Questions tagged [robotics]

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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 ...
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1 answer
46 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 ...
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2 votes
1 answer
78 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 ...
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1 vote
0 answers
149 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. ...
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2 votes
1 answer
495 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 ...
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1 vote
0 answers
179 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 ...
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-1 votes
1 answer
114 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. ...
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1 vote
1 answer
157 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 ...
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34 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 ...
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0 votes
1 answer
60 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, ...
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0 votes
1 answer
81 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 ...
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-1 votes
1 answer
60 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 ...
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1 vote
3 answers
179 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 ...
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1 vote
3 answers
279 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 ...
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2 votes
1 answer
144 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 ...
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