zram-swap
rpi_ws281x
zram-swap | rpi_ws281x | |
---|---|---|
12 | 15 | |
310 | 1,784 | |
- | - | |
0.0 | 0.0 | |
about 2 years ago | 25 days ago | |
Shell | C | |
MIT License | BSD 2-clause "Simplified" License |
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zram-swap
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Enable zram on low memory devices
Basically: sudo apt update sudo apt full-upgrade sudo apt install git sudo reboot git clone https://github.com/foundObjects/zram-swap cd zram-swap sudo ./install.sh
- RPI 8Gb , is swap necessary?
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Help test a ZRAM optimization for Pop!_OS
I am already using Zram since i decided to turn my swap partition off on my SSD. i've allocated 4GB of my 16 with the lzo-rle algorithm and so far I have had no real issues. https://github.com/foundObjects/zram-swap
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Zram Swapper for Archlinux
How's it different from https://github.com/foundObjects/zram-swap ?
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Got my Node up and running, updated to 0.18.
I used pinodexmr to do it, then added zram-swap(easy way to manage zram, a memory compression manager on linux, also see zram-config).
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Pop os system keeps freezing
Additionally, they could try zram using something like this: https://github.com/foundObjects/zram-swap I don't think this will cause issues, and I have actually disabled my swap partition now and use 1/4th of my memory as compressed swap.
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2021 Nov 15 Stickied ππππππππ thread - Boot problems? Power supply problems? Display problems? Networking problems? Need ideas? Get help with these and other questions! π³πΆπΆπ² π―π¬πΉπ¬ ππ°πΉπΊπ»
I read in a few articles that the default sram-config package has some sizing/erro handling issues. Two configuration scripts seem to be recommended: this one and this other one.
- In case youβre wondering, yes the pi zero 2 can handle octolapse.
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How do I setup zram?
https://github.com/foundObjects/zram-swap/ Easy install and setting.
- Zram and swap
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 arenβt all clearly defined. I canβt reproduce it myself (guess I have an older board). But thereβs a solution suggested by the maintainer on a GitHub issue here https://github.com/jgarff/rpi_ws281x/issues/483 so Iβd 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 βend gameβ 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 βelectronics projectβ 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 ππππππππ thread - Boot problems? Power supply problems? Display problems? Networking problems? Need ideas? Get help with these and other questions! π³πΆπΆπ² π―π¬πΉπ¬ ππ°πΉπΊπ»
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
What are some alternatives?
RPi4 - Raspberry Pi 4 UEFI Firmware Images
raveberry - A multi-user music server with a focus on participation
zram-generator - Systemd unit generator for zram devices
audio-reactive-led-strip - :musical_note: :rainbow: Real-time LED strip music visualization using Python and the ESP8266 or Raspberry Pi
wifi-connect - Easy WiFi setup for Linux devices from your mobile phone or laptop
hyperion.ng - The successor to Hyperion aka Hyperion Next Generation
zram-swap-config - Replacement for broken zram-config-0.5 package
Zram_Swap - script to create Zram swap for Android Rom building
Adafruit-QT-Py-RP2040-PCB - PCB files for Adafruit QT Py RP2040.
default-settings - Distribution Default Settings