Total novice here with a clock idea I’m looking for help with.

I want to take a signal from gap in an opaque disk mounted on the seconds hand shaft of a battery operated quartz clock. Using a slot IR I want this to signal a small 12vdc motor to run for 1 rotation, using another slot IR to stop the rotation of the motor. The motor would be geared to produce a 1 minute advance on a 'minute' disc.

Once every full rotation of the minute disc I want another slot IR to signal another small DC motor to rotate an 'hour' disc and have it stop by reading another slot IR.

Leaning on my very limited knowledge I see this would involve transistors and diodes and wondered if anyone could help with the circuit and values for the components ? There's probably a better way to accomplish this but I'd rather not involve arduino or code for simplicities sake.

Cheers
Phil

 

Are logic gates allowed?

 

Are logic gates allowed?

Hoping to keep it really simple.

 

You need to define "simple" I think.
Are you looking at purely mechanical control, transistor or basic logic ICs?
For my mind, "simple" is to use an Arduino.
Really nice and elegant would be to have mechanical logic operated switches but that is way from simple to me.
A switch that is operated on the falling edge if the input and starts a motor that runs one turn (geared down) much like the windscreen wiper home switching. Each motor is the same, just driven from the previous one. The trick is to have the motor start on just the edge. pretty easy in logic or code but not so in mechanical, unless you are good at making such things.

 

Mechanics is my specialty ! Electronics, not so much. I'm reworking the clock in the link below to have both minutes and hours rings. The original version is driven by an AC synchronous motor, moving continually obviously, showing only hours. I have limited space to work with in the spire so I'd hoped to avoid an Arduino board and have a Transistor/Slot IR based set up.

The thought in my head is that the signal IR would provide enough run time for the motor IR to take over the supply. If that makes sense ?

https://www.philabernethy.com/aspire

 

The trick is to have the motors run just the rev they need. no more or less. So just going on time will not be enough as the motor speeds will vary.

 

just to be clear, I wouldn't be using the DC motors for timekeeping, they would only be used to advance the hour and minute rings. The time signal would be provided by a quartz mechanism via a gap in a disk mounted on seconds shaft and read by a slot IR.