NeoPixel 16 RGB Ring Inconsistencies

[jakowenko]

I have a NeoPixel Ring 16 LED ring that I'm controlling using node-pixel and johnny-five.

On the Uno all the LEDs show solid colors fine. As soon as I tried to do the channel fade (https://github.com/ajfisher/node-pixel/blob/master/examples/channel_fade.js) I noticed that the first pixel doesn't work or sometimes get stuck or lags behind a little.

I then used the exact same code on my Leonardo and it works just fine. The issue described above doesn't happen. I also have uploaded some sample rainbow fading code directly to the Uno and all the LEDs function correctly.

I've attached some images/video to show the issue. I'm new to the Arduino community and appreciate any feedback as to what the issue is.

Uno:

• Image showing channel fade animation with stuck / not working LED. Second image shows I can then set all LEDs to solid color just fine - https://imgur.com/a/yLSeydp
• Video showing simple animation that works fine on the same Uno - https://www.youtube.com/watch?v=8NSoa7DLvRU&feature=youtu.be

Leonardo

• Same setup and code as Uno. Everything works as expected - https://youtu.be/NAr8JF3PnGk

[jakowenko]

Tuning down the FPS does seem to have helped. Though I'm still not sure why the same code on the Uno and Leonardo produced different results.

[ajfisher]

That's really odd behaviour I've never seen before. Interesting that it's seemingly related to the frame rate. What FPS were you using?

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On Mon, Jun 10, 2019, 13:06 jakowenko ***@***.***> wrote: Tuning down the FPS does seem to have helped. Though I'm still not sure why the same code on the Uno and Leonardo produced different results. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#149?email_source=notifications&email_token=AAA5DI6WMZCTSVMGEQL5U5DPZXAJTA5CNFSM4HWNMPO2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODXIZ67Y#issuecomment-500277119>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAA5DIYG7P2TAU6Q2FWN6B3PZXAJTANCNFSM4HWNMPOQ> .