Egg Incubator Turner Motor Circuit :::: Need Help PLEASE

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harith.altaei

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Dear all
Good day

Kindly i need help for a 12V DC circuit for an Egg Incubator Turner Motor, a (Timer) that activate the DC motor for 15 seconds every 4 hours, and learn how to change the time accorcing to change the components if i need to do that.
 
hi,
actually i didn't understand it clearly because i don't have a big experience with the electronic circuits, but i all i need is a timer circuit for a dc motor for the egg turner, (a simple dc motor not a servo motor).

and the circuit should let the motor work one direction every 4 hours for only 10 or 15 seconds.

i will be very thankful if you can help me with that circuit please.
 
hi,
A 555 timer will not be able to to time upto 4 hours.

You will need a 555 for a basic oscillator driving divider IC, the output of the divider would trigger a 555 wired as a Monostable that would give a 10 to 15 second pulse very 4 hours.

Are you able to buy IC's locally or do you have any on your work bench.??
 
my idea was build two circuits, one is a trigger give a pulse every 4 hours and the second circuit when get the pulse give power to the motor for 15 seconds
is that right?

but i don't know how to build the circuits.
 

How precise are the timings? Is 15 Seconds a critical factor for running the motor?

Will you accept " ... activate the DC motor for about 15 seconds over an interval of about 4 hours ..."

Because 15 secs clock from a 555 divided by 7 D flip flops will give you 14400 seconds = 4 hours.

Ramesh
 
Ramussons said:
How precise are the timings? Is 15 Seconds a critical factor for running the motor?

Will you accept " ... activate the DC motor for about 15 seconds over an interval of about 4 hours ..."

Ramesh
Click to expand...

Hi,

thanks for the reply, what do you mean by About 15 seconds and About 4 hours?
 
This should do the trick.

One potentiometer allows adjustment of the timer period from ~0.7hrs to ~7hrs. A second pot adjusts the motor run time from ~ 3sec to~30sec. The FET (M1) type would depend on the stall current draw of the motor but is not critical. It should be an N-channel MOSFET with a low (< 50mΩ) Rds(on) rating and a Vds max rating > 20V. Note that one CD4093 IC contains all four gates U1a-d. Both ICs are static-sensitive so due precautions should be taken when handling them. The FET could be replaced by a relay plus driver transistor.
Depending how your turner mechanism is constructed you may need to add limit switches.
 
harith.altaei said:
sorry for bothering you

did you draw this circuit?
and what is the best software to use please?
Click to expand...

hi,
I drew the circuit and Simulated its operation using LTSpice.

LTSpice is a freeware simulation program from the web.

Also join the free Yahoo LTSpice user group for tutorials and examples.

**broken link removed**

E.
 
ericgibbs said:
hi,
I drew the circuit and Simulated its operation using LTSpice.

LTSpice is a freeware simulation program from the web.

Also join the free Yahoo LTSpice user group for tutorials and examples.

**broken link removed**

E.
Click to expand...

Thanks for your support, i will download it and try the circuit and i hope i wont bother you but i think i will have another questions

thanks
 
I'm trying to draw the circuit in the Circuit Wizard but i am facing a problem with the components and missing pins with the same IC number ?!!
 
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