I spent several days putting together altimeter, based on decommissioned real instrument. I took out the original mechanics (except gears turning 1000ft/10000ft needles), bellows etc. Installed 720 steps/revolution stepper motor to turn the axle.
Everything was ok, stepper motor was turning the needles as expected, just working fine.
Then I noticed some slack in gears, removed glass, needles and front plate.
Installed one spring I forgot to put back when putting instrument together.
And when I was reinstalling needles... the axle snapped! About 0.2mm diameter steel pin acting as axle broke! I am almost ready to buy altimeter from simkits... $400 or so...
I need a beer. Or three. Crap.
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Kotikutoinen lentokoneohjaamoprojekti. Saattaa jopa joskus valmistuakin. Ehka. Toivottavasti.
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