Questions tagged [robotics]

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GPIO pins with pijuice hat

I am currently building a website controlled bb8 based on a raspberry pi 4b, and 2 12v motors controlled by a wma4000 relays module(4 relays, 2 for each motor are used to move forward and backwards). ...
Claus de la Guardia's user avatar
0 votes
1 answer
39 views

Undervotage detected while using UPS hat (b) on wheel robot

I am doing a mecanum wheel robot project included 2 motor drivers l298n. I use raspberry pi 4 GPIO to control the motor drivers and my power supply for rpi is an UPS hat (b). I keep receiving ...
Phạm Phương Nam's user avatar
2 votes
2 answers
246 views

Cannot use global variable in pio function

I am working on a project in which I need to control a brushless motor with a microcontroller. I have chosen the Pico as I already have some on hand and there is a high chance of it being completely ...
lpinfinity's user avatar
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0 answers
20 views

A Micropyhton abstract robot library for pi-pico based robot kits

I'm looking for a slightly higher level Micropyhon library for pi-pico based robot kits. There seem to be many simple robot kits with similar hardware on the market at reasonable prices, but the ...
NeilenMarais's user avatar
0 votes
0 answers
125 views

Freenove Camera not able to interface with Raspberry pi 4 + Ubuntu 20.04 LTS

I am trying to work on a project where I want to use ROS. However, I found that for using ROS Noetic, I will need to install Ubuntu 20.04 on my Raspberry pi 4. Now, I bought a camera module (Freenove ...
Inderjeet's user avatar
0 votes
1 answer
161 views

DC Motor + goBILDA Speed Controller + Raspberry Pi 3b+ : Moves clockwise but won't move counterclockwise

I appreciate any help in this puzzling situation - I'm at a loss here. As part of a Robotics project, I'm trying to control a motor with a Raspberry Pi. The exact components I'm using are: A ...
Diego Alves's user avatar
0 votes
1 answer
76 views

Mecanum Robot for Pico

I'm trying to build the Keyestudio mecanum 4WD car for pico for a summer camp I run for high schoolers. I have no programming knowledge or background, and neither do the kids. I've been following the ...
Joanna Gannon's user avatar
-1 votes
1 answer
216 views

How to detect the position and rotation of objects in Python?

I'm building a robot that needs to detect the position and rotation of multiple trained objects from a single image. For this I'm using my Raspberry Pi 3B with Raspberry OS 64-Bit. I tried Localizer ...
JakesMD's user avatar
  • 107
2 votes
0 answers
49 views

Real time video processing in raspberry pi 2

Hi i am planning to do real time image processing using opencv python for a differential drive bot using raspberry pi 3 B, what are the factors do we need to consider(like video stabilization, etc...) ...
DEVAPRASAD S's user avatar
1 vote
1 answer
1k views

Connecting 4 digital MEMS microphones with raspberry pi 4

I want to add 4 INMP441 digital MEMS microphones to the GPIO pins of Raspberry pi 4 to perform sound source localisation. Here's a reference link to the mic: https://robu.in/product/inmp441-mems-high-...
Thokachitchu Jai chandra Raju's user avatar
0 votes
1 answer
512 views

Threading using Python in Raspberry Pi for GPIO inputs

My self-working on encoders of differential drive robot, I need to read the speed and position of wheels using two encoders simultaneously. I have used the threading library in Python even though I ...
DEVAPRASAD S's user avatar
0 votes
1 answer
1k views

Using raspberry pi to control 4 stepper motors

For a hobby-project I would like to control 4 nema23 stepper motors for a Cartesian cnc-like setup using a raspberry pi. According to this tutorial, it should work in principle using a TB6600 Motor ...
Teris's user avatar
  • 103
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0 answers
44 views

Use raspberry pi pics to record rpm on a wheel

I would like to use a raspberry pi pick to record the rpm of a wheel on a rc car. There will be a contact on the wheel, and a contact on the body of the car. As the wheel turns, if the two contacts ...
user112167's user avatar
-1 votes
1 answer
168 views

IBT-2 causing voltage drop on battery but 0 voltage on motor(s)

I want to start by saying I know it isn't a code problem as it was working before but after I hooked up another motor controller (from a different manufacturer) it caused my motors to briefly spin up ...
monkey's user avatar
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0 votes
1 answer
409 views

