cross-posted from: https://programming.dev/post/36230046
Let’s be honest: The current generation of robotic lawn mowers sucks. Basically all of these bots drive in a random direction until they hit the border of the lawn, rotate for a randomized duration and repeat. I think we can do better!
Therefore, we have disassembled the cheapest off-the-shelf robotic mower we could find (YardForce Classic 500) and were surprised that the hardware itself is actually quite decent:
- Geared sensored brushless motors for the wheels
- A sensored brushless motor for the mower motor itself
- The whole construction seems robust, waterproof and all in all thought through
- All components are connected using standard connectors, therefore upgrading the hardware is easily possible.
The bottom line is: The bot itself is surprisingly high quality and doesn’t need to be changed at all. We just need some better software in there.
I was just thinking, do these have some technology that they use to avoid running over animals? Based on your comment, it sounds like they don’t.
AFAIK they don’t. Hedgehogs are crepuscular and nocturnal and are therefore particularly at risk as they are not flight animals. Instead, they curl up and rely on the protection of their spines. This often results in serious cuts or severed limbs, which often lead to death. Another problem is that many robotic mower models do not recognise small animals without touching them first. Contrary to the claims of many manufacturers, scientific studies by the Leibnitz Institute for Zoo and Wildlife Research show that the robotic lawnmowers only stopped and turned off after coming into direct contact with the hedgehogs.