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A project log for doodle clock #2

robotic writing clock

ekaggrat singh kalsiekaggrat singh kalsi 10/04/2015 at 10:212 Comments

prototype 1:

the first prototype used one motor on the base and one motor mounted on the base of the arm which drove the upper arm by a thin cable . The backlash of both the motors added up making the test not so precise .

prototype 2 :

the second prototype I replaced the cable with a connecting rod as the cable kept slipping but the issue of the backlash remained.

prototype 3:

Discussions

ekaggrat singh kalsi wrote 10/07/2015 at 08:28 point

good idea will try that .another idea i was looking at was to cut gorilla glass from a discarded ipad screen.  But i cant seem to find if it can be cut like regular glas

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Marcus wrote 10/07/2015 at 07:22 point

Do the faces of the solenoid actually need to touch the surface of the board, or could you glue very thin slippy washers on the ends of the solenoids, to reduce scratching. Felt, or mylar or a low friction plastic like PEEK, or something similar.

Marcus

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