Questions tagged [raspberry-pi]
The Raspberry Pi is a credit-card sized general purpose computer. Questions about Raspberry Pi but not related to robotics are off-topic, but may be asked on Raspberry Pi Stack Exchange.
206
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Do I need anything between my Raspberry Pi, Orin Nano and Power Bank to protect my RPi and Orin Nano?
I am a beginner and am learning by building a 4-wheel mobile robot. I plan to use Li-ion power banks to power my Raspberry Pi and Orin Nano. Do I need any protection between the power bank and the ...
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How do I display a babylon.js animation on a Raspberry Pi 4b screen using ROS?
I am currently trying to run ROS in a multiple machine setup where my laptop is the master and an RPI is the slave. I want to run the babylon.js code on the RPI to display an animation. I am new to ...
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"keyserver receive failed" with ROS Melodic Raspberry Pi
I am working on Unitree A1 Quadruped Robot. The bot has two boards, with Raspberry Pi on the front board. I am trying to install the ROS Melodic Raspberry Pi version using this link:
When I run the <...
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Micro ROS build stuck after step one in raspberry Pi 3
I am running ROS2 Humble on my Raspberry Pi 3 and I also have a Raspberry Pi Pico running micro ROS. I am trying to install the micro ROS agent on my RPi3. The snap version of the micro ROS agent did ...
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Stepper motor control with Sparkfun Autodriver L6470 in Raspberry Pi 4B
I am struggling and cannot get this to work all (stepper motor doesn't do anything, not convinced even energising as can turn manually with no resistance)
Pins used from a Raspberry Pi 4B to a ...
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2
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22
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ROS1 to ROS2 in Burger
I want to work in ROS2 on my turtlebot3-burger (pi4), while I already work on ROS1-melodic. Can I do that with keeping my progress and without problems?
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123
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Drifting issue in ROS2 using SLAM-Toolbox
I'm slightly new to robotics and I'm trying to prototype using ROS2-Galactic, I am using built-in packages such as Slam Toolbox and others.
Now that I'm trying to run it, I'm having some issues with ...
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Dead reckoning or SLAM for localization with unusual locomotion?
I am working on a senior design project with a robot that moves in an unusual way: it rolls around in a single spherical body, similar to BB-8 from the Star Wars sequels. My personal task for the ...
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Where should I write and call GPIO port connection in the hardware interface in ros2_control for control of robot movement on Raspberry Pi 4?
I am using ROS 2 Humble on Raspberry Pi 4(Ubuntu 22.04 OS).
I am trying to build 2-wheeled diff-drive mobile robot and using ros2_control for controlling, but I'm ...
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How can I change the dicitonary of aruco markers in aruco_ros package to the newer DICT_4x4 dictionary?
The arcuo_ros package by pal_electronics uses old dictionaries of aruco markers, the markers of these dictionaries are coded in uint64_t integer in the code file of the dictionaries dictionary.cpp (...
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Stepper motor not working
I have recently purchased some stepper motors and drivers. The link to them is here.
Stepper motor driver
Stepper motor
In addition to this i have this power source
Power source
The problem that is ...
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374
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Pico W does not connect to my phone's hotspot
I am trying to connect my Pico W to the hotspot that I have. The password and the name of the hotspot are in a file called "secret." I found the code online and when I try to run the code ...
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Pi Pico - HC05 AT commands don't work
I am trying to set up a Bluetooth communication between two pi pico devices using HC05s. I am trying to make the two HC05s connect and I read that you need to set up Master/Slave configurations using ...
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DRV8833 Motor driver connected to four raspberrypi zero V1.3 GPIO pins causes motor movement to fluctuate despite setting all pins to OFF
I have a raspberrypi zero V1.3 which I connected to multiple DRV8833 motor drivers. the DRV8833 chip is a motor driver that allows bidirectional movement of brushless motors by setting the two pins ...
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[Raspberry Pi]: ROS 2 Humble on Ubuntu 22.04 Server: v4l2_camera reports "Failed stream start: Invalid argument (22)"
I have ROS2 Humble installed on Ubuntu 22.04 Server (64-bit) on a Raspberry Pi4.
When I run the v4l2_camera node it finds my Pi Camera (v1.3) but then complains:
Failed stream start: Invalid argument ...
