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Lonny

I've been captivated lately by robot mowers. I've written off unmanned ground vehicles (UGVs) as much less interesting than drones, because they can't travel as freely and easily. They're much less common than drones, for this reason, I think. While you might have a DJI on your shelf for taking pictures, you're less likely to have a rover. Then I saw a friend's robot mower, and it changed my viewpoint a little bit. It's a platform for autonomy tinkering. It's less stressful and constrained by energy than a drone, and it could potentially have a job! I started poking around on eBay, and immediately saw countless tracked "RC Mowers" that I thought looked very cool. I toyed with the idea for a few months and eventually pulled the trigger when I saw one at a local auction. Enter: Lonny (the robot lawnmower).

Remote controlled mower listing
Picture of Lonny's frame from eBay

The Mower

May 18, 2026

hello everyone and welcome to jackass, I bought one of these and I'm going to stuff an RTK into it and give a Pixhawk something responsible to do

Remote control lawnmower meme image from the thread wrapper
The framing device.

Updates 1-2

May 18, 2026

update 1: remote controlled mower didn't come with a remote
update 2: the commies scraped the labels off the motor drivers

Mower motor driver wiring and label area
Motor drivers, with the useful bits hidden.

Update 3

May 18, 2026

motor drivers take in SBUS. I plugged an ESP into the SBUS and told Codex to start guessing.

guys it's such a good time to be a smug lazy jackass

ESP talking SBUS to the mower.

Update 4

May 19, 2026

vibecoded an SBUS mixer to sanity check the controls. turns out it was actually pretty standard and easy to hand off to the Pixhawk.

SBUS mixer code and control sanity check
SBUS mixer sanity check.

Update 5

May 19, 2026

update 5: 🤠🤠

fought all afternoon with the remote firmware. plugging into the Pixhawk was a breeze. gps works. cheapo telemetry link works. I'm gonna upgrade the telemetry link tomorrow, and drive him to his new home and forget about him until the RTK comes.

Firmware fought back; Pixhawk did not.