Good morning
I'm Fabio and I write from Italy. First of all, congratulations for this wonderful project and thank you for making it available.
I built the MyFocuser Bluetooth, I built a pcb that is similar to your schematic (I put two regulators, Lm7808 for arduino and LM7812 for DRV8825)
But I have two problems:
1) if I do goto to a position (N steps) and while the motor is rotating, I turn off the pc, the motor keeps running forever. This happens even if I disconnect the bluetooth. This is a problem because if for any reason the bluetooth were to disconnect during the rotation, the motor keeps running and the focuser can be broken.
2) I noticed that the engine really heats up a lot, even when it does not run.
Hi
When PC is disconnected, I assume controller is still running off 12V. Nothing should have changed, and the focuser should stop once the target position is reached.
Do you have a display connected? If not is it possible to connect one, then you see on the display especially if you have "update lcd when moving" enabled, the controller moving to the target position and stopping.
I have briefy bench tested this here and cannot reproduce the issue. What firmware file are you using? Can you post it here?
Regards
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi Brown
I think I solved my problem. I checked well and there was a small "hair" of wire that touched the pinout in the motor connector, causing a "small" short circuit. Tonight I put the rotation in test and see if it is solved.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Good morning
I'm Fabio and I write from Italy. First of all, congratulations for this wonderful project and thank you for making it available.
I built the MyFocuser Bluetooth, I built a pcb that is similar to your schematic (I put two regulators, Lm7808 for arduino and LM7812 for DRV8825)
But I have two problems:
1) if I do goto to a position (N steps) and while the motor is rotating, I turn off the pc, the motor keeps running forever. This happens even if I disconnect the bluetooth. This is a problem because if for any reason the bluetooth were to disconnect during the rotation, the motor keeps running and the focuser can be broken.
2) I noticed that the engine really heats up a lot, even when it does not run.
Where did I go wrong? Thanks for everything.
Last edit: Fabio 2019-02-14
Hi
When PC is disconnected, I assume controller is still running off 12V. Nothing should have changed, and the focuser should stop once the target position is reached.
Do you have a display connected? If not is it possible to connect one, then you see on the display especially if you have "update lcd when moving" enabled, the controller moving to the target position and stopping.
I have briefy bench tested this here and cannot reproduce the issue. What firmware file are you using? Can you post it here?
Regards
Hi Brown
I think I solved my problem. I checked well and there was a small "hair" of wire that touched the pinout in the motor connector, causing a "small" short circuit. Tonight I put the rotation in test and see if it is solved.