Programming questions related to controlling a servo motor through programming.
A servo is a hardware mechanism that moves with signal input. It uses negative feedback to control itself precisely.
Questions tagged [servo]
297 questions
14
votes
1 answer
How do I parse a page with html5ever, modify the DOM, and serialize it?
I would like to parse a web page, insert anchors at certain positions and render the modified DOM out again in order to generate docsets for Dash. Is this possible?
From the examples included in html5ever, I can see how to read an HTML file and do…
kesselborn
- 533
- 5
- 7
5
votes
2 answers
Arduino servo without library
As education exercise on sending digital signals, I'm trying to code the pulse train for a servo without using the servo.h library.
The servo is a 9g micro servo. Hardware is correct, as many examples using servo.h work fine.
I have the following…
Playing with GAS
- 565
- 3
- 10
- 18
5
votes
2 answers
Cannot control servos through 32-servo-controller on Aurduino Duamilanove
I have servo (TowerPro sg90) connected to 32 servo controller (this one) through UART interface (RX-TX, GND-GND).
Seller provide documentation how to connect and control my servos, but it isn't work.
Servo work if I connect it indirectly to…
rkyr
- 3,131
- 2
- 23
- 38
3
votes
1 answer
ESP32-cam with servo control won't work. Arduino IDE
I've an ESP32-cam and want to controll a servo. My code compiled without error but doesn't work.
There are two files involved, a .ino and a .cpp. The .ino seems to work right because the servo contributes to his start position 90° at startup but…
Jo Pare
- 41
- 5
3
votes
0 answers
Raspberry Pi Gpio Continuous Servo Motor Control
I am making a node.js raspberry pi app where I need to control a servo motor. When I press the up arrow, it sends a post request to '/fb' and on key up it sends a post request to '/fbTerm'. Here is the code for post requests.
const express =…
Ank i zle
- 2,089
- 3
- 14
- 36
3
votes
2 answers
RPI servo hat python3 library throwing error: 'board' has no attribute 'SCL'
No matter how I rewrite a simple python 3 servo test script for the Adafruit RPI servo hat, I get the following error.
Traceback (most recent call last):
File "servo_test.py", line 8, in
i2c = busio.I2C(board.SCL,…
harlansgs
- 31
- 1
- 2
3
votes
1 answer
Controlling continuous servo using python in Raspberry Pi，but the continuous servo can't stop
I'm trying to control a continuous servo(DF15RSMG) using python in Raspberry Pi, but the continuous servo can't stop. Code as follows:
import RPi.GPIO as GPIO
import time
import signal
import atexit
atexit.register(GPIO.cleanup) …
XiaoJin
- 67
- 1
- 6
2
votes
0 answers
"The function start is not being executed" error when trying to run the same piServoCtl (Raspberry Pi Servo) function multiple times
Helpful link: https://github.com/naoto64/piServoCtl
The code is copied below:
from piservo import Servo
import time
myservo = Servo(12)
def rotate():
myservo.write(180)
time.sleep(1)
myservo.stop()
rotate() # running the function once…
SamsUncle
- 21
- 1
2
votes
1 answer
MG 996R servo Raspberry Pi angle control
I am using an MG 996R servo connected to a Raspberry Pi and an external power supply. I am using this code:
import RPi.GPIO as GPIO
import time
servoPIN = 17
GPIO.setmode(GPIO.BCM)
GPIO.setup(servoPIN, GPIO.OUT)
p = GPIO.PWM(servoPIN, 50) # GPIO…
Hamid Rajabi
- 59
- 1
- 8
2
votes
0 answers
Why is my RPIO servo pulse width off by a factor of 10?
I am working on driving motor controllers using a Raspberry Pi. I am using the RPIO library to give me the precise timing I need. I am not using the RPi.GPIO. When I run this code:
from RPIO import PWM
from time import sleep
servo = PWM.Servo()
#…
Waldo25
- 61
- 3
2
votes
2 answers
Servo Motor not moving properly in Proteus
I'm trying to control a Servo Motor with a PIC18f4550, but before buying one, I'm trying to simulate it on Proteus ISIS, but I'm getting some inconsistencies when setting the angle.
I've tried using a 20ms period and 1ms, 1.167ms, 1.333ms, 1.5ms,…
William Vernaschi
- 37
- 6
2
votes
1 answer
Pi4j: SG90 doesn't turn all the way to 180°
I have this SG90 servomotor (completely functional and new) that doesn't turn all the way to 180° (or 0°).It stops halfway when i try to make it go right to left (counterclockwise). I have checked 4 times the wiring and the hardware so the problem…
Akk
- 53
- 12
2
votes
1 answer
How to program a dead zone in arduino using the mapping function?
I'm using a PS3 controller to control a continuous servo array. I'm using the map function to write the servo position. The relevant part of my code is
servo1.writeMicroseconds(map(PS3.getAnalogHat(RightHatY), 0, 255, 1300, 1700));
My…
JumpinJunipers
- 23
- 2
2
votes
2 answers
python 3.x pyserial communication with arduino uno (servo control)
i have a trouble with serial communicate (python 3.x -> arduino uno).
when i run this code in python 2.5
python 2.5:
import serial
usbport = 'COM3'
ser = serial.Serial(usbport, 9600, timeout=1)
def move(servo, angle):
if (0 <= angle <= 180):
…
seung won lee
- 21
- 3
2
votes
1 answer
XBox One Wireless control of Servo using Analogue Stick withevdev
I'm using Evdev to read the XBOX ONE inputs of A, B, X, Y to great success. However, I am battling to pick up the Analog Stick inputs. Can anyone help me with the Python code for this?
I am trying to control a Servo.
This is my code so far, it works…
Adam Lowery
- 81
- 3