Originally Posted by oliverb

Yes the cct board can be removed or left in it's up to you.
The diagram for the 4093 is at the top of the page just arrange your light sensors to o/p a 2sec pulse.

Originally Posted by oliverb

The 4093 will everse the polarity to the drive coil twice for every 2 sec pulse giving your 1 sec drive.

Originally Posted by oliverb

I am building a new slave clock for my master clock (see under projects mater clock woth 7 segment dislay).

I have an old 12" dial clock case and plan to use a 30 sec clock motor for the hours and mins and 2 modified quartz clock motors for the seconds and date displays. I have enclosed a mock up picture of how the clock should look.

I have built a driver for the quartz clock motors using a 2 sec pulse from my master and a 4093 chip I had spare.

The cct works fine and has driven the quartz clock motor perfectly over the last couple of days.
I am not sure how to protect the 4093 chip from back emf from the motor coils. I would normally use reverse diodes across the motors but as the cct reverses polarity to the motors every second I don't think ths will work.

Any ideas?
Thanks.
Brett.