Panic - Plan C

A project log for Tired Clock

A clock that is very tired, hands hanging down. Until someone approaches it

michael-mllerMichael Möller 11/03/2021 at 21:090 Comments

Time is running out. Only 1 (One) Day left, and other things have to be done, too.

I reveiwed my options and time/effort, and suddnly a 3rd design struck me - with no change to the electronics and a true "flop down" of the hands.

The blue/pink gears have a section without teeth. That will allow the hands on the clock to freely rotate to vertical. The steppers then adance enough for the correct time - then keep turning until they get back to the flop-down-position.

Well, the proof of the pudding lies in the eating. The first printout looks promising. Needed a little tweak of some tolerances, and the tricky bit is fitting som limitswitches for zeroing steppers after powerup (the clock will be turned off at night in he exhibitionhall)

Sorry, I didn't use the correct colour plastic for each part :-)

Now waiting for the 2nd version to 3D print ....