Please do join us over on /r/FastLED, too!
https://www.reddit.com/r/FastLED/
https://www.reddit.com/r/FastLED/
hi team i am kinda new to programming and Arduino in general, i was mesmerized by Leds and fast led examples and i ordered like 3000 wd2811 pixel bullets and after seeing the video but now i am struggling with the controls
i have tried almost all and wled project supports max upto 1200 leds max but not more then that.
i have read about teensy controlling multiple with parallel port but that too 1000 only but with sncy pin they do multiple leds.
then i came across esp32 i2s fast led update but not happening as its loosing packets over wifi
then i found someone did it with esp32 and parallel port but i dont know where to start. so i am asking here about how shoud i proceed
in the struugle i to get it working i have ordered 3 esp8266 and 1 esp32 and a raspberrry pi 3
I have the following arrangements
3000 leds (ws2811 5v) on a panel arranged in snake configuration and power injection every 50 leds with 80 amp 5v power supply
i have tried almost all and wled project supports max upto 1200 leds max but not more then that.
i have read about teensy controlling multiple with parallel port but that too 1000 only but with sncy pin they do multiple leds.
then i came across esp32 i2s fast led update but not happening as its loosing packets over wifi
then i found someone did it with esp32 and parallel port but i dont know where to start. so i am asking here about how shoud i proceed
in the struugle i to get it working i have ordered 3 esp8266 and 1 esp32 and a raspberrry pi 3
I have the following arrangements
3000 leds (ws2811 5v) on a panel arranged in snake configuration and power injection every 50 leds with 80 amp 5v power supply
Hi Mohit- sounds like a big and cool project. I recommend asking about it over on the main FastLED discussion board at
https://www.reddit.com/r/FastLED/
There are many many more people there, and lots of them have expertise with projects like this. Good luck with it and I can’t wait to see it, both work-in-progress and the finished project!
https://www.reddit.com/r/FastLED/
There are many many more people there, and lots of them have expertise with projects like this. Good luck with it and I can’t wait to see it, both work-in-progress and the finished project!
and soon i will release the video and maybe write an instructable blog on it
@batKat You need to download the entire FastLED library (which includes the FastLED.h file). Have a look at this video: https://youtu.be/m8LdmM0hC6s
hi everyone. quick question that I wasn't able to find an answer to online or by looking at various led stip datasheets. if I have a 5v strip, I get that the data line should be 5v. but what about the clock line? should it also be 5v? and what about a 12v stip -- should data/clock lines be 12v signals or 5v typically? thanks!
So, I've been banging my head against the wall on this for 2 days. Initially I thought it was a memory issue, but after seriously debugging for hours and hours (including getting help in the arduino discord), I've come to the conclusion that it's FastLED.show() that is crashing. It could be due to interop with the free running mode, I'm not sure, I'm relatively new to this. Here's the code. I've highlighted the spot that's revealed it's just FastLED.show() that's crashing. https://github.com/snowe2010/waveform_warning_system/blob/master/waveform_warning_system.ino#L233-L238
Any help would be really really appreciated.
Oh, to go into more detail. The entire program seems to run,but as soon as it hits a FastLED.show statement it immediately jumps back to the setup function and restarts everything.
@snowe2010 There are two things that come to my mind from your initial description. Trying to write pixel data outside of the CRGB array (so if you tried to write pixel data to an led number above your last pixel, past leds[161], then that could cause wackyness in memory, including freezes and restarts. But since you said adding a delay before calling show() fixed the issue, then that doesn't seem it would be the issue if it does indeed keep running (after each pause). The second thought was if the controller is browning out and restarting from becoming starved for power. When you call show, if it suddenly turns a bunch of those 162 leds and your power supply and power distribution to all those leds isn't adequate enough it could cause a brown out, causing the controller to restart. If you'd like to have more people have a look and provide suggestions as to what might be happening, please post your question to the FastLED reddit group. Include the link to your code and also include detailed info about your setup, power supply, and wiring too.
howdy everyone. I have a question about multiple controllers. I have a setup where I have 8-way parallel esp32 output using the RMT controller, but am I able to add a separate CRGB object for a single status led without breaking the parallel output of the main 8 strips? the status LED is not the same chipset as the main LED strips (not that it matters since RMT can drive multiple chipsets). I've read the docs for multiple controllers, but I just want to make sure I understand correctly that parallel output is only for one single CRGB object.
