Slow FPS

[crashza]

Hi Andrew,
Firstly great work on these effects.
This is more of a question so here it is.

I am using your soundmems code in a project of mine and its working flawlessly on a small strip of leds 40 ws2812s (Code is on a esp8266) I get a steady FPS of 400 with this config, When i increase the LED count to 680 I get a low FPS around 10 or so and the animations dont work as they should, Is this very low FPS expected when running so many LED's?

Regards
Trevor

[atuline]

Hi Trevor, Yes, the animation is very slow on a larger amount of LED’s using WS2812’s, which is why a lot of people revert to parallel outputs or use APA102’s, which have a much higher data rate. In general, parallel output with WS2812’s seems to be the way most people get around that. As for calculations, here’s something I just dug up: The datarate should be 400 KHz or 800 KHz (FastLed,h library). Each WS2812B needs 24 bits of data. Thus at 800 KHz/24 bits/LED, you can send 33,333 LEDs worth of data in one second. If you want to update at a 50 Hz rate, then you get 1/50 of that, so 666 LEDs. 100 Levels = 6 LEDs per level. If 400K, then just 3. "The display rotates at 3000 RPM = 50Hz" 3000 rev/minute * 1 minute/60 seconds = 50 revs/sec, or 50 Hz. Ok. Note that the above is the ‘theoretical’ maximum you could possibly get, not counting the overhead of any ESP8266 processing. Hope that helps, Andrew From: Trevor Steyn <notifications@github.com> Sent: August 21, 2019 5:55 AM To: atuline/FastLED-Demos <FastLED-Demos@noreply.github.com> Cc: Subscribed <subscribed@noreply.github.com> Subject: [atuline/FastLED-Demos] Slow FPS (#30) Hi Andrew, Firstly great work on these effects. This is more of a question so here it is. I am using your soundmems code in a project of mine and its working flawlessly on a small strip of leds 40 ws2812s (Code is on a esp8266) I get a steady FPS of 400 with this config, When i increase the LED count to 680 I get a low FPS around 10 or so and the animations dont work as they should, Is this very low FPS expected when running so many LED's? Regards Trevor — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#30?email_source=notifications&email_token=AAT274XGVV63YQNYYVBAO7TQFU3KXA5CNFSM4IOGRJI2YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4HGQFDSQ> , or mute the thread <https://github.com/notifications/unsubscribe-auth/AAT274R4AZ36ZA5CE3BUT4DQFU3KXANCNFSM4IOGRJIQ> . <https://github.com/notifications/beacon/AAT274WZNN3ZP4BJSEJIPLLQFU3KXA5CNFSM4IOGRJI2YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4HGQFDSQ.gif>

[crashza]

Thanks Andrew, I will give that a go thanks for responding