UWB FOLLOW SYSTEM
Build a wagon that follows you.
An open kit — UWB ranging, motor drive, and lidar avoidance — that turns any cart, cooler, or tool trolley into an autonomous follower.
From the Journal
Field notes on making things follow.
Deep, build-in-public writing on UWB positioning, pursuit control, and outdoor obstacle avoidance – the engineering behind a wagon that trails you.
UWB TECH
How UWB makes a wagon follow you
Why centimeter-accurate ultra-wideband ranging beats Bluetooth and cameras for a follower that actually keeps its distance outdoors.
FOLLOW DIY
Building a person-following robot: the follow-me math
The spring-damper pursuit loop behind smooth trailing – target position, follow distance, and why a little lag is the whole point.
OBSTACLE AVOIDANCE
Lidar obstacle avoidance for outdoor followers
A small lidar plus a reactive avoidance layer keeps a follower on your tail without tripping over curbs, dogs, or golf bags.
The Open Kit
Three modules. One follower.
followwagon is an open hardware/software kit. Bolt it on a cart, a cooler, or a tool trolley, and it follows the UWB tag you carry.
01 / RANGING
UWB positioning
UWB modules give centimeter-grade distance to the tag you carry - the same physics the hero animation above is simulating.
02 / DRIVE
Motor & pursuit control
A dual-motor drive train plus a smooth pursuit loop turns position into motion – accelerate, lag, settle, exactly like a real follower should.
03 / AVOIDANCE
Lidar obstacle avoidance
A compact lidar scans the path ahead so the wagon trails you around obstacles instead of into them – built for the outdoors, not just the lab.
Waitlist
Be first to build a follow wagon.
Kits ship in 2027. Join the waitlist now – tell us what your wagon would carry, and we will group you with people building the same thing.
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