kaleidoscope
OctoWS2811
kaleidoscope | OctoWS2811 | |
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4 | 18 | |
1 | 259 | |
- | - | |
0.0 | 2.3 | |
about 1 year ago | 5 months ago | |
C++ | C++ | |
MIT License | - |
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kaleidoscope
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fastled and rotary encoder
I have a project that runs on the ESP32 and uses two interrupt driven rotary encoders. You can find the source on https://github.com/benpeart/kaleidoscope. It's not a simple sample but most of the code has nothing to do with the rotary encoders and can be ignored. Look at the code inside the '#ifdef ENCODER' in main.cpp for how to initialize and use the encoders.
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Flaky rotary KY-040 encoders
I added 3 .22 uf capacitors (one each between CLK, DT, SW and ground) to try and make them a little less noisy but I can't notice any difference between when they are there or not. On the software side, I'm using the Bounce2 library to debounce the switches and am using a state machine library I based on Oleg Mazurov's code (see the implementation on GitHub) for the rotary encoders.
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FastLED.Show not compatible with OTA updates on ESP32?
I'm building a digital Kaleidoscope (source) using FastLED running on an ESP32. I added AsyncElegantOTA and found that any attempt to do an OTA updated resulted in a crash:
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Unable to get FastLED 3.4 working on multiple strips in parallel with Teensy 4.0
I'm working on a project where I have 4 WS2812B LED strips hooked up to a Teensy 4.0. I've set it up using the instructions for parallel output on pins 19,18,14,15 but I'm having issues where often, the LEDs don't update properly or sometimes at all. Even something as simple as a FastLED.clear(), FastLED.show() won't actually show the cleared LEDs.
OctoWS2811
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Hi everyone, which cheap & available controller is a good choice at the moment? Requirements: 200+ MHz & FastLED hardware SPI support. I've an ESP32 V4 in mind. Or maybe an ESP32-S3FN8. Any experiences, comments or suggestions? What is widely used currently?
I highly recommend the Teensy 4.x with the OctoWS2811 driver. This driver provides 8 channels of parallel output using DMA data transfers to offload the CPU. I think that meets your criterion for "hardware SPI". It doesn't seem like the T4 is overkill for what you're doing, especially if you're using floating point math. The T4 is blazing fast, and I've heard mixed reviews of ESP32 FP performance.
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How would I recreate the strip lights from the top?
They are actually quite easy if you have some cash. Check out NeoPixel at Adafruit, they have a detailed guide on how you can control strip lights. NeoPixels are great but a tad expensive, you can find less expensive strips on discount resellers, search for “RGB Addressable LED Strip”. Some offer a control module but you will be limited the the built-in color patterns and speeds. If you can solder and program an Arduino you can modify example scripts to do a lot of things, even create digital signage and video walls.
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New to this. Suggestions for controlling 2,016 WS285 LEDs?
Assuming you're going to use the OctoWS2811 library to drive the LEDs, the maximum possible frame rate for 2 channels of 1,008 LEDs should be:
- Anyone have experience using pixel tape to create a video wall?
- Beginner advice hardware
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Best µcontroller to handle 600 LEDs, fastest as possible
However, if you have all 600 LEDs in a single strip, and the strip is WS2812, then you're limited by the internal refresh rate of the LEDs, which brings you to about 55hz. Which is ok, but if you spend much time in-between refreshs, maybe it's not fast enough. Certainly not for persistence-of-vision. If you're happy to break your strip into several sub-strips that get their own data line, you can speed up the refresh rate a lot. If you're using a Teensy 4, you can use this library for example, which allows you to efficiently drive many LED strips at once: https://www.pjrc.com/teensy/td_libs_OctoWS2811.html
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Any tutorials for attaching & controlling a WS2815 to computer's PSU PCIe 6+2?
You can also check out OctoWS2811 https://www.pjrc.com/teensy/td_libs_OctoWS2811.html
- Struggling to get just ONE LED to light
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Thought about FastLED and RGBW
I've used RGBW for a number of projects involving non-addressable LED strips and spot lights. I haven't yet needed RGBW for a project requiring addressable strips, but it's in my tech roadmap. I no longer use FastLED, and I've written my own HSV/HSI-to-RGB/RGBW color conversion library. I use the OctoWS2811 library (not the adapter board) for DMA-based serial data output to addressable LED strips. It appears that this library supports RGBW strips, but I haven't tried it yet (others are doing the same). See the last few paragraphs of this article for more details.
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FastLED 3.5.0 was released
But the OctoWS2811 Library can only use 8 Pins, at least on the page is only for a Teensy 4.0 and 4.1 the hint, that any group of pins is possible.
What are some alternatives?
FastLED - The FastLED library for colored LED animation on Arduino. Please direct questions/requests for help to the FastLED Reddit community: http://fastled.io/r We'd like to use github "issues" just for tracking library bugs / enhancements.
Striptease - Sexy, audio-responsive effects on LED strips.
WLED - Control WS2812B and many more types of digital RGB LEDs with an ESP32 over WiFi.
WS2812Serial - Non-Blocking WS2812 LED Library
ESP32-Quadrature-Counter - A quadrature counter (e.g. for rotary encoders) for the ESP32 using the hardware PCNT counter.
sp108e-led-controller
Lamp - Add some bling to my lamp
FastLED-SoundReactive - Sound Reactive displays for FastLED
Arduino-Sampling - High and low speed sound sampling on an Arduino