The ATV sprayer
A proposed spot-sprayer retrofit: Scout makes a map, a person reviews it, and an operator drives the boom over the selected targets. Planned; nothing built.
Keep the operator, add the targeting
The concept adds individually switched nozzles, positioning and a controller to a donor hitch-mounted boom. It uses the same Base and reviewed map as the fleet. The operator drives; a lightbar, speed cue and next-target distance make the display glanceable.
A transferable mount lets the equipment move between suitable vehicles. The lightbar is an accessory any tractor or ATV can take, without an auto-steer installation.
The test comes before the spray
The original concept fires by reviewed map coordinates. Whether those coordinates land accurately enough remains the central open question. Drone-map error, boom attitude, heading, position-update rate and valve timing all need to be measured together. This proposal has not established permission or accuracy for autonomous spot application.
Start by checking the map against targets on the ground, then use dry or water-only tests to establish aim and timing. The mount, nozzle control and pressure regulation are still planned. No working kit or field performance is claimed.
Design basis: ATV-SPRAYER.md and FLEET.md.