TORLO

I felt the clock seamed a little flimsy and added the second leg to give it more stability.

The first prototype used the final motor and a attiny2313 with a clobbered together pcb. The base is just supporting the clock on one side giving it a sense of floating mid air.

One snag i ran into was that the base was too light and the clock would topple. So i added 75x5 mm studs in the base to give it some mass

after a lot of playing around with cams and ratchets i settled on using a simple ratchet and pawn mechanism to push the clock forward every 2 seconds. The balance wheel rebounded and tended to osculate , so i had to give it some time to settle down and thats why the 2 second period..

On hind sight if i have to do it again i would use a heavier balance wheel made out of steel or lead to get the wheel to oscillate slowly.

So ultimately i gave up on the motor oscialating on its self and just used a arduino to pulse the motor every 1 second .

For the this i again used a voice coil but this time the motor is timed using a hall sensor and a arduino. This gave a consistent timing but I could not control the frequency as that was determined by the spring constant and the moment of inertia of the balance wheel. It was very hard to get that right with 3d printed parts..

Next i tried a motor using a hand wound coil ( very clumsy) coil on a steel rod . Again i used a contact breaker.. This motor ran well but was a kind of a over kill for the clock and was very clunky.

the first motor I made was using a hdd voice coil. the motor osculated using a contact breaker using a copper strip and a screw. It was very hard to maintain a constant timing as the contact breaker timing varied. I had no idea of how to calculate the frequency of the balance wheel ( still have a very vague idea ) while making this.. I just fixed the size of the balance wheel on the magnet and the voice coil size.