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Dr_Deathweed 01-17-2008 10:45 PM

1 Attachment(s)

Ok, it took every ounce of technical skill I have to come up with this schematic...
Attachment 4089

in theory, would this work? what should I look out for/change? Once again, is there an easier way to do this? (temperature sensor/switch/magic?)

EDIT: oh, that sould read AC to DC..... my bad


Dr_Deathweed 01-18-2008 06:37 PM

1 Attachment(s)

Your correct lustreking, I just went out and got a thermostat to play with and it does run off of 2AAA batteries. I guess where I was getting confused is the statement "runs without batteries on 24V system" so I was trying to find a way to wire it in so I did not have to use/change batteries (not that big a deal i know)

Alright so I guess I dont have to worry about a 24V system anymore, and I do have a computer power supply lying around:
Attachment 4102

So, the questions now are:
1) If I am sticking to a 12V system, which of those wires do I use?
2) Is there a way to get a 6V supply to just solder leads to the battery terminals in the thermostat (still hopeful here \"\" )


Dr_Deathweed 01-24-2008 01:43 AM

3 Attachment(s)

Ok, I played around with the wiring and thermostat, and here is what happened:
Attachment 4182
This is the thermistor in the thermostat, I just desoldered the joints and pulled it out
Attachment 4183
I wired some 24 guage wire into where the thermistor was
Attachment 4184
and attached the thermistor on the other end of the wires. I had to play around with it a bit to get the polarity right so the thermostat would work, but other than this, and having very little soldering experience, this wasn't too bad


Dr_Deathweed 01-24-2008 01:43 AM

3 Attachment(s)

Ok, I played around with the wiring and thermostat, and here is what happened:
Attachment 4182
This is the thermistor in the thermostat, I just desoldered the joints and pulled it out
Attachment 4183
I wired some 24 guage wire into where the thermistor was
Attachment 4184
and attached the thermistor on the other end of the wires. I had to play around with it a bit to get the polarity right so the thermostat would work, but other than this, and having very little soldering experience, this wasn't too bad


Dr_Deathweed 01-24-2008 01:43 AM

3 Attachment(s)

Ok, I played around with the wiring and thermostat, and here is what happened:
Attachment 4182
This is the thermistor in the thermostat, I just desoldered the joints and pulled it out
Attachment 4183
I wired some 24 guage wire into where the thermistor was
Attachment 4184
and attached the thermistor on the other end of the wires. I had to play around with it a bit to get the polarity right so the thermostat would work, but other than this, and having very little soldering experience, this wasn't too bad


Dr_Deathweed 01-24-2008 01:47 AM

2 Attachment(s)

For the power supply, I attached some more wire to the terminals in the thermostat where the batteries go
Attachment 4185
and attached these to the orange 3.3V output and black ground on the computer power supply that I used jas0420's lazy mans modification on
Attachment 4186
yay for learning something new and not burning the place down! Next step, a second thermostat and the fans.


Dr_Deathweed 01-24-2008 01:47 AM

2 Attachment(s)

For the power supply, I attached some more wire to the terminals in the thermostat where the batteries go
Attachment 4185
and attached these to the orange 3.3V output and black ground on the computer power supply that I used jas0420's lazy mans modification on
Attachment 4186
yay for learning something new and not burning the place down! Next step, a second thermostat and the fans.



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