I have a commercial pet feeder but is nor reliable. Its rotary drum gets stuck very often, and after 3 factory repairs I gave up.
I want to build one based on a gravity discharge tube about 3 inch diameter closed by a metallic door held up by a spring.
A solenoid triggered once a day will open the door for some 6 to 8 seconds and let the food drop.
Accuracy is not a main issue. Reliability is.
I have 48 VDC source, since it is for feeding a defense dog that lives in a cabin in a no line area. Of course also 12 VDC is available.
Question 1: I feel that a simple 555 circuitry will do this, but where to get the "starting up inspiration"
Question 2: Accuracy of the cloch will need an external quartz or not ?
Thanks a lot,
Horacio
I want to build one based on a gravity discharge tube about 3 inch diameter closed by a metallic door held up by a spring.
A solenoid triggered once a day will open the door for some 6 to 8 seconds and let the food drop.
Accuracy is not a main issue. Reliability is.
I have 48 VDC source, since it is for feeding a defense dog that lives in a cabin in a no line area. Of course also 12 VDC is available.
Question 1: I feel that a simple 555 circuitry will do this, but where to get the "starting up inspiration"
Question 2: Accuracy of the cloch will need an external quartz or not ?
Thanks a lot,
Horacio