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error with Breezyslam (Descriptor length mismatch)
so I was working on a slam project and using the Breezyslam repo link, I am always getting this error, I don't know where I am getting it wrong, can someone help?
...
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155
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Diff-drive robot - Obstacle avoiding - random walk
I have implemented a logic-based algorithm for obstacle avoidance in a differential drive robot with 5 IR sensors.
I want the robot in space, for example, a square room, to move freely and avoid ...
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2
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Raspberry Pi car connection to laptop in the park where there is no internet
I have built a small Raspberry Pi 4 car which can be controlled via my laptop. Both Raspberry Pi and Laptop are connected to my home internet. I want to take the car outside in the park. There is no ...
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How to move the robot using Raspberry Pi?
I used a Raspberry Pi 3 model B and a camera to make a robot detect fire, after watching Train a custom object detection model using your data.
However I am not sure how to make this robot move after ...
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Trying to get started with iRobot Create2 - need help reading sensors
I'm getting started helping high school students learn about robotics and we're trying to interface a Raspberry Pi 4 to the iRobot Create 2. I've got them started with some sample code for moving the ...
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Error when compiling cv_bridge in Raspberry Pi 4B with Raspbian buster and ROS Noetic
Im using Raspberry Pi 4B, with Raspbian Buster and ROS Noetic. When I tried to compile my catkin ws with a cv_bridge package I got the following error:
CMake Error at vision_opencv/cv_bridge/...
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How to control a servo using ROS2 and MICRO-ROS
I am currently using a raspberry pi pico and a raspberry pi 4, So far I have established a connection between the two using micro-ros-agent I have also successfully built and ran the example provided ...
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Rospy: Why does the loop not get interrupted?
I am working on the software for an autonomous Raspberry-Pi based robot which should keep moving for 2 minutes unless an unintended key is fed to it as input. Upon receipt of the unintended key, the ...
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Affordable pi like computer for robot
I have raspberry pi in a robot but it seems sdcard is not reliable at all.
What are affordable options that could be considered reliable? Pi+USB Flash, Pi+USB SSD, Pi compute module with eMMC, ...
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Best way to power Raspberry Pi 4 8GB + Arduino Uno Robot?
I am building a robot that uses an arduino to drive 4 mecanum wheels, which will be controlled by a Raspberry pi 4 8GB with the Lobe Machine Learning Hat via a serial connection.
I'm fine with having ...
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527
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Recommended building materials for building a robot WITHOUT 3D printer?
I have a ton of ideas for building a robot using an arduino and raspberry pi. I have an assembled the wheels and chassis, and now I am left with an ugly raspberry pi and arduino + wires. It works, but ...
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104
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Raspberry Pi 4 to PCA9685 Steering Working but not Throttle
I am using a raspberry pi 4 connecting to a PCA9685 and following the instruction on the donkeycar doc site (the link can be found below). I am at the step "fine tuning calibration." When I ...
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Now Unable to Communicate with Create2 and Getting repeated Bat: messages via the serial port
After hooking up my Raspberry Pi4 to the Create2 for the second time, I am now unable to communicate with the Create2. When I open minicom on the pi I see the following messages repeated on the screen....
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How to handle curved paths in maze
-I have an RPi on Ubuntu with ROS (Kinetic). The task is to solve a maze. I have implemented a left-hand algorithm to navigate through the maze.
-The robot is equipped with 3 ultrasonic HC-SR04 ...
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3
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885
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ROS Webcam Stream Really Slow
I am trying to stream the images from my camera to a VM via ROS. Here is my setup:
Raspberry Pi 3B+ with Picamera v2. It is running ROS Noetic with cv_camera_node
...
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255
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Is it possible to control the speed of a hoverboard motor[BLDC motor] with a raspberry pi? If so, how?
In my project, I'm making a robot using two hover board motors, a motor control board such as this one:
https://www.ebay.com/p/2242827374?iid=162674407600
and a raspberry pi. I've connected the motor ...
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2
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268
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PID Control: Is adding a delay before the next loop a good idea?
I am implementing PID control in c++ to make a differential drive robot turn an accurate number of degrees, but I am having many issues.
Exiting control loop early due to fast loop runtime
If the ...
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DIY Smart Devices [closed]
I am a software developer. I make apps.
I have several ideas for Bluetooth-enabled smart devices using basic accessories and peripherals like cameras, speakers/headphones, lights and some external ...
