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Unknown Micro
von Alspa T. (alspa)

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Hi,

Can anybody tell me the manufacturer/pinout of the following micro. I am 
trying to convert a thermoelectric wine cooler to a fridge and would 
like to modify the control circuit.

Any help or direction would be welcome.

https://ibb.co/mTUMAw

Cheers,
Alspa

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Re: Unknown Micro
von stefan us (Guest)

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I can't answer your question.

However, there should be some sort of temperature sensor which is the 
more interesting part. In easierst case you can simplay replace that by 
another sensor to shift the temperature range.

You should keep in mind that not all colling devices can be converted to 
a fridge due to limitations of the chemical components. If the colling 
fluid freezes, then it stops working.

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Re: Unknown Micro
von npn (Guest)

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stefan us wrote:
> I can't answer your question.
>
> However, there should be some sort of temperature sensor which is the
> more interesting part. In easierst case you can simplay replace that by
> another sensor to shift the temperature range.
>
> You should keep in mind that not all colling devices can be converted to
> a fridge due to limitations of the chemical components. If the colling
> fluid freezes, then it stops working.

What do you mean "colling devices" and "colling fluid"?
Do you mean "cooling"?

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Re: Unknown Micro
von Alspa T. (alspa)

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Its a thermoelectric cooling deice so no compressor or cooling fluid. It 
has a NTC thermocouple for temperature sensing and a peltier with 
heatsink and fan for heat removal. It seems to apply a PWM to the 
peltier afeter reading the temperature. It can only be set to cool down 
to to 7degrees and I want it to go down to 4 degrees if possible.

Just adjusting or offsetting the the temperature feedback is not an 
answer asI need the front display to still read correct and this would 
be driven by the NTC.

Cheers,
Alspa

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Re: Unknown Micro
von 6a66 (Guest)

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Alspa T. wrote:
> Can anybody tell me the manufacturer/pinout of the following micro.

Hi, can you make a puicture from the bottom to see where VCC/GND go. 
That would give us a clue what it could be.

rgds

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