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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34 views

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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Using Scratch with Waveshare Alphabot pi robot

I am trying to find out if and how i could use Scratch to control Waveshare's Alphabot kit. I want to be used as an entry level robotics training for kids 8-10 that already manage standard Scratch. ...
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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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1answer
31 views

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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19 views

Raspberry pi 3b+: any recommendarion for a tube wind speed sensor for raspberry

I am looking for a tube wind speed sensor compatible with raspberry pi 3 b+. I found some on internet, but i dont know if they are compatible, most are for flying devices, i will use the sensor for ...
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1answer
51 views

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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1answer
43 views

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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12 views

audio_play dst parameter

I am testing audio_capture and audio_play node on raspberr yp 4B. Here when i tested it by capturing audio on pi and playing in remote computer with audio_play it is playing the audio on my headphone. ...
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2answers
61 views

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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1answer
50 views

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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0answers
8 views

Get detections from picamera and control drone accordingly

I am working on a project where I built a drone, with a Navio 2 and RPi3B+, and now I want to be able to control it based on inputs from an object detection program. I wrote the program in Python ...
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1answer
38 views

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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1answer
96 views

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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0answers
60 views

Waking Up Roomba Over Serial

Sorry if this is a noobie question, it's my first time posting on this forum... I've been trying to mod an old Roomba 400 series (model #4220) by adding a raspberry pi to it. (I know real original ...
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3answers
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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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0answers
41 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 ...
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1answer
207 views

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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1answer
198 views

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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3answers
48 views

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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1answer
53 views

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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1answer
36 views

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 ...
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1answer
180 views

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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1answer
43 views

Target Recognition for Microcontrollers

I'm building a device using microcontrollers, and part of the device necessitates target recognition. That is to say, if there are three targets, A B and C, I want my device to know when I'm pointing ...
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1answer
576 views

Aliexpress bought BNO055 UART connection

I bought a BNO055 module from Aliexpress which is shown in the picture below. I am able to read the IMU data in an Arduino nano from this BNO055 via an I2C connection. Now, I want to connect it to a ...
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1answer
124 views

Technologies needed for indoor and outdoor navigating robot

Before I begin, I should add that I am a complete beginner in robotics and hope that I can figure out where I should start by asking this question. I am trying to make a robot that is able to ...
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0answers
43 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 ...
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1answer
228 views

Help Interpreting Raspberry Pi GPIO's allocated to Robot starter kit called AlphaBot2

I am a complete newbie to robotics, so please excuse me if this is a simple question. I bought this robot starter kit and need help understanding which features are associated to which GPIO pins: ...
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1answer
36 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!
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1answer
80 views

Accuracy of hall sensor encoders on Raspberry Pi

I have 2 motors (JGA25-370) with hall-sensor encodes. They emit about 90-100 interrupts every 100ms, so 1000 a second. Which means I have an interrupt happening every 1ms. The motors are driven by ...
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1answer
237 views

Raspberry Pi Robot Car won't drive straight, right wheel is faster [duplicate]

My Raspberry Pi car bot will not drive straight at all. After examining and listening to the two motors, I noticed that the right wheel is a lot faster. I have matching wheels and the same code ...
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0answers
91 views

How rational is it to use Intel Realsense for my affordable indoor autonomous robot?

Right now, I am using ESP32 for the motors and planning to add either Raspberry Pi Zero or ARM Cortex-M4 (STM32) and use ROS with Intel RealSense RGBD camera. How sensible is it? I am not expert in ...
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1answer
293 views

Inductive Charging for Alphabot [closed]

I am looking into building a self-docking robot that can charge itself when needed. To accelerate the prototyping phase, I am considering AlphaBot2 with Raspberry Pi 3 B+ as a development platform. I ...
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2answers
500 views

How to move a Stepper Motor to a desired angle with raspberry pi?

