Open-source 3D-printed litter-picking robot MOSS passes first roadside drive test
_Stocko_ · x · 2026-10-26
MOSS, a 3D-printed open-source roadside litter-picking robot, completed its first outdoor drive test.
- Tracks handled tarmac, slopes, dry grass and fresh grass without jamming, described as running like a small bulldozer
- Driven from a gamepad with a direct battery-switch connection, no laptop in the loop
- Onboard log: over 8 minutes of driving, 70+ m per track by encoders; battery dropped from 11.68V to 11.34V
- The weak link is a $20 3S4P pack (nominally 40Ah, clearly not); roughly half the pack is usable before tracks stall in pivots
- Zero stall-guard trips and zero dead pivots; with proper high-capacity cells the estimate is 50 minutes and 430 m per charge
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