Red flash from the strip when arduino wakes upon PC boot. #24
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Hi there! Thanks for the kind words - I'm glad I was able to help you get up and running. I don't believe there's anything about the color order in my writeup, although as you've discovered it's easy enough to experiment and get it right. Typically I would recommend the setup you have where the device does the channel correction and the color data is sent in RGB order, but at the end of the day whatever works is fine. Sorry to hear about the full brightness red frame, that can't be pleasant. A few questions to try and narrow down the source of the issue:
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Wow appreciate the quick reply. Yep Prismatik set to RGB and corrected in
code to BGR. To answer your questions:
1 Every time.
2) When Prismatik connects. When board is powered on LEDs stay off until
Prismatik connects
3) Clicking the sun icon to turn them off and on it's perfectly fine. I can
however repeat the red flash by stopping and starting Prismatic.
4) Reducing brightness or number of leds has no effect other than reduced
brightness of the flash or just flashing that subset of leds. Reducing # of
LEDs by itself has no noticeable effect on brightness.
5) Increased grab rate up to 1fps, still flashes on Prismatik connect.
Adjusting # of leds in Prismatik does not change flash.
6) Powered by a 5V 10A supply with power injected at both ends of the
strip. Wired the same as in the guide with the same cap and resistor.
…On Sat, Aug 22, 2020 at 11:22 PM Dave Madison ***@***.***> wrote:
Hi there! Thanks for the kind words - I'm glad I was able to help you get
up and running. I don't believe there's anything about the color order in
my writeup, although as you've discovered you it's easy enough to
experiment and get it right. Typically I would recommend the setup you have
where the device does the channel correction and the color data is sent in
RGB order, but at the end of the day whatever works is fine.
Sorry to hear about the full brightness red frame, that can't be pleasant.
A few questions to try and narrow down the source of the issue:
- Does the flash happen every time, or is it intermittent?
- Does the red frame happen when the PC is turned on (i.e. board is
powered) or when Prismatik connects for the first time (i.e. serial data is
sent)?
- If the latter, does turning off the LEDs in Prismatik and then back
on also cause a red flash? Does shutting down Prismatik entirely and
restarting it cause a flash?
- Does the flash change (# of LEDs illuminated, color, intensity,
duration) if you change the number of LEDs in the Arduino code? Does it
change if you set a different max brightness in the Arduino code?
- Does the flash change if you set a different number of LEDs in the
Prismatik code, but don't adjust the number on the Arduino? What about a
different grab rate in Prismatik?
- How are you powering the LEDs? Are you connecting power at multiple
points?
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Thanks for those answers, that's really helpful. Just to be clear - if you keep the number of LEDs in the Arduino code at 120, and you decrease the number of LEDs in the Prismatik setup to 60, all 120 LEDs flash red when Prismatik connects? I'm knee-deep in the end stages of a project at the moment, but I'll try to set aside some time next week to look into this. |
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Hey whenever you can get to it is fine by me. It's not a total dealbreaker
bug. I've halved the brightness overall for my setup and it's a bit less
eye stabbing but so far its just start startup. The setup works great
otherwise. To answer your question, if I reduce the LEDs in Arduino code to
60 and set 120 in Prismatik, just the first 60 in the string flash red when
Prismatic starts. If i set it to 120 in code and 60 in Prismatik actually a
new behavior has arisen when I went to retest this. I use the wizard to
adjust the number of leds and then finishing it following the color temp
adjustment the 60 flash red. When I close then start Prismatik, the first
60 LEDs get stuck red. FPS is at zero. Then when i toggle the sun/moon off
and on the 60 leds do the red flash and then go back to responding
normally. Hope this helps.
…On Sun, Aug 23, 2020 at 2:31 PM Dave Madison ***@***.***> wrote:
Thanks for those answers, that's really helpful. Just to be clear - if you
keep the number of LEDs in the Arduino code at 120, and you decrease the
number of LEDs in the Prismatik setup to 60, all 120 LEDs flash red when
Prismatik connects?
I'm knee-deep in the end stages of a project at the moment, but I'll try
to set aside some time next week to look into this.
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After some testing I've confirmed that this is a bug with Prismatik and not due to the firmware on the Arduino. See psieg/Lightpack#385 for more details. I'd recommend reverting to Prismatik version 5.11.2.19 until the issue is resolved. |
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YEP! That solved it. Thanks for taking the time to help investigate!
…On Wed, Aug 26, 2020 at 4:22 AM Dave Madison ***@***.***> wrote:
After some testing I've confirmed that this is a bug with Prismatik and
not due to the firmware on the Arduino. See psieg/Lightpack#385
<psieg/Lightpack#385> for more details.
I'd recommend reverting to Prismatik version 5.11.2.19
<https://github.com/psieg/Lightpack/releases/tag/5.11.2.19> until the
issue is resolved.
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Hi. First off your write up to make this and your code is awesome. Easy to follow and based on comments on various sections of the build and some comments in the two github repos, I have mine wired up to an 120Hz alienware ultrawide with 120 APA102 LEDS running on an Arduino Pro Micro with a 1,000,000 baud rate able to successfully run them at 15ms. It operates smooth as butter after some confusion on maybe my part as far as the RGB settings and having the LED order reversed in Prismatik. Prismatik had to be set to RGB while BGR was set in arduino to not have R and B swapped. Not sure if I missed that in your write up somewhere.
Anyways. My issue is regarding when the LEDS get woken up from their sleep mode when I turn my PC on and Prismatik connects. The entire strip flash full brightness red for a half second before setting to the correct color. I was hoping there's a way to soften this wakeup transition a bit as its pretty jarring. I'm running on the latest releases of Prismatik and your code. Any other info you need from me let me know and thanks again for making this. Its incredible and far better in my eyes than stuff like Hue or Nanoleaf and at a fraction of the cost.
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