Adafruit Matrix Portal - Moon Clock error

[lemonkey]

Using the latest version of CircuitPython (10.0.3) and the latest version of the code.py from the main branch, I'm seeing an error "AttributeError: 'MoonData' object has no attribute 'end_utc_seconds' attributed to this line of code:

https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/Matrix_Portal/Matrix_Portal_Moon_Clock/code.py#L335

Fetching from the weatherapi via a browser (https://api.met.no/weatherapi/sunrise/3.0/moon...) shows a successful response. Perhaps the structure of the data has changed recently?

This error started happening this morning for me.

[dhalbert]

Also noted in https://forums.adafruit.com/viewtopic.php?t=221085.

We have two different moon phase clocks:
https://github.com/adafruit/Adafruit_Learning_System_Guides/tree/main/Matrix_Portal/Matrix_Portal_Moon_Clock
https://github.com/adafruit/Adafruit_Learning_System_Guides/blob/main/QT_Py/NeoPixel_Moon_Phase_Clock

They are using different API's for the moon phase. #3143 proposed a computational approach that does not use an external API: it only needs a time. Perhaps we should switch to that, since we frequently are chasing API's.

FYI @BlitzCityDIY

[lemonkey]

I did come across this stackoverflow discussion a while back https://stackoverflow.com/questions/2526815/moon-lunar-phase-algorithm.

https://rhodesmill.org/skyfield/ seems to be well recommended.

[dwetchells]

I have two different versions of the moon phase clock. Both failed to retrieve the json files. I was seeing URL 509 errors. I think this a SSL certificate issue with the MatrixPortal Network library. Using old Certs. If you have a ESP32-S3 board instead of M4 you can get the wifi library working to a point. Sent from Mars

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________________________________ From: Ari Braginsky ***@***.***> Sent: Tuesday, November 11, 2025 5:31:24 PM To: adafruit/Adafruit_Learning_System_Guides ***@***.***> Cc: Subscribed ***@***.***> Subject: Re: [adafruit/Adafruit_Learning_System_Guides] Adafruit Matrix Portal - Moon Clock error (Issue #3160) [https://avatars.githubusercontent.com/u/53710?s=20&v=4]lemonkey left a comment (adafruit/Adafruit_Learning_System_Guides#3160)<#3160 (comment)> I did come across this stackoverflow discussion a while back https://stackoverflow.com/questions/2526815/moon-lunar-phase-algorithm — Reply to this email directly, view it on GitHub<#3160 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AJTJEZDFYDYMH2FRSTZCIYT34J5VZAVCNFSM6AAAAACLXLK64SVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTKMJZGMYTSOBSGE>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[dhalbert]

If this is a cert error then you can use a more recent list of root certs by updating the firmware on the AirLift processor on the Matirx Portal M4: https://learn.adafruit.com/adafruit-matrixportal-m4/updating-esp32-firmware. On the Matrix Portal S3 the root cert list is in CircuitPython. 10.x.x has a full and recent root cert list.

[dhalbert]

HTTP 509 errors are "Bandwith Limit Exceeded".

[lemonkey]

If this is a cert error then you can use a more recent list of root certs by updating the firmware on the AirLift processor on the Matirx Portal M4: https://learn.adafruit.com/adafruit-matrixportal-m4/updating-esp32-firmware. On the Matrix Portal S3 the root cert list is in CircuitPython. 10.x.x has a full and recent root cert list.

I am using CircuitPython v10.0.3 btw.

[dhalbert]

I am using CircuitPython v10.0.3 btw.

Which board are you using?

[lemonkey]

I am using CircuitPython v10.0.3 btw.

Which board are you using?

The Matrix Portal https://www.adafruit.com/product/4745

[dwetchells]

Hi all i am using the Esp32-s3. The moment the matrixportal moon phase program reaches the fetch command it spits out a 509 error message from weather api. I am using cp 10.0.3 . Are you say everything is working with the learn guide code sample? Sent from Mars

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________________________________ From: Ari Braginsky ***@***.***> Sent: Wednesday, November 12, 2025 10:54:40 AM To: adafruit/Adafruit_Learning_System_Guides ***@***.***> Cc: ThinMan ***@***.***>; Comment ***@***.***> Subject: Re: [adafruit/Adafruit_Learning_System_Guides] Adafruit Matrix Portal - Moon Clock error (Issue #3160) [https://avatars.githubusercontent.com/u/53710?s=20&v=4]lemonkey left a comment (adafruit/Adafruit_Learning_System_Guides#3160)<#3160 (comment)> I am using CircuitPython v10.0.3 btw. Which board are you using? The Matrix Portal https://www.adafruit.com/product/4745 — Reply to this email directly, view it on GitHub<#3160 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AJTJEZF3BLBPJAYED47RXWT34NX6BAVCNFSM6AAAAACLXLK64SVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTKMRTGE3TCNBTHE>. You are receiving this because you commented.Message ID: ***@***.***>