rpi_ws281x
cava
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rpi_ws281x | cava | |
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15 | 37 | |
1,743 | 3,773 | |
- | - | |
0.0 | 7.8 | |
8 days ago | 25 days ago | |
C | C | |
BSD 2-clause "Simplified" License | MIT License |
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rpi_ws281x
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A 1536 LED Game Computer
Connect the led strip data pin to an available Io pin on the pi, connect the strips and to pi gnd pin and to a 5V power supply gnd pin, and connect the strips + to the 5V power supply.
Then use a library on the pi, for example this: https://github.com/jgarff/rpi_ws281x
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Needing advice on creating short delays mostly in C
I'm sorry, but bit banging WS2812 on that hardware is stupid. Find some peripheral that you can use to output WS2812 bitstreams, and use that. For example, for the Raspberry Pi there is a library at https://github.com/jgarff/rpi_ws281x that can use either PWM, PCM or SPI to do this. I know you're dealing with a different CPU, but this should give you ideas about how you can use its peripherals. The data sheet is available: https://github.com/milkv-duo/duo-files/blob/main/hardware/CV1800B/CV1800B-CV1801B-Preliminary-Datasheet-full-en.pdf
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WS2815 led strip with a raspberry pi
E.g.: https://github.com/jgarff/rpi_ws281x
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Controlling LEDs via ws281x with SPI
The library it's based on specifically notes SPI usage in the readme, and details on how to use (that's where I got the steps that I double-checked in the OP)
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How to setup the NEOPIXEL RING - 16 X 5050 RGBW LEDS on a rpi 4b?
Regarding the error though, it sounds like there are a bunch of slight cpu variations that aren’t all clearly defined. I can’t reproduce it myself (guess I have an older board). But there’s a solution suggested by the maintainer on a GitHub issue here https://github.com/jgarff/rpi_ws281x/issues/483 so I’d suggest trying that out first.
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What's an extremely cheap setup for proof of concept?
You can run them direct off gpio but if xlights is your “end game” the falcon pi cap is more inline with the ecosystem of xlights, falcon player and a overall Christmas light display end game where gpio pins is more of a “electronics project” https://github.com/jgarff/rpi_ws281x
- Which GPIO pins for Neopixels, and why?
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Using an LED Ring with Raveberry
The LEDs are controlled via the SPI interface of the Raspberry Pi. The rpi_ws281x library is used to manage the ring from python code. The library also provides the possibility to control LEDs via PWM or PCM, however this either disables either analog or digital audio output, which is quite disadvantageous for a music server. On a Raspberry Pi 4, there is one thing to look out for: SPI requires a stable clock, and the Pi 4 throttles itself by default. This can be avoided by adding core_freq_min=500 to /boot/config.txt. Raveberry takes care of this during install if you enable LED visualization.
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2021 Nov 15 Stickied 𝐇𝐄𝐋𝐏𝐃𝐄𝐒𝐊 thread - Boot problems? Power supply problems? Display problems? Networking problems? Need ideas? Get help with these and other questions! 𝑳𝑶𝑶𝑲 𝑯𝑬𝑹𝑬 𝑭𝑰𝑹𝑺𝑻
I have one too, when I plug it in the lights just stay white, unless its losing power in which they flash red. I wanted program them with python and I found a module to use but it wasn't really working. There was a script the came with the module that made them change color, but I haven't been able to write any scripts with the module myself. the module is called rpi_ws281x. You can install it using pip for python and I saw more about other programming languages too. for the button I was able to get that working as power button with this tutorial. Hope this helps.
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Raspberry pie for controlling addressable LED strips, whats the best way?
[2] https://github.com/jgarff/rpi_ws281x
cava
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Introduction
pywal is used to get the colorscheme from my wallpaper for my browser and terminal. left: neovim, top right: qutebrowser, bottom right: cava
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Making Certain Programs Transparent Instead of Making Whole Terminal Transparent
So, I use stuff like cava (audio visualizer) and btop in my Alacritty Terminal (BSPWM to run cava, i had to use terminal right and cava launches in terminal, I wanted to know whether i could run my cava or btop or any other terminal application transparent without making my whole terminal transparent.
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Need help understanding termux!
It's acctually really simple and really useful, I usually use it to ssh tunnel to my main pc and start a VNC server to control from anywhere. You can also code in basically any programming language like you would do on a linux machine. You can use CLI tools to, for example, download yt music and play it, you can even use cava in it. You can play with netcat, use those stupid terminal programs to run tetris with sed on the terminal or more, run a server on your phone or even run lightweight desktop environment locally to run even GIMP or firefox (though it's very resource consuming and even newer phones can't handle it properly). Theres even proot-distro which allowes you to contain a basic linux distro on your phone and launch an instance of it (gui included if you want).
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[bspwm] yine yeşillik ama biraz farklısından
Ses görselleştiricisi: cava
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my first rice! :)
cava
- New into tmux, but I really like it so far!
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Old timey radio refurbishing - and a side quest- unsure how to go about it
3) In progress: a Philco free-standing radio housing from the 40s. I'm using one of Parts Express' boombox kits for the audio, and a Pi (with a long, narrow TFT) running https://github.com/karlstav/cava where the radio frequency display used to be. This also would be a nice candidate for a solution like the one you shared.
- I wish iTunes still had the graphical EQ. (iTunes 9.2.1) 😢 I could watch it all day.
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[qtile-extras] New Visualiser widget
The widget needs cava to run. Currently you can customise the size of the widget, number of bars, colour and spacing between bars. You can also stop and start the widget (via stop(), start() and toggle() commands) so the script isn't running all the time.
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[herbstluftwm] onomicon - stay up late with the wizards
audio visualiser: [cava[(https://github.com/karlstav/cava)
What are some alternatives?
raveberry - A multi-user music server with a focus on participation
cli-visualizer - CLI based audio visualizer
hyperion.ng - The successor to Hyperion aka Hyperion Next Generation
conky - Light-weight system monitor for X, Wayland (sort of), and other things, too
audio-reactive-led-strip - :musical_note: :rainbow: Real-time LED strip music visualization using Python and the ESP8266 or Raspberry Pi
nord - An arctic, north-bluish color palette.
wifi-connect - Easy WiFi setup for Linux devices from your mobile phone or laptop
spectralizer - Audio visualizer plugin for obs-studio
zram-swap - A simple zram swap service for modern systemd Linux
ncmpcpp - Featureful ncurses based MPD client inspired by ncmpc
Adafruit-QT-Py-RP2040-PCB - PCB files for Adafruit QT Py RP2040.
ncspot - Cross-platform ncurses Spotify client written in Rust, inspired by ncmpc and the likes.