Ardufocus components

[ApoEvans]

Hello João,

I want to build the arduino focuser using your code and schematics as a reference.
Can I succeed without using the resistance and thermistor and if not could you please elaborate on their function on the project ?
I do not have a thermistor at hand so, can I substitute thermistor with a resistance ?

Best Regards

Apo

[jbrazio]

Hi Apo,

Their purpose is to report back temperature to the ASCOM driver which in turn is used by the imaging program to (re)focus your imaging train every X degrees delta in temperature.

The original Moonlite has builtin on the focuser firmware an automatic temperature compensation algorithm which does not rely on the imaging software that will automatic move a x amount of steps based on temperature delta.. but this doesn't work that good and I decided not to implement it.

I would say that the system will even work without the components but the best would be to populate the thermistor location with a 10K resistor, it should always report back 25C.

[ApoEvans]

Hi João, I will try it with resistor you suggested. Thank you, Apo Sent from Mail for Windows 10

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