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jbrazio / ardufocus

:telescope: The most accurate Open Source focus controller
https://ardufocus.com
GNU General Public License v3.0
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Ardufocus components #21

Closed ApoEvans closed 3 years ago

ApoEvans commented 3 years ago

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 commented 3 years ago

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 commented 3 years ago

Hi João, I will try it with resistor you suggested. Thank you, Apo

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stale[bot] commented 3 years ago

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.