@drewandre Not sure, did you try it? Ask on the reddit group and tag samguyer as he should know. If you have a few extra pins you could use a basic non-addressable RGB LED for your status LED. https://github.com/FastLED/FastLED/blob/master/examples/AnalogOutput/AnalogOutput.ino
Hello everybody 🙂👋🏼
I am working on a pretty large light sculpture involving ~4300 SK9822 LEDs but I have a classic problem: the end of the strip flickers. It only seems to happen when the system starts to draw more power which is super weird to me since the PSUs are rated for much more than what is drawn. I posted a more detailed version on Reddit, I would be very grateful if some of you checked it out :)
https://www.reddit.com/r/FastLED/comments/liaqy9/large_number_of_sk9822_green_flickering_at_the/
Hi everyone!
The power management functions basically assume 5V: If you use a lower voltage value in set_max_power_in_volts_and_milliamps it basically just calculates a lower power value and dims more, instead of allowing higher brightness on account of having less voltage drop in the constant current drivers.
I could work on a quick fix, but first wanted to check if anybody even cares? For my own usage I'd have no problem just doing the math and feeding a 5V equivalent power value to the function(also, I've yet to actually NEED to use lower voltage, just was wondering how the power limiting was implemented)
Would it only make sense if actual chipset dependency was included? With something like WS2815 (weird series shunting 12V chip) it would be kind of nice.
The power management functions basically assume 5V: If you use a lower voltage value in set_max_power_in_volts_and_milliamps it basically just calculates a lower power value and dims more, instead of allowing higher brightness on account of having less voltage drop in the constant current drivers.
I could work on a quick fix, but first wanted to check if anybody even cares? For my own usage I'd have no problem just doing the math and feeding a 5V equivalent power value to the function(also, I've yet to actually NEED to use lower voltage, just was wondering how the power limiting was implemented)
Would it only make sense if actual chipset dependency was included? With something like WS2815 (weird series shunting 12V chip) it would be kind of nice.
Hi All. I'm trying to determine if writing a Rust wrapper around FastLED is feasible. Rust has Arduino support nowadays and can wrap C libs nicely, so it should in principle be possible. First thing I'm running into is that I'm not sure how to compile the library outside of the Arduino IDE. Is there some supported way to build a static lib out of this?
Hi all - novice here looking to use Arduino with LED strip for a digital piano, wanting to get the best gear. I've gathered that I need an addressable RGB LED strip (that is a 4-wire chipset) that is compatible with Arduino and that I need to pay attention to the spacing relative to the keys (there are 88 keys and a keyboard measures slightly over 48 inches). Any recommendations on what to buy? Many thanks, I hope everyone is having a good Monday.
Hello @williampno The 4 wire strips (like APA102 or LPD8806) that have a data and clock line are faster, but you might not necessarily need a 4 wire chip. WS2812B strips can still do a lot. Are you wanting to have the leds react to audio (like a lineout signal from the piano) or by MIDI? Some common pixels/meter are 32, 60, 144, but you can also find 48, 90-something, 120, 128. There are also pixel strings (more like Christmas "bullet" lights) that could be spaced at a specific distance but are a bit bulky. Post your question to the reddit group with as much detail about your project that you know and you'll probably get some more answers there. https://www.reddit.com/r/FastLED
@williampno Also, check out The Hook Up video links on this wiki page: https://www.reddit.com/r/FastLED/wiki/index/user_examples#wiki_related_websites.2C_blogs.2C_.26amp.3B_video_tutorials
On the github page it says it has support
I also have Arduino Unos and Metros, but it's the same issue. Metro Mini to Metro Mini, Metro to Metro, Arduino Uno to Arduino Uno - I2C on its own works well. FastLED on its own works well. As soon as the Master (with FastLED) has to do I2C to a Slave, data arrives on the Slave in choppy intermittent fashion.
Here's the Master https://gist.github.com/systembolaget/3b06509f9fdb19f3c29bd6501496a394 and here's the Slave https://gist.github.com/systembolaget/3452b28550eefbbf4a8c45f5cf69252d
@DenverClarke Problem solved. Someone on Stackexchange shared their FastLED fork that does away with the interrupt problems. Works perfectly now. See https://stackoverflow.com/questions/51269801/arduino-ignoring-serial-interrupts-when-using-fastled#comment100734987_51273107
Will fastled survive the core v3.0.0 ? 😁
Can anyone help me with this issue. I am using the WS2812B RGB Leds with a Teensy micro controller, and with the fast led library all the leds display white continuously. I am able to write other colours and they show but add with the white. I don't have any of these issues with the neopixel library, so I can't think of why it would be my hardware setup.