DIY Remote Controlled Lawn Mower
@afromaan and @Kotux-SPS´s project
FinalCutter is a DIY RC lawn mower with skid steering and welded frame. Our plan is to make fully functional, open-source and not too expensive and hard to make at home RC mower.
Our first goal is to make it work, at least. So it can drive, cut and somehow work for us.
And the second goal is to customizate it to its best configuration possible (still with our plans on mind).
That means:
- Air Suspension
- Controlling Via Camera From Our Living Room
- Autonomous Mode (with nVidia its maybe early future for us too?)
- Gasoline engine for cutting and charging
- 4 wheel drive motors
- FlySky remote control
- Raspberry Pi - motors controller
- Battery charged via alternator
- 👨🏭 Frame: DIY welded steel frame
- ⚙️ Engine: from some old Husqvarna mower
- ⚙️ Drive motors: 4x MY1016Z 12V 250W
- 👨🏭 Gas Tank: DIY welded steel gas tank (capacity 5-10l)
- 👨🏭 Wheels: DIY welded steel wheels (modified for mud with small spikes for better grid)
- ⚡ Alternator: some old car functional alternator
- ⚡ Battery: VARTA SILVER Dynamic 54Ah, 12V, C30
- ⚡ Electronics between battery and alternator: VEVOR SDC-20A
- 💻 Main controller: Raspberry Pi 4B 4GB
- 💻 Remote controller: Flysky T6 (?)
🚧 Work in progress 🚧
In september we have started renovating the old Briggs & Stratton engine. At first it started and kept running, on second start it unfortunately died, so we 3D modeled and printed new pipe (carburetor to engine pipe). It fitted well but because of one old fragment that felt inside the combustion chamber - we didn´t know about it - and so the engine was declared dead.
After some rest @Kotux-SPS brought "new" old engine to our garage. It´s now resting here and waiting for us to finish the frame and electronics, after that we can mount it onto the FinalCutter body.
Finding best option for electric motors.
Now we are working on both the 3D model of frame and the code for RPI 4B.
Because we want it to take up to 45° slope, we´re making sure every component will sit well and we have also been stress testing each one so it won´t break quickly.
Now we´re gonna lock in for designing working frame.
You can now check renders of our "almost" finished 3D model in files above.
Gonna finish the model and start with welding.
- YOUTUBE. The first idea, wheels and motors [online]. YouTube Shorts [cit. 2026-01-05]. Available at: https://www.youtube.com/shorts/JR76kVJ1_AE
- SCAG Power Equipment. RC Extreme Slope Mower [online]. Scag [cit. 2026-01-05]. Available at: https://www.scag.com/product/remote-mowers/rc-extreme-slope-mower/
- SIMSCALE GmbH. SimScale – cloud-based engineering simulation [online]. SimScale [cit. 2026-01-05]. Available at: https://www.simscale.com/
- GOOGLE. DIY materials to also use [online]. Google Drive [cit. 2026-01-05]. Available at: https://drive.google.com/drive/folders/1nID4fEp9m7udsZuqDUJPav6UimpGLi--
- YOUTUBE. Controlling option [online]. YouTube Shorts [cit. 2026-01-05]. Available at: https://www.youtube.com/shorts/T3sLamjyjxg
- YOUTUBE. Something slightly different but uses the same remote controller [online]. YouTube [cit. 2026-01-05]. Available at: https://www.youtube.com/watch?v=JyIkXSQGX_8
- YOUTUBE. How to not to do it [online]. YouTube [cit. 2026-01-05]. Available at: https://www.youtube.com/watch?v=9AKtnBxLvh8