{"repo":"ros-realtime/ros-realtime-rpi4-image","free":true,"listed":false,"github":"https://github.com/ros-realtime/ros-realtime-rpi4-image","clone":"git clone https://github.com/ros-realtime/ros-realtime-rpi4-image.git","description":"An image for the Raspberry Pi 3/4/5 with ROS 2 and Linux RT preinstalled","language":"Jupyter Notebook","stars":330,"topics":["raspberry-pi","ros2","linux","real-time","realtime","ros","preempt-rt","rpi4b","rpi","ubuntu"],"license":"Apache-2.0","category":"media-processing","readme_excerpt":"Raspberry Pi image with ROS 2 and the real-time kernel ===================================================== This repo builds a Raspberry Pi image with ROS 2 and the real-time kernel pre-installed. This image can be downloaded directly from the releases page, flashed to a SD card, and booted on a Raspberry Pi. Support matrix -------------- Ubuntu Version ROS version Hardware model Supported Measured latency -------------- ----------- -------------- --------- ---------------- 22.04 (Jammy) Humble Raspberry Pi 3 ❌ N/A 22.04 (Jammy) Humble Raspberry Pi 4 ✅ 58 μs 22.04 (Jammy) Humble Raspberry Pi 5 ❌ N/A 24.04 (Noble) Jazzy Raspberry Pi 3 ✅(1) 330 μs (avg = 100 μs) 24.04 (Noble) Jazzy Raspberry Pi 4 ✅ 82 μs 24.04 (Noble) Jazzy Raspberry Pi 5 ✅ 34 μs (1) Raspberry Pi 3 is usable but not recommended for 1000 Hz applications due to the excessive scheduling latency from the weak CPU. The latency measurements are from the worst-case scheduling latency observed with 2 hours of CPU stress test alongside cyclictest. All tests done at the stock CPU frequency of the image. See this script for details. How to ------ Before you start, you need an SD card that is at least 8GB in size. 1. Download the desired image from the releases page. 2. The image is compressed with the zstd compression format. You will need to decompress it via the command zstd -d filename.img.zst . You may need to install zstd via: 1. On Mac: sudo port install zstd or brew install zstd 2. On Ubuntu: sudo apt-get install ","default_branch":null,"files":null,"tree":[],"storefront":"/r/ros-realtime","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/ros-realtime/ros-realtime-rpi4-image/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}