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PostPosted: Sat Aug 09, 2008 12:32 am 
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Superior Bird
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That is a really neat piece of work. Well done, ... again.

You can get iron on strips for the edges of your melamine boards. :wink:


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PostPosted: Sat Aug 09, 2008 8:34 am 
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Champion Bird
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Thanks Jd and Denis,
I have the iron on strip on the Kitchen counter ready to go on.
Cheers
Trev

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PostPosted: Sat Aug 09, 2008 6:26 pm 
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Old Mother Goose
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I can, but what is the particular detail you want to see?


How does the circular rotisserie motion transfer to the tilt tray? I have my trays and aluminium, but am not sure how to build the 'drive train' :?:

I agree, it looks like a Multiquip!!

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PostPosted: Sat Aug 09, 2008 8:45 pm 
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Old Mother Goose
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I suppose I can make it out from the first lot of photos, how I can see the structure in place it makes more sense.

Nice work. Very proffessional. Im inspired!

Raf

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PostPosted: Sun Aug 10, 2008 8:34 am 
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Champion Bird
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How does the circular rotisserie motion transfer to the tilt tray?
Thats a commercial secret that is not for disclosure.

Nah just joking, You will need a piece of square rod that fits into the motor, mine was 8mm, then you need to make an arm to come of this like a crank arm on a bike, at the end of the arm is a block like a pedal that can spin.
this block slides in a piece of channel that is riveted to the link strap between the 2 trays. Instead of a block you could also use a sealed bearing that fits well in the channel (might be difficult to source).
A timer circuit will turn the motor on at preset time intervals, As the motor turns, the crank arm sweeps around, sliding the block along the channel on the link arm tilting it up and down, at the top and bottom of the travel there is a limit switch to turn off the motor to prevent overun and gradual creep out of phase so to speak.

Clear as mud? It makes sense to me, but remember that I am building this out of my head and I am solving issues as I get to them.

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PostPosted: Tue Aug 12, 2008 8:59 pm 
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Champion Bird
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Quick update,
Lights are set up and the door is on, unit is plugged in and warming up nicely.

I have family visiting from interstate so cant post photos yet, but will soon.

Next step will be the control circuit for the auto turn.

Cheers
Trev

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PostPosted: Wed Aug 13, 2008 2:04 am 
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Superior Bird
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You could send it to me and I will photograph it for you.
I don't have any way of sending it back to you of course.


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PostPosted: Wed Aug 13, 2008 9:08 am 
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Junior Champion Bird
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Is there some reason why auto-turners have the rocking side by side motion? I've noticed that Denis has the turntable type auto-turner set up. I know most commercial incubators do that side by side thing. People who manually turn leave eggs on their side. Is there any advantage having the eggs sit up with the air sac on top? I've just been looking over the net at auto-turner ideas and this one popped up - http://www.efinch.com/incubator.htm - granted it's for finches but it seems like a feasible alternative to the side by side. I guess the worry is that over enthusiastic rolling by the rolling mechanism could result in damaged eggs. It's just that I have a retired microwave oven and I'm thinking of stripping the essential parts to build an incubator.

chookstarter


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PostPosted: Wed Aug 13, 2008 12:36 pm 
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Superior Bird
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The idea of having the normal tilt trays you see comes I think from the big hatcheries. One advantage is the eggs don't actually move so don't bump and break. It is something I think that they found would work on a huge scale.
They tilt from 45 degs over to 45 degs eg. \ . | . /
Ideally they should go a full 180 degs __ . | . __ which is a more natural way. Any difference in hatch rates as they switched from manual turning to auto turning in the commercial sector dissappeared in a few generations.

If your microwave has a rotating plate on the bottom then the TURN X as showed in your link would be my choice. I'd keep the plate set up exactly as is. Let the plate be a rotating floor and the rest of it can be fixed.
In the microwave set up the motor actually turns the rollers beneath the plate. The plate then moves on the rollers. You don't notice it much but the plate actually slips a fair bit but that isn't a bad thing, it stops the motor from stalling and just oscillating. If you were to drive anything directly from one of thoe motors they don't take much to stop.

BE CAREFUL

Microwaves operate at very high voltages,kilovolts. They also have in them huge capacitors which store large amount of energy at this very high voltage. You will need to discharge these capacitors. The capacitors can easily hold enough to kill you even years after being used. If you don't know what I'm talking about, don't go messing around with your microwave.


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PostPosted: Wed Aug 13, 2008 6:21 pm 
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Junior Champion Bird
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Thanks for the advice and warning Denis - I'll keep it in mind.

:D
chookstarter


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PostPosted: Wed Aug 13, 2008 8:00 pm 
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Proud Rooster
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its looks great

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PostPosted: Wed Aug 13, 2008 8:55 pm 
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Champion Bird
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Humph, Denis what a cheek, you just want my commercial secrets!!

As promised the next batch of photos

Image
Image
Image
Image

I still need to do the following
a. edge the door and window opening
b. drill vent holes
c. build the auto turner control circuit
d. fit a latch to the door (its held with masking tape now)

And as a teaser I have the following to show how well the thermostat works
Image
The red line is tracking the temp in the bator, the blue is the set point, so with a swing hi and low of around 0.3 degrees, it is still very close to an average of 37.75.

Regards
Trev

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PostPosted: Wed Aug 13, 2008 9:58 pm 
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Fiesty Fowl
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Quality,mate you could sell them :wink:


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PostPosted: Thu Aug 21, 2008 10:45 pm 
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Champion Bird
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Thanks JD, not that good up close though.

Ok, Next instalment of photos
Image
This is the thermostat (large circuit board) and the auto turn control board (small circuit board) mounted in a electronics box.

Image
And the box sealed up and in place on the bator, it has a switch for the motor.
The switch has ON/OFF and manual turn, there are also 2 led lights, red to show the turner is powered up and timing and green when the turner motor is running.


Next jobs to do before sunday are, drill vent holes. tidy up the door edges and apply the edge strip, fit door latches instead of masking tape.
First test batch of 1/2 doz eggs will go in on sunday.
Regards
Trev

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PostPosted: Thu Aug 21, 2008 11:04 pm 
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Junior Champion Bird
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Trev

Wow - that's great! Question : are you going to hatch them in there? If so, are you removing the yellow trays once 18days hits (to stop turning) and then put in different hatch trays?

cheers
chookstarter


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