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PostPosted: Fri Sep 26, 2008 6:30 pm 
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Champion Bird
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Location: Reynella sa
hi Raf
the refrigerant gas in all old fridges is a CFC base, this depletes the ozone layer.
You need to get the fridge de-gassed by someone qualified, also if you do de-gas yourself you you suffer pretty nasty frost burns from the gas as it escapes.
Unless of course you can remove the refrigeration system as a complete unit.
It will then need to be disposed of correctly as well.
Trev

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They say that you cant teach an old dog new tricks, It is a good thing that people aren't dogs!


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PostPosted: Tue Feb 09, 2010 12:49 pm 
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Hatchling
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How about posting the schematics on the electronics or an email address so that we all can obtain them?


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PostPosted: Tue Feb 09, 2010 1:16 pm 
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Great Game
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i will be adding a auto turner to my next incubator i build, i have worked most of it out, but still thinking on it.

regards youri.


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PostPosted: Sat Mar 26, 2011 8:07 am 
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Dapper Duck
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Location: karalee
Very good Design

Could you please go into more detail on how you wired the auto turn mechanism.

IE cut off switches, timmer, and reversing the motor.

Thanks for your time

Leighton


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PostPosted: Sun Mar 27, 2011 9:46 pm 
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Showy Hen
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Location: Canberra
leighton14 wrote:
Very good Design

Could you please go into more detail on how you wired the auto turn mechanism.

IE cut off switches, timmer, and reversing the motor.

Thanks for your time

Leighton


i have a real doubts about someone who cant fathum how this works being able to exicute it if given the 'magic recipe'(even though wiring diagrams to make this work are all over this forum)
perhaps you should buy an incubator instead?


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PostPosted: Fri Apr 01, 2011 8:44 pm 
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Junior Champion Bird
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Location: NSW
leighton14 wrote:
Could you please go into more detail on how you wired the auto turn mechanism.

IE cut off switches, timmer, and reversing the motor.

Thanks for your time

Leighton

Leighton,

these issues were discussed in the thread viewtopic.php?f=8&t=7999774&start=0 which pertained to a different application, however the same ideas were involved.

The change in direction is achieved by switching the polarity of the motor supply, using a configuration that is drawn scematically like an H, hence the name H-Bridge.
In the abovementioned thread, the H-Bridge is achieved using relays. SPDT and DPDT are terms to describe types of relays.

Here's an explantory tutorial H-Bridges: Theory and Practice at http://www.mcmanis.com/chuck/robotics/t ... /h-bridge/
There are lots of others on the net.

The limit switches interrupt the motor circuit when the motionary goals (in each direction) have been achieved.

If you have questions about this so-called "magic recipe", then 'shoot' as the Americans say.


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PostPosted: Mon Apr 04, 2011 9:22 pm 
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Dapper Duck
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Location: karalee
Thankyou.
Thats exactly what im looking for.


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