I will be using stepper motor in 6 DOF robotic arm along with Servo motors. Unlike Servo motor ,I find difficult to control Stepper motor. I was earlier using only Servo Motors but due to lack of ...
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1answer
279 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 ...
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1answer
174 views

IRobot 690 - raw wheel encoder counts change with no movement command issued

I am using a Raspberry Pi 3, B+ pertinent libraries are WiringPi, with WiringSerial. Code is written in c. EDIT: the Serial connection is handled through GPIO 14(Tx) & 15(Rx), 5v (Tx) is stepped ...
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2answers
154 views

using motor controllers with Raspberry instead of Arduno. Is it just me or is everyone ok with bad sofftware support?

I bought a Roboclaw controller. Since then, have looked around for other. The software support seems to be the same (to me:sad) state. They all seem to provide Arduino code examples, however, then I ...
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1answer
165 views

raspberry pi operating a unipolar stepper motor with a L293D IC

I need some help with a project where I am trying to operate a unipolar stepper motor with a raspberry pi's using the 4 GPIO pins and using a L293D IC as an amp to get it to the operating 12V of the ...
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2answers
737 views

Radio triangulation with Raspberry Pi

Currently, I am thinking that since electromagnetic waves loose energy over distance, you might be able to figure out the relative distance to each of three radio "beacons" and use this information to ...
4
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2answers
1k views

Finding relative location of Raspberry Pi robot indoors

I would like to have a Raspberry Pi robot that can find its location in a room relative to an origin point. What methods would be cheapest? What would the most accurate be? Are there any others ...
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0answers
78 views

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 ...
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1answer
90 views

What other equipment or hardwares I should buy along with raspberry pi [closed]

I am planning to build some primary level of project like home made robot, which I need to explore an image recognition and path recognition(using four wheels vehicle). So I am looking to buy a device ...
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2answers
68 views

Compatibility of my quadcopter build

I am building my first quadcopter and have multiple questions. I am using a Crius MWC Multiwii SE 2.6 flight controller which will get input from a Raspberry Pi Zero. I have this 4in1 ESC and this ...
4
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1answer
634 views

How to handle power distribution on a robot?

Our team just finished the FRC competition and I am trying to learn more about robots in general. I'm trying build a robot in a similar setting than the FRC competition. However the RobotRIO is out of ...
2
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1answer
318 views

Adding ROS to Raspberry Pi car and teleoperation

I just completed a Raspberry Pi car setup shown in the image below. With my car now assembled, I can run a simple Python script put the necessary GPIO pins HIGH or LOW and moves the car around ...
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0answers
806 views

How can I send commands from raspberry pi model 3B to Seriously Pro 3 Flight controller? [duplicate]

I am trying to make a quadcopter that receives commands from my android mobile phone. I currently have the following: Raspberry Pi 3 Model B running on Raspbian. Pi Camera Seriously Pro F3 Flight ...
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1answer
92 views

hard realtime signal processing

I am going to realize a real time monitoring system for medical care and finally the system should make phone calls according to the severity of the result , I would like to know is it best to perform ...
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4answers
450 views

Path of the robot

I have built a simple robot which will move from a source to destination. I want to record a 2d path which the robot has taken in real time. Something which is similar to the image I have take.(...
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1answer
55 views

How can I run Tests/Simulations of Control and Motion Planning for a Bare Metal Robot?

I am using a raspberry pi to practice low level development with a differential drive robot; bare metal without an OS underneath. I've gotten to the point where I have a very small, single purpose ...
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2answers
424 views

Using ROS to control a CMM (Coordinate Measuring machine)

i'm a senior, i really desperate to find answers here. i am building a robotic arm with bunch of low-cost sensors , motors and other actuators. i'm using PI 3 as my Microcontroller. I need helping to ...
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1answer
497 views

Can I use another GPIO pin on the Pi 3 as a RX UART?

I accidently plugged 5v in to the RX UART pin 15 on my Pi, now I'm unable to receive communication on this pin from my connected device. I was wondering if it's possible to use a different GPIO pin as ...