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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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19
votes
6answers
5k views

Robot never goes straight

I am using 2 identical DC motors and a castor wheel. The motors are connected to L293D motor driver and are controlled by RPi. The robot is not going straight. It veers off to the right. I am ...
2
votes
1answer
4k views

Quadcopter controlled by Raspberry Pi

I have: Raspberry Pi 3. Pi camera. CC3D flight controller. I have already developed a Python script that decides whether the quadcopter dron has to turn left/right, move straight on or to stop. Is ...
7
votes
3answers
549 views

Including a RaspberryPi within a robot… Does this allow for a “universal API”?

I know this is a broad statement, but when you've got support for both TCP as well as a full fledged computer on board (to integrate/run an arduino), does this essentially allow for anything that ...
2
votes
1answer
587 views

Quadcopter PID Controller: Derivative on Measurement / Removing the Derivative Kick

Good day, I am currently implementing a single loop PID controller using angle setpoints as inputs. I was trying out a different approach for the D part of the PID controller. What bought this ...
0
votes
7answers
2k views

Good Microcontrollers/SOCs for a Robotics Project [closed]

I am looking for a starting point for my project, preferably using popular systems (ones there is a lot of support for). I have an Arduino Uno, a Raspberry Pi, and a lot of willpower :) Anyone here ...
28
votes
12answers
13k views

Can ROS run on a Raspberry Pi?

Can ROS run on a Raspberry Pi? ROS is resigned to run on a network of machines, with different machines, even different cores on the same machine doing different jobs. Can one of those machines be a ...
17
votes
4answers
8k views

Single camera vision and mapping system

Some time ago I saw a demo of a small 'toy tank' with a single camera mounted on it. This tank was able to drive around the floor and detect objects and then move/steer to avoid them. The interesting ...
5
votes
2answers
4k views

Quadcopter PID Control: Is it possible to stabilize a quadcopter considering only angle measurements?

Good day, I am a student currently working on an autonomous quadcopter project, specifically the stabilization part as of now. I am using a tuned propeller system and I also already considered the ...
5
votes
1answer
2k views

CC3D - Replacing RC emitter with an RPi

I am trying to control a quadcopter using te OpenPilot CC3D board and a RaspberryPi. The main idea was first replace the signals from the RC emitter to the CC3D RC receiver for an RPi connected ...
3
votes
1answer
564 views

Choice of a motor for robotic arm

This is my first post here, so hello all. I really hope I can learn a lot from you guys. I am trying to build a robotic arm to carry an object and put it inside of different boxes that are placed in ...
1
vote
1answer
1k views

Help sending serial command to Roomba

I have a Raspberry Pi hooked up to a Roomba 560's serial port. While going over the spec, I noticed movement controls weren't as simple as I expected. I can't send bytes larger than 255, but, ...
3
votes
1answer
638 views

Is a Raspberry Pi processor powerful enough for a mobile chatbot?

In general, is a Raspberry Pi processor powerful enough for a mobile chatbot? I want to make a small mobile robot that is like a chatbot. Is a Raspberry Pi processor powerful enough for any type of AI ...
3
votes
2answers
952 views

Depth map with Raspberry Pi

Is it possible to get two images from the Raspberry Pi camera mounted on a remote controlled bot and have them sent to a computer through Wi-Fi and process the images in the computer to generate a ...
2
votes
2answers
1k views

PID Tuning for an Unbalanced Quadcopter: When do I know if the I-gain I've set is too high?

Good day, I am working on an autonomous flight controller for a quadcopter ('X' configuration) using only angles as inputs for the setpoints used in a single loop PID controller running at 200Hz (PID ...
2
votes
5answers
552 views

Raspberry Pi quadcopter thrashes at high speeds

I am attempting to build a Raspberry Pi based quadcopter. So far I have succeeded in interfacing with all the hardware, and I have written a PID controller that is fairly stable at low throttle. The ...
2
votes
1answer
320 views

Flipping an old manual switch (physical one) [duplicate]

I Have an old audio amplifier that has those switches to turn it on. I'm looking for the simplest motor/robotic arm (or any other relevant component) to control this switch - eventually via Raspberry ...
0
votes
1answer
84 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 ...