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.

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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, ...
Timothy Barrett's user avatar
1 vote
1 answer
342 views

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/...
bob's user avatar
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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-...
Saurav Kulkarni's user avatar
1 vote
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117 views

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 ...
sealion's user avatar
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ROS: TurtleBot3 motors runs 60 seconds after message is seen in topic /cmd_vel

I am running ROS Kinetic, on a Turtlebot3 Burger with a Raspberry Pi3. The goal here is to remotely control the Turtlebot from another Raspberry Pi. The remote controller Pi sends movement ...
Daniel's user avatar
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224 views

Kinect V2 (Arm/Hand Reading) to G-Code

I am very new to this space and would greatly appreciate some clear guidance. I have a Raspberry Pi 3, Arduino Mega 2560+Shield, and Kinect v2 + PC USB cable adapter. I am currently building the ...
TheAce's user avatar
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1 vote
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Stepper Motor For "Cable Car" System

I am a programmer with a lot of experience in IoT but somewhat new to actuators and robotics. I would like to create a "Cable Car" which consists of two stepper motors and a pulley. The motors would ...
mkamioner's user avatar
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how to actuate pneumatic muscle by the signals received by emg sensors interfaced with raspberry pi?

My aim is to actuate a pneumatic muscle based on signals received by EMG sensors placed on the biceps. Is there any Matlab code which can process the received EMG signals and convert them into any ...
user11603's user avatar
1 vote
0 answers
643 views

CC3D OpenPilot - Communication port

I am building a quadrotor with a CC3D (OpenPilot) and a RPi. My first idea is trying to communicate the CC3D with the RPi using the main port of the first one but I can't find any information about ...
osuarez's user avatar
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RNN instead of a PID controller

I am building a drone using the raspberry pi and I am using 6*PID controllers to control the speed and the value for each angle, can I use a recurrent neural network (RNN) or other neural network to ...
e-nouri's user avatar
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Raspberry Pi finer servo control

I'm usig RPI and Servoblaster to control servos. I've set the --step-size to 2 us, but I'd like to decrease it to 1us. I've tried to set the ...
Alex's user avatar
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1 answer
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How can I troubleshoot these under-powered servos?

I have three 150kg servos installed in a robot arm. I have tested them successfully when connected to a servo driver hat on a raspberry pi zero 2w (image). However, they were under-powered because the ...
user3342256's user avatar
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37 views

Compiling ROS2 from source on RPI5 with Ubuntu 23.10

I have setup an LXD instance with ubuntu 23.10, and tried to compile ros humble from source as described in https://docs.ros.org/en/eloquent/Installation/Linux-Development-Setup.html and the step: ...
Can Altineller's user avatar
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Using a Picamera with ROS Noetic on a Raspberry Pi

The goal is simply to get my raspberry Pi 4 running Ubuntu 20.04 (64 bit) and ROS1/Noetic to use a raspberry Pi Camera. Now there are many pages devoted to this questions and I have tried them all. I ...
pitosalas's user avatar
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ROS2 Multiple Machines, Gateway + Hotspot + Ethernet (DOMAIN ID)

I hope someone can help me with my problem. First of all, my setup: PC: Connected to Raspberry Pi's hotspot (PC-IP: 192.168.12.19) Raspberry Pi: Creates a Hotspot (192.168.12.1) and connected to Wifi (...
alex288823's user avatar
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1 answer
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ROS2 controller needs motor encoder values

I am wanting to link to this encoder code with another ROS2 C++ program, in the ROS2_Controller group. I believe I can include the header file from this encoder code in compilation and use a public ...
Russ76's user avatar
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Riding a robot model in Gazebo along a straight, curved path with feedback on a Raspberry running ROS

please be kind and advise how to implement the following: I have a computer with ROS and Gazebo in which I have a robot model in URDF format, I need this model to go on a straight/curved path(straight/...
Perry's user avatar
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1 answer
21 views

nodes have a lot of cpu and mem usage on launching, and cause them be killed

I'm trying to launch some simple nodes on RaspberryPi 4B 4G, Ubuntu Server 22.04, which include a robot_state_publisher, a Lidar driver, a static_transform_publisher, and a wheels control node wrote ...
jh Z's user avatar
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Tuning slam-toolbox localization and expectations

I am new to SLAM-Toolbox, and seeing the volume of parameters and options is a bit daunting. I have managed to find async map creation parameters for a non-complex area of my home that appear to ...
Cyclical Obsessive's user avatar
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15 views

ESC's get armed, spins briefly and then stops

My team is building an AUV using a Pi4. We are using 1000KV 12-24V brushless motors and 30A Brushless ESCs. We are running the motors currently with python using pigpio. The code I have now can arm ...
willfire 03's user avatar
0 votes
1 answer
30 views

Low-profile durable electrical connections between microcontrollers and SBC

I plan to connect an SBC (such as the Jetson, although I'll be using the Pi) to a series of microcontrollers using the GPIO pins over the SPI protocol. What's the best way to connect these devices? I ...
chmod777's user avatar
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32 views

Rotot hardware - batteries considerations

[please dont downvote, just let me know what infos are missing] I built my second robot and I always end up with the same issue ... The CPU board always resets when a high rush of current is demanded ...
phil's user avatar
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77 views

YAHBOOM ROSMASTER R2 will not connect to maker control application

I am currently trying to get a YAHBOOM ROSMASTER R2 up and running. I am attempting to follow the instructions found here: http://www.yahboom.net/study/ROSMASTER-R2 in the "APP Remote Control ...
Nathan Hogg's user avatar
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0 answers
67 views

No access to /dev/mem. Try runnig as root!

I'm using ubuntu 22.04 on raspberry. I'm trying gpio pins. But I couldn't access to gpio pins without being root. I got this error,No access to /dev/mem. Try runnig as root! How can I solve this ...
Oğuz Kuru's user avatar
0 votes
1 answer
28 views

Phidgets limit switches in python using a VINT hub

I'm trying to set up a Phidgets magnetic limit switch in python on my RPi (this one - https://www.phidgets.com/?tier=3&catid=13&pcid=11&prodid=416) so that once the sensor detects the ...
Jake's user avatar
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0 answers
16 views

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 ...
Infinitypool's user avatar
0 votes
1 answer
93 views

"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 <...
venkata's user avatar
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54 views

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 ...
Seb Wilson's user avatar
0 votes
2 answers
127 views

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 ...
Blucario's user avatar
0 votes
0 answers
50 views

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 (...
Chames Eddinne's user avatar
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0 answers
60 views

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 ...
kak_taki's user avatar
0 votes
0 answers
330 views

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? ...
Pedakolimi Harish's user avatar
0 votes
0 answers
54 views

Can a RPI3B+ handle all this?

I am building a robot that needs to accomplish the following tasks: Keep track of 4 quadrotor encoders, each 979.62 CPR @ ~ 500RPM, so ~ 8163.5 counts per second Read from an RPlidar A1M8, giving out ...
Murey Tasroc's user avatar
0 votes
2 answers
418 views

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 ...
Shah's user avatar
  • 1
-1 votes
1 answer
64 views

How can I connect arducopter to Raspberry Pi?

This is my school project. I would like arducopter to connect to Raspberry Pi but I do not know how to do it. Please help me!
Recep Orak's user avatar
-1 votes
1 answer
551 views

controlling 6-axis robotic arm with raspberry pi, what instructions can do this?

I have been trying to build a robotic arm using a PCA9685 servo controller, a 6-axis robotic arm, and a raspberry pi model b+. I wired them all together accordingly but I have no idea how to actually ...
ilovejasim's user avatar