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  • Aug 12 18:34
    shlomozippel opened #1424
  • Aug 12 08:23
    anupam-dubey closed #1423
  • Aug 12 08:23
    anupam-dubey commented #1423
  • Aug 12 08:21
    anupam-dubey opened #1423
  • Aug 10 22:13
    marmilicious commented #581
  • Aug 10 20:05
    Sagar73594 commented #581
  • Aug 10 18:42
    zackees commented #1422
  • Aug 10 15:21
    davorvr opened #1422
  • Aug 10 02:37
    smurphyUSI commented #1421
  • Aug 10 01:20
    MikeGarber commented #1421
  • Aug 09 20:11
    smurphyUSI commented #1421
  • Aug 09 20:10
    smurphyUSI commented #1421
  • Aug 09 20:10
    smurphyUSI commented #1421
  • Aug 09 20:09
    smurphyUSI commented #1421
  • Aug 09 19:11
    MikeGarber commented #1421
  • Aug 09 18:50
    zackees commented #1421
  • Aug 09 18:50
    zackees commented #1421
  • Aug 09 12:49
    MikeGarber opened #1421
  • Aug 08 00:30
    josephreisinger commented #1383
  • Aug 08 00:24
    josephreisinger commented #1383
Daniel Haber
@Daniel__Haber_twitter
Thanks Fred! I knew it didn't seem right. So the current through the ground will increase, and when you say there is "voltage drop over the ground wire," does that mean it goes up in voltage, to like 1V, lowering the effective voltage across the strip?
Fred Larsen
@fredilarsen
Yes, that is right, the voltage on the unconnected side of the ground wire will increase, compared to the connected side.
Daniel Haber
@Daniel__Haber_twitter
interesting! Thanks again!
Moritz
@moritzuehling
In my recent installation, I notice it when I "unplug" one of the ground injection points by simply observing the LED brightness
Anyway, regarding:
Marc Miller
@marmilicious
@moritzuehling I would think so. What are you receiving serial data from?
John Backus
@backus

Hi everyone. I've got four esp32s driving separate LED strips, laid out to look like one display (each strip runs up the corner of a wall and then along the ceilings). I'm using painlessMesh to network them, which also gives me a common clock. Common clock means I can sync a common timebase on all of the devices, so if I do

fadeToBlackBy(leds, NUM_LEDS, 20);
leds[scale16(beat16(10, gTimebase), NUM_LEDS - 1)] = CRGB::Blue;

on each, I basically have pixel perfect synchronization on each strip

So, this works, but it's kinda awkward to pass gTimebase all the way down to every beat function I depend on. I'm curious what people think of the idea of a FastLED.setTimebase(...); function for this use case. Global timebase would still be 0 by default, so no breaking changes, but would be great for a use case like this
Marc Miller
@marmilicious
@backus I like the idea. Can you explain it a tiny bit more?
Tim
@m00bh000
Hi. Anyone know if support for ucs
Hi. Anyone know if support for ucs2904 is on the cards anytime soon? Thanks Tim
John Backus
@backus
Hey @marmilicious I'd be happy to. What would you like more context on, specifically?
Marc Miller
@marmilicious
@backus I'm just trying to clearly understand how you would envision it working. It's an interesting idea and leads to the question of if it could be a library thing or something better left to rolling yourself. Consider opening a new issue (I know it's not an issue but rather an interesting functionality suggestion) on github with the info you've provided so far and an example/sudo example. Could also post the idea to FastLED reddit group to see what others might think/suggest.
John Backus
@backus
@marmilicious gotcha. Ok, I'll look into doing that. Thanks for the input
philippe488
@philippe488
Hello,
Using fastled with teensy 4.0, mocing fron teensy lc. Wanted to know if it was compatible with it (i2c): I had no problem on Teensy lc, but with teensy 4.0, i2c gets plenty of transmission error when .show(). Any idea ? Regards
Marc Miller
@marmilicious
@philippe488 See if this helps. If not post your question on the Reddit FastLED group with details about your setup. https://www.reddit.com/r/FastLED/comments/d9z2os/teensy_40_and_fastled_along_with_ws2811_ws2812_ws/?utm_medium=android_app&utm_source=share
philippe488
@philippe488
Thanks. Going to reddit: in fact fast led work but, i suspect interruption is not released, so that
philippe488
@philippe488
Sorry for sending to fast... new test in progress. May this come from i2c , as i found also some error without using fastled.show.
2ndtr2n
@2ndtr2n
I wanna try to make the rgb led strip like novation launchpad, i made the 64 button like midi fighter but misinh the led
urkel27
@urkel27
Hello Everyone
Im trying to figure out how to merge fastLED patters to mirror on multiple pins
Im a little lost :-)
Marc Miller
@marmilicious
@urkel27 Have you looked at the FastLED examples, this one in
urkel27
@urkel27
yes, i was trying to figure out how to merge it but finally got it :-)
and with neopixel too
I also have a kik room #fastled
Marc Miller
@marmilicious
@urkel27 Glad you got it. Feel free to come ask questions on the Reddit group too. http://fastled.io/r
urkel27
@urkel27
I know one of my upcoming task is to learn state machines. I'm looking to create a BLE controlled Teensy 3.2 with a HM-10 using some of the open source patterns at https://www.tweaking4all.com/hardware/arduino/adruino-led-strip-effects/. The issue is have so far is that some of the patterns never end, so there is no way to "interrupt" them unless state machines are used, i.e. colored bouncing balls pattern. Once I have the Teensy and HM-10 working efficiently, that will be my next goal.
I also created a Facebook community "FastLED and Neopixel"
MSO
@Flavourdynamics
If you need help with BLE, let me know. I just tackled that one a few weeks back.
Bart Vervenne
@BartVervenne2_twitter
Hi everyone, i'm new to arduino and fastled, but hoping to learn from all of you
meowcatluke
@meowcatluke
Hello there. i am using a SK2812 with Warm white led. everthing works as expected apart from the red displays green and the green displays red. how do i change the colour order?
i think i fixed it. yes i did
:]
thanks for your help meowcatluke,. meowcatluke: you're welcome
meowcatluke
@meowcatluke
now i am unable to set the brightness of the LEDS :/
using FastLED.setBrightness(CRGB(255,255,255)); and dims all the pixels of the led
changing these values does nothing to make them any brighter.
only if i comment out the line of code FastLED.setBrightness(CRGB(255,255,255)); do the LEDS go back to full brightness.
Marc Miller
@marmilicious
Try using just a single value such as FastLED.setBrightness(128); // 50% brightness
TP89
@_TP89__twitter
128 =/ 50%
Drew André
@drewandre
Anybody know if fastled supports the esp32 wrover-b modules out of the box? I've been having trouble getting a simple blink sketch to run. Same code runs flawlessly on an esp32 wroom module (the esp32 huzzah board from adafruit). Is the esp32 pin mapping based on a specific esp32 module? If so, should I start to think about porting?
Drew André
@drewandre
To clarify, the sketch runs on the wrover-b module but I don't see any data being written to the leds. Switch over to the esp32 wroom module and they light up. I don't have access to an oscilloscope so I'm not sure how to debug this
Marc Miller
@marmilicious
@drewandre I have only used the HiLetgo ESP-WROOM-32 ESP-32S. Try asking on the FastLED Reddit group as many more will see your question and hopefully someone there can help. http://fastled.io/r
Drew André
@drewandre
Sounds good. Thanks!
Leedan Johnson
@LeedanJohnson
Howdy all! Does anyone know if there is a way to force FastLED on an esp32 to use Software Spi instead of RMT. I think RMT is introducing some problems, but I would like to test without it to be sure.