The bot's frame is made up of angle iron and square steel tubing that I had left over from my riding e-mower project and my metal gate. I try to get as much of my metal as I can from a local scrapper (the construction sign included).
This part of the frame is welded together.

For the wheels I'm using various "hoverboard" hub motors. They're all metal rotor shells. I have tested the RPM, and they're all very close within the same RPM at 24v (they're not all the same brand). 1 of theses motors came from my local scrapper, the rest I got from a neighbor.
After a month of seeing a hoverboard in a ditch, I rang their doorbell and offered to buy it for $10, they gave me 2 more (1 metal and 1 plastic hub) lol.

I'm using a headway "Super Beast" battery (from batteryhookup). It's a 4S (24v) ~45ah, lifepo4 battery pack that should be at least capable of 200a of current.

The battery is mated to a 200a Daly BMS with bluetooth and supposedly has a cooling fan.

I'm catching the RC signals with a 6 channel RC receiver.

The Arduino reads the digital RC signal and emits a regular PWM signal to a DAC (digital to analog converter).
The DAC puts out a 0-5v analog signal (though capable of up to 10v).

I'm using 24v ebike/escooter sensored 3 phase controllers. They read the 0-5v DAC signal.
The benefit of these motors is they're capable of  ~10-20ft lbs of torque per motor.

I'll probably fiberglass the outer protective shell of the bot. I might dangerously try to use my leftover countertop epoxy for this lol.

Originally this was going to just be a mower. I stretched the frame to try to squeeze that Fiskars reel mower into it.
Now I'm just going to make the reel mower an attachment that hangs off the front or back of the bot.

Doing so, I'm going to leave a 12-24v accessory wire near the front and/or rear of the bot that I can plug up a reel, a lawn fertilizer, thatcher, or whatever.