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Astrohat - An open hardware RPi Hat for astronomy equipment

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This is very interesting, here's a feature that would be great to have on this amazing board: switchable USB's ports.
I personally use www.yepkit.com/products/ykush and it's excellent.
4 years 2 months ago #47575

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I am not wishing to hijack here. Full respect and consideration to ppapadeas.
Gonzo the great, You should contact the maker and suggest a combined USB 3 switcher and the raspi power button all on a board / hat to fit the raspi. Would have applications beyond astro stuff.


This is very interesting, here's a feature that would be great to have on this amazing board: switchable USB's ports.
I personally use www.yepkit.com/products/ykush and it's excellent.
Last edit: 4 years 2 months ago by Rob.
4 years 2 months ago #47599

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For switchable USBs there is an ongoing development process on RPi4 to make sure you can individually control the existing USBs on RPi4
github.com/raspberrypi/linux/issues/3079

As a general note adding a USB switch on the existing board would be not really feasible since we dont have a way to do that through the RPi hat-pinout. (and adding an extra cable to a USB port kinda defeats the purpose of a "hat")
The following user(s) said Thank You: AstroNerd
4 years 2 months ago #47601

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First board assembled with almost all components (since we have 3 identical double channels, I just soldered one to test it).

Initial tests look good, RPi4 booted OK, i2c devices responding, and channels seem to be switchable. Now I need to write a bit of software to drive the controllable voltage channel and test it :)

Please disregard the fact that the board needs cleaning after the initial assembly ;) (I know.. IPA... but the ultrasonic cleaner is yet to arrive) More updates soon!

The following user(s) said Thank You: Jasem Mutlaq, Jim, Brian, Rolf Meyerhoff, Acapulco Rolf
Last edit: 4 years 2 months ago by Pierros Papadeas.
4 years 2 months ago #47629

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Testing of board version 1.0 is progressing well. I have identified a couple of issues and changes needed to make things easier for testing/debugging and enhance functionality (you can follow development in the repo). In the meantime I am re-evaluating some of the assumptions around the needed functionality (especially for the presence of RTC since we will be having a GPS so...) but would like the input on those from as many possible users as possible.

If you can spare 2 minutes, you could help me by going to this survey link:

>> forms.gle/2hAYnpcskWXV3MWS9
and answer to some quick (choice) questions.

Thanks a lot in advance for everyone's input!
Last edit: 4 years 2 months ago by Pierros Papadeas.
4 years 2 months ago #47876

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Filled in and submitted form for you
Supeb project
4 years 2 months ago #47878

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4 years 2 months ago #47879

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Done.
thank you for your initiative , ppapadeas.
4 years 2 months ago #47890

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Thank you all for replying on the survey!

Here are some quick results from it:



Based on this feedback and fixes from v1.0 I went ahead and released a v1.1 version of Astrohat.

Major changes:
- Removal of RTC since it is expensive to do it right and people should connect a GPS (or get time from Kstars) anyway
- Formal adherence to the RPi HAT specifications to make software development and user experience much easier (EEPROM FTW!)
- Various component fixes on issues identified from v1.0

here is a pic of what v1.1 looks like


As I write this reply, v1.1 PCBs are in production and will soon be in my lab to continue testing.
The following user(s) said Thank You: Brian, Keld Henningsen, Peter Sütterlin, Avocette, ouioui01
4 years 1 month ago #49414
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Hi,
Waiting for that...good job!

Best regards
4 years 1 month ago #49753

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I’m late to this party, but I am quite interested in the progress. I’ve been mulling over RTC vs GPS on my Rock64. I already made an Arduino GPS gadget for my Celestron mount.
4 years 1 week ago #50959

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Good morning, sorry for my english. My name is Ettore and write of Italy, i am interested to HET for my Raspberry PI4.
3 years 10 months ago #53161

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