Questions tagged [servo]

A servo is a motor, commonly used in robotics projects. This tag is for questions about the servo motor when using it in robotics and other projects.

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40 views

Do I need to isolate the ground of the Pi from the ground of an external power supply powering multiple servos?

I have a Pi 3 Model B (powered by its ac adapter) sending multiple PWM control signals to up to 5 servos (SG5010). These servos draw usually 300 mA when they move and up to 1 A each when stalled so I ...
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1answer
44 views

What is the proper calculation of duty cycle range for the sg90 servo?

In all specs of this servo that I can find there is a range of 1000-2000ms of duty cycle, for 50 Hz frequency, for the full range of motion. For example: http://m.zonesutech.com/Content/upload/...
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1answer
68 views

How to power a Raspberry Pi and servo motors with one power supply

I'm building a robot using Raspberry Pi and several servo motors. I'd like to power all components using a single lithium ion battery. I've looked into using a motor driver hat, but it seems the motor ...
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1answer
18 views

Springboot and ServoBlaster

I am trying to control a servo from a web service. I have used Springboot and ServoBlaster library. Although these ways to handle the servo work as a standalone application, nothing of the above ...
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0answers
42 views

I wanna make a raspberry pi car using an RC car. I would like to know if the servo multiplexer is necessary? [closed]

I've asked this question in the Robotics Stack Exchange and I am asking here as this is kind of important and I need some answers fast. My apologies if this is rude or if it causes problems in any way....
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34 views

Why do my servos only work the first time

I Posted earlier about having problems with my servos that you guys helped me with and I'm really grateful for that. Now I'm facing an other issue with the servos: I have put them on my "robot" that ...
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1answer
41 views

How can you use pigpio to set a specific position for a continuous rotation servo?

Running my code with a normal 180 degree servo will move it to a user-specified angle and then hold it there. But when using a continuous rotation servo, it keeps rotating constantly for 500 <= ...
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3answers
89 views

Servo motor behaves odd

hello I Connected a servo motor to my Raspberry pi Zero W and used the example from raspberrypi.org: granpa scarer: Grandpa Scarer and the servo worked however after changing the value for: p....
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2answers
237 views

AdaFruit ServoKit CircuitPython Blinka Library Installation Problem

I'm follow along with a tutorial to get started with using CircuitPython to control servos on my RaspberryPi (https://learn.adafruit.com/adafruit-16-channel-pwm-servo-hat-for-raspberry-pi/using-the-...
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0answers
38 views

Servo and DC/Stepper Motor Hats Together

I am creating a robot with my Raspberry Pi 3 B+. For my project, I wish to use 2x NEMA 17 stepper motors for moving around, and 2x SG90 servos for managing pan/tilt of the head. I already have an ...
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2answers
269 views

What servo motors can safely be driven directly from a Raspberry Pi's GPIO header?

A Raspberry Pi's GPIO header includes power pins, and enough I/O pins to drive multiple servo motors. When using this header's 5V supply to power servo motors directly (rather than using external ...
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0answers
104 views

How to control servos on Arduino through Raspberry Pi [closed]

I have a couple of servos connected to an Arduino board, which is in turn connected to a Raspberry Pi (4) using an ethernet cable. Just wondering, in what ways can I control the servos on Raspian. ...
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32 views

Adafruit_MotorHAT PI4

I am trying to run the following the code on PI4. from Adafruit_MotorHAT import Adafruit_MotorHAT # pylint: disable=import-error import RPi.GPIO as GPIO # pylint: disable=import-error import time ...
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0answers
70 views

ServoBlaster on PI4

Could anyone make ServoBlaster work on Raspberry Pi 4? I was able to get it running on PI3 but the same code does not work on PI4.
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1answer
97 views

Is there a way to slow down servo movement speed?

Despite searching I was not able to find an answer to this question. I have a servo attached to a pin that moves an arm back and forth. The problem is that it moves too quickly. Is there a way ...
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0answers
51 views

Adafruit ServoHat importing PWM object

I am following the Adafruit page regarding the ServoHat for the Raspberry Pi. I am unclear what module to import to get the PWM class. This is the page about using the PWM class: https://learn....
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0answers
25 views

PiGPIO inconsistent when using servo

so I will do the following command once and it will work and then the same sequence of commands never works again. Any help is appreciated, thanks! The commands are to first arm some ESCs then ...
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1answer
86 views

MGR996R rotation angle

Basically I want to control the angle of the rotation of the servo motor but I don't seem to know how... From the tech sheet I know this motor shouldn't be a continuous one, any hint would be ...
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1answer
146 views

Why is pigpio library not moving my servo when the same pin number works perfectly with RPi.GPIO?