Controling high voltage servo motors with raspberry pi 4

I'm building a bipedal robot and I'm using 7,4V servo motors that can consume 3.9A of current (Feetech FT5835M) and RPi4B, how can I control these servos? I'm thinking about using Adafruit 2327 HAT ...
Bocian's user avatar
  • 9
-1 votes
1 answer
97 views

Two-way connection between a PC and Pi via Ethernet cable

I'm planning to establish an ethernet connection between a PC and a robot(with the Pi on it and the robot and PC being around 30ft apart). I would like to use the Pi to control operations onboard(Pi ...
iceninja3's user avatar
2 votes
1 answer
174 views

Misreadings from hall sensor after using a motor controller

I am measuring a hall sensor included in a motor. A Raspberry Pi 3b+ controls a Sabertooth 2x32 motor controller through radio Signal (ppm) and the Sabertooth output is connected to the motor. I get ...
capitnakl's user avatar
1 vote
0 answers
303 views

MG996R jittering

I'm working on a project of a camera connected to a robotic arm that moves when my face is about to get out of the frame. I'm using 3 Tower Pro MG996R servos and they are connected to my raspberry pi. ...
amit's user avatar
  • 11
2 votes
1 answer
1k views

How to make the motion of a servo motor smoother?

I am having some trouble with controlling the motion of the servo motor. When I run my code, the servo motor moves in the specified range but the motion seems a bit erratic. I would be really grateful ...
Usman 's user avatar
  • 21
1 vote
0 answers
309 views

How to make/get a proportional flow control valve [closed]

I want to use hydraulic flow to proportionally vary the resistance of a rpi controlled exercise machine. The victim would rotate a positive displacement pump where the inlet and outlet ports are ...
Steve Dutky's user avatar
-1 votes
1 answer
253 views

Odd results when using RPi.GPIO's event_detected() function

I've recently been experimenting with RPi.GPIO's event_detected() function, to check if a button (connected to the gpio) has been presssed. However, for some reason events would randomly be detected. ...
Stalemate's user avatar
1 vote
1 answer
259 views

I am making a line following robot with obstacle detection

so I have made a code where it detects an obstacle it brakes elif it runs the trackok.py code the problem is when it starts the trackok.py code it stays in it and doesn't stop even if an obstacle is ...
bahaa's user avatar
  • 11
0 votes
0 answers
48 views

Best way to send movement commands to pi robot over network from computer

I am planning a project in which I will be controlling a robot I will make from my laptop. I am connected to the pi over an ad hoc network. I want to be able to give it simple key board commands (like ...
Nicokofi's user avatar
  • 101
0 votes
1 answer
67 views

what servos should I use? [closed]

I want to make a humanoid robot with my pi, but am unsure of what servos I would need. I did some research and found out they a rated in kg/cm, so I calculated the weights they would be lifting, ...
user avatar
0 votes
1 answer
105 views

How do the GPIO Pins actually work?

I recently started learning how to use the raspberry pi for robotics but ran into some problems early on as people, everywhere I checked, were using the gpio pins with no explanation as to why they ...
GrindZ48 's user avatar
-1 votes
1 answer
95 views

Autonomous vehicle with SLAM

I have an idea for a project I want to build but I do not know how to do it. I hate cutting grass every week so I would like to build an autonomous lawn mower. I have a (quite) small garden and I ...
SCdev's user avatar
  • 9
1 vote
3 answers
472 views

How can I control a small electro-magnet and sense when it has picked up an item? [closed]

I'm looking to build an autonomous robot car, but needed to set it a difficult problem beyond following a line or avoiding edges. I've settled on getting it to learn to collect objects and drop them ...
Nick's user avatar
  • 776
1 vote
3 answers
644 views

How to send sensor and analog data wirelessly to Pi without internet

I'm fairly new to all things RPi so im still trying to get my bearings. I want to control a robot from a distance, about a Mile approx. I have build the robot and i have no problem controlling it ...
Bernardo Belmar's user avatar
2 votes
1 answer
295 views

Is full disk encryption viable on a Pi3

I have a need for full disk encryption on two Pi3s with will be used for an autonomous robotic project. I see LUKS is available for Buster with remote unlock, which is necessary since the 2 Pi3s will ...
Nick's user avatar
  • 776