | 1 | yes |
| 6 | 12V battery | 1 | not sure? |
Collision and tilt sensors are currently not decided on. Will handle that as soon as I have a working (driving and cutting) mower.