I am working on a self driving rc car project and I need a servo to steer my car. As I was getting a bit jitter with RPi.GPIO I tried pigpio library. I am using a Raspbery Pi Model B. But it won't ...
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2answers
209 views

Pin powered Pi crashes when servos move

I have been working on a circuit to power a Raspberry Pi and servo(s) from a single power source. The diagram below shows the basic configuration, although the 'AA battery' is actually two 18650s. ...
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1answer
41 views

How to connect components of an RC (and rPi) car to the battery safely?

I am building an RC car from scratch. I have a 6v motor with an appropriate mdb, a 5v hobby servo, a raspberry pi zero w, and an 2200mAh 11.1v 50 C battery. I will upgrade the motor to a higher ...
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1answer
108 views

Sg 5010 servo 360 degree modification not working [closed]

As per the video tutorials out there, I opened the motor, took out the potentiometer and measured its resistance at max. Its a b5k pot so it measured 5kohm I put 2.5k ohm from each pin (s and -) and ...
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1answer
131 views

Control function for a DC servomotor angle

I am using a Raspberry Pi 3B+ with servomotor shields to control multiple servomotors at once with Python. I know that the travel angle of a servomotor is controlled using PWM. So there exists a ...
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1answer
308 views

How can Rpi Python control motor drivers L293D or L298N?

It is dangerous to run motors directly from the Pi, hence we need a motor shield. I own an Adafruit arduino motor shield clone: https://learn.adafruit.com/adafruit-motor-shield Note: I'm aware about ...
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2answers
468 views

Control motors and servos simultaneously (Python)

I have a Raspberry Pi 2B+ and some knowledge of Python. I need to control a DC motor, two servos and a LED simultaneously. The requirements are: Must control two servos, a LED and at least 1 DC ...
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0answers
101 views

Raspberry Pi 3 Model B - Windows IOT - UWP C++ - Servo control?

So currently, I have already developed a uwp application in Visual C++. I ordered a raspberry pi 3 model b from Amazon and its expected to arrive on Wednesday. In my program, I have a button, when I ...
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1answer
679 views

Servo robot with keyboard control

I am currently creating a design project that involves controlling several servo motors for a raspberry pi 3. I want to use a keyboard to control the direction of the motors, and I am using curses to ...
0
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1answer
174 views

How to control Arduino Uno using Raspberry Pi after image processing is done?

I am working on a project which is basically a robot car to collect garbage after the image in front of it is determined as Garbage (image processing using Raspberry Pi). I want my car movements to be ...
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2answers
296 views

Servo motors not working as expected with Raspberry pi 3

I am developing a robot with raspberry pi model b along with three servo motors. I have two functions which are defined for obtain robot behaviours. In the first function my servos are working well. ...
0
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1answer
178 views

The servo keeps rotating forever

I have 3 servo motors in my robot arm controlled by Raspberry Pi3 B+. One of the servos is (HV5932MG) (Link: "https://www.banggood.com/JX-Servo-PDI-HV5932MG-30KG-Large-Torque-360-High-Voltage-Digital-...
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1answer
305 views

Stepper Motor Hat v0.1 - pre-soldered version

I am pretty new and have installed the referenced HAT. I followed the instructions, but it is not detected. I have power and a green LED on the board and when I turn it on and off the servos jump a ...
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2answers
379 views

Why does my raspberry pi zero w crashes when controlling a DC motor with an L9232D and a 9g Servo motor?

I use this simple circuit to control a DC motor with an L293D, and a 9g servo motor with a Raspberry PI Zero W: I use the simple following code to test the circuit: from time import sleep import RPi....
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1answer
492 views

Can a servo motor rotate to a specific angle? [closed]

I am using servo motor for some positioning. Let's said I want the servo motor rotate to a specific angle like 23 degree, is it possible to achieve using Raspberry PI? Did I need some sort of encoder ...
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1answer
290 views

how to solve this segmentation error problem

I am writing a basic code for a robot to follow the blue color and whenever I am running the code it gives that out put the y is :0 the x is :0 moving to the right moving forward Segmentation fault ...
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0answers
117 views

How to turn multiple servos by an angle using the Adafruit servo/pwm pi hat?

