The timer keeps running for whatever time its set to, say 1 hour. When the tray reaches the CW limit, it shuts off the motor. And, power is applied to the timer during this time.
When power is first applied, power flows in through pin 7, through the N/C contacts of the relay, out pin 1, then through the N/C contact of the limit switch at the clockwise extreme, through the motor, back to pin 3, through the relay N/C contact, out pin 9 and back to the battery.ĭuring this time, the motor is connected so it travels towards the CW extreme. The limits switches are external to the relay, obviously, wired back to the relay pins.Ĭonsider the case where the tray is somewhere between the two limits. In this case, the DPDT relay is actually the timer. The circuit is the classic motor reversing circuit using a DPDT (double pole, double throw) relay. Its a great project on a world scale and needs to be discussed. To the powers that be, thanks for leaving this thread intact in, arguably, the wrong forum. If so how do i go about it, do i place the switches between pins 4 and 3 and 1 and 6? I see from the amperite site that the contacts between 1 and 7 and 3 and 9 are N/C and those between 4 and 7 and 6 and 9 are N/O.well what i am trying to get at is that in your scematic you are showing the contact states within the timer, and then saying to add N/C switches (limit) at my extreems? is this true? Now onto that issue.Stamptrol (or others) the schematic seems simple enough (and thankyou for that!) but could you clarify what is happening near the 4,7,1, 6,9,3. However i dont wish to seem ungratefull but i now am of a mind to follow stamptrol's idea, only to save space on the stamp to carry out other routines like an open door alarm and auto water top ups.
#Incubator egg turner timer code
Thank you to everyone for their input, it has given me alot to think about ( i dont know if that is a good thing or not!).Īllanlane5, thank you for the could work with a little tweeking as the exact timming of the turner is not critical, and i could tweek the code a little to get closer to the hour. The following is a schematic that would work continuously, but does anyone have a suggestion as to how i could control this with the stamp module and include a timming aspect. I want to control a motor (more than likely dc) that rotates in one direction untill a microswitch is pressed, then stop and wait an hour before rotating in the opposite direction untill another switch is pressed, then stop an hour before going back and so on. Now the part that i am stuck on is an egg turner.i know the principle that i want to use but therein lies the difficulty.
I have the control of the tempuature and humidity sorted out using a combined probe and solid state relays.
#Incubator egg turner timer free
I am trying to develop a microcontroler to control an incubator, which my wife and i would like to set up in a small village for locals to use free of charge when we go in july to kenya. Hi there, i have done a fair bit of trawling through the site and cant seem to find an answer, so here i go.
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