Lawnny Five

So what happened?

My very expensive Sabertooth 2x60 shorted out and caught fire. And not just like a bunch of sparks, but literally caught fire to where I started to run and grab my fire extinguisher. But luckily at the last second the fuse tripped and stopped it from getting out of control.

Where did I go wrong?

Well I'm still not 100% sure, but maybe some folks here have an idea. First of all, I don't think it was an issue with the Sabertooth controller, because it happened after I made some changes to wiring, so it's more than likely 100% my fault.

What's next?

Now that I have a mounting system which is able to account for differing wheel widths, I'll probably whip up another mounting frame that allows me to attach to the wheels of my snow blower. I also received my Luxonis OAK-1 camera today! I'm extremely excited to start using its edge computer vision capabilities to track my movements so Lawnny can follow me around yard while carrying heavy stuff. First Stumbles...

Will it crush?

Success: 🟢 After my experiments today, I can say..... it will not! I wasn't really worried about the frame— the 2" receivers are made from 1/4" steel and would probably support a 747. I was mostly worried about the motor axles. The treads are connected directly to the motor axles with no support from a pillow-block on the frame, so the motor axle itself is pretty much taking all the load.

Will it have enough power?

Success: 🟢 Yes. It was able to get the boat moving without any trouble. Buuuuuut there is more to the story below....