So I'm using a Raspberry Pi Model 3b and an Adafruit 12-bit PWM Servo/PWM Pi Hat on my project to control 6 independent continuous servos. I'd like to send in signals that would turn the servo by that ...
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0answers
330 views

Is it possible to connect a Raspberry Pi Camera Module V2 without any concern to the CSI Camera Connector?

I have recently tried to connect the Raspberry Pi Camera Module V2 to the CSI Camera Connector on the Pi. At first, it worked properly and we could capture pictures and record videos. As part of a ...
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1answer
437 views

Servo angle control using Rpi and android App

I am trying to control the angle of a servo motor via an Android app that I built, installed on my phone. My phone sends the angle data (i.e. -90 to +90 degrees) to the raspberry pi via a TCP socket. ...
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1answer
1k views

Control servo motor using a web server

So I'm trying to get this to work. I have a .py file that turns the servo, and it works, but I'm trying to run it through a browser. So I installed apache and php, and I made .php file which, when ...
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0answers
668 views

How do I speed up MG995 servo motor using PCA9685 motor driver?

I am using PCA9685 to drive a MG995 servo motor. I am using the following code to control the servo motor. import time,Adafruit_PCA9685 def elbow(): pwm = Adafruit_PCA9685.PCA9685() pwm....
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1answer
108 views

Connecting a servo to a Pi

I'm new to electronics and have run into a problem while trying to hook up my micro-servo to my Pi. I have a Rapsberry Pi model 3 B, a breadboard, a 6V power supply, and a TowerPro MG90S micro servo. ...
0
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1answer
462 views

SG90 servo is vibrating and heating when I try to control it using Raspberry pi 3

I brought a new SG90 servo and I tried to control it using my Raspberry Pi's pin 17 writing the following code on the terminal's python >>>import RPi.GPIO as GPIO >>>import time &...
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2answers
399 views

How to get pan-tilt servos quiet forever after first adjustments

I have a camera mounted in an Adafruit pan-tilt mini kit with 2 servos (SG92R). Installed python-smbus and i2c-tools. From raspi-config I enabled 5 Interfacing options P5 I2C. Also installed ...
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2answers
100 views

Raspberry controlled fraction collector - what would be the best set?

I was thinking about building a self-assembled easy to use fraction collector controlled by raspberry. A Fraction collector is a piece of equipment used in liquid chromatography which has some tubes ...
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2answers
903 views

Simultaneous servo control on RPi 3?

I am building a project wherein I'll be controlling four servos using the Raspberry Pi 3. I wanted to control each pair of servos simultaneously (as in, when one servo is moving to a specified angle, ...
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0answers
117 views

RPIO issue with servo

I've followed the instructions in the answers on GPIO/RPIO. I still get the following error: Traceback (most recent call last): File "/home/pi/Documents/Python_Ed/RPIO_server_test.py", line 1, in &...
2
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0answers
324 views

Multiple servo motors with serial commands

I am trying to control multiple servo motors with a Raspberry Pi. I am using a USB to TTL cable for this. I am currently sending following serial commands for the movement. --> gpio -g mode 18 pwm --...
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2answers
558 views

Problem with usb serial RPI -> Arduino

I'm working on a robot, more precisely on his head which have to track an human face. I'm using a RPI which will detect the face and then send to the Arduino the angles for both servomotors. I ...
0
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1answer
617 views

Can I power 2 Servos with Raspberry pi 3

I'm working with 2 servos (SG-5010) and I want to use my Raspberry Pi 3 to control those servos. Can I power those 2 servos with the 5V pins (pins 2 or 4 in rasp)? I'm powering my Raspberry Pi with a ...
0
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2answers
264 views

How would I control multiple solenoid locks?

I would like to control 16 separate solenoid locks using PWM (It is not imperative that the lock is 12V, it could be 6V for example). The PWM source is this 16-channel servo driver from Adafuit. Is ...
0
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1answer
1k views

Run servoblaster Python code

lately i installed servoblaster to my raspberry pi and then tried a simple python code ` import os import time os.system('sudo ./servod') while True: os.system("echo 1=100 > /dev/...