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Controlling high torque servo motors with Raspberry Pi
I need to control 10 Standard Servo Motors (operating at 4.8-7V/300mA-1A/2.5kg-5kg torque) in my project. I'm using RPi as my processor and I was looking for a servo driver. I came across PCA9685 16-...
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Raspberry pi libraries for fortran
I'm quite a fan of fortran and I was wondering if there were any libraries to control the GPIO pins in a raspberry pi with it. I find python to be quite slow so I think it is the best option for ...
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Raspberry Pi & L298N & Johnny Five, motor turns when instantiated
I'm a newcomer to this kind of tinkering so please bear with me here. I've searched high and low for an answer but have been unable to find one. I have a Raspberry Pi Zero W hooked up to a L298N motor ...
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215
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Power to Raspberry Pi and DC motors from a single USB power bank
I'm running a simple robot involving a Raspberry Pi 3 and 2 JGA25-370 motors.
The system is powered from a single Powerbank (EasyAcc 10000MAh) which has 2 2A ports.
DIY USB cable has data pins ...
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274
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Guidance on SBC for Visual-Based SLAM [closed]
Intro: I am a student that just started a project regarding prototyping a mobile robot that involve Indoor SLAM implementation. I am very new to the field of computer vision, SLAM and SBC (single ...
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1
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How do I convert centre-returning joystick values to dual hobby-motor direction?
Currently my setup is:
2x hobby TT motors connected to a Pi Zero with a motor HAT
Python script running on the Pi which runs a Blynk python client and controls
motors via the gpiozero library
Blynk ...
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Driving a small motor
I am trying to drive a small motor using (software emulated PWM) from a Pi like device. I'm following a circuit that looks like this:L
https://www.instructables.com/id/Raspberry-Pi-GPIO-Circuits-...
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359
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How to Correct for Gyroscopic Drift?
I know similar questions have been asked before, but I have researched for hours now and have not been able to find a viable solution.
I have a Raspberry Pi 4 and the Adafruit LSM9DS1 IMU, which has ...
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170
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Waking up Roomba over serial
I've been trying to mod an old Roomba 400 series (model #4220) by adding a Raspberry Pi to it.
I have the Raspberry Pi communicating over serial with the EZSync018 cable. I have everything working, ...
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3
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288
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I wanna make a raspberry pi car using an RC car. I would like to know if the servo multiplexer is necessary?
So I'm working on a project and it involves making a raspberry pi car, be it from scratch or with the help of can rc car. I chose the latter. Now the problem is I don't really have servo multiplexers ...
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112
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Serial Communication between RaspberryPi and CC3D?
I have built a quadcopter with a CC3D FC, using LibrePilot for configuration. Everything is smooth with the tx/rx I used to command the quad with but now I would like to effectively use the RPi as a ...
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1
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414
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How do I download libraries onto the Ubiquity Robotics Raspberry Pi image
I downloaded an sd card image by Ubiquity Robotics which is an Ubuntu OS with ROS preinstalled onto my Raspberry Pi. This image creates a pifi access point for the Raspberry Pi and allows me to ssh ...
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How to get position (X Y values) from a USB optical mouse
I want to use an optical mouse to measure displacement in X and Y direction of my robot. I'm using Ubuntu mate 18.04 on raspberry pi and wrote the following python code :
...
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How to access Raspberry Pi over wifi?
I have to use Raspberry Pi with Arduino on a mobile robot and access Raspberry Pi on a PC through WiFi. Is it possible? Please explain how to do it?
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Is it compulsary to learn Arduino programming in order to use Udoo Neo as an IOT device?
I'm an absolute beginner, so please bear with me. I'm currently doing a project where I need to control 2 DC motors using the Udoo board. Should I first learn to use an Arduino or is it possible to ...
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66
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What should i do to rebuild robot salto from Berkeley uni as a mechanical engineering undergrad?
What are the main components of robot salto? What are the necessary skills and knowledges to reproduce it?
Also as you can see, i am a mecheng and i want to reproduce this robot as finishing project ...
5
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1
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786
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Multiple machine ROS image transmission error
I'm currently trying to establish communication between my Raspberry Pi based robot and a Cluster which are on the same network. Although I am able to ping and SSH one device using the other, I'm ...
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