Thanks Kevin. I will give it a closer look then to add support for this device to Astroberry DIY
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Hi Kevin, I'm glad you found my
Astroberry AMH
driver inspiring and base for your project. Great work!
I have just purchased Waveshare motor HAT and given it a try with
Astroberry DIY
, which is much more advanced focuser driver than Astroberry AMH.
It supports DRV8834 and A4988 stepper controllers, supports custom GPIO pins, uses kernel native libgpiod instead of bcm2835 or wiringpi, remembers focuser position between runs and provides focuser temperature compensation with DS18B20 sensor.
It uses typical DIR, STEP, SLEEP, M0, M1, M2 pins connected to Raspberry GPIO so I tested it with Waveshare motor HAT. Well, it works but I faced some issues with microstepping and sleeping a motor.
As you probably have much more experience with this device, I've got two questions:
1) It looks like the device does not handle software microstepping without touching hardware i.e. dip-switches. Am I right saying that you cannot control microstepping with software only?
2) Another issue is related to sleeping a stepper motor. Apparently hardware designers did not wired SLEEP pin of DRV8825 to any of Raspberry GPIO. Does ENABLE pin cut off step motor power circuit so it does not get hot?
Clear skies!
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xthestreams wrote: Glad to hear it! BUT remember the first rule of astronomy club, we talk don't about how much our equipment ACTUALLY cost us in public forums just in case our partners find out!
"no really, this guy sold it to me for $100, I couldn't believe it EITHER, besides, the kids don't REALLY need new clothes those old ones fit them just fine"
In such the case I would suggest to write a letter to a partner, put it in sealed envelope and write on the envelope "Open only after I'm gone!"
The letter should say "Honey, DO NOT sell my astronomy equipment for the the price I told you I had paid for it"
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You need to edit line 32 of piface_focuser.cpp file (#define MAX_STEPS 20000) and set your preferred value.
Please note that I do not update this driver anymore because original piface addon is not available anymore.
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