Along with some kind of Z-axis calibration to validate height (GPS or barometer ... | Hacker News

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		ninju on March 21, 2019 \| parent \| context \| favorite \| on: Sprayprinter – A graffiti robot startup Along with some kind of Z-axis calibration to validate height (GPS or barometer based) since drift due to slippage or weight changes is quite possible

haihaibye on March 21, 2019 | [–]

Or markers on the wires.

SiftedTech on March 21, 2019 | [–]

Thanks both!

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