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Questions tagged [pwm]

Pulse-width modulation (PWM) is varying the duty cycle of a rectangle wave, usually with a constant frequency.

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how to normalize PWM if the value exceeds the maximum speed limit

I have implemented inverse kinematics for nonholonomic mobile wheeled robots, and the RPM range of the motor that I used is -50 to 50, while for PWM is from 1300 to 1700. But in certain cases, the RPM ...
Michael Julyus Christopher M.'s user avatar
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Arduino Uno can only produce certain PWM duty cycles

I'm using the servo library on an Arduino Uno R4 to control a servo. However, when I use Servo.microSeconds(), the duty cycle only changes with every 100th ...
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pinMode PWM: Unable to do this when using /dev/gpiomem. Try sudo?

I have been scouring the web for a few hours now and I cannot seem to fix the problem. I am using RPi 4B 8GB RAM with Ubuntu 22.04 server. When trying to run C++ code with wiringPi to activate PWM I ...
owhenthesaints's user avatar
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How to: implementation problem with Position control on a 3 Wheels robot (2 motorized) with velocity profile of trapezoid

I'm trying to apply position control in a wheeled robot, controlled by an arduino mega. The robot has two wheels powered by two dc motors (1 motor for each wheel) and one castor wheel. In order to ...
maneedos's user avatar
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Motor driver PWM frequency

What can happen to the motor driver if I give input PWM frequency more than the rated(capacity)? I'm using Maxon motor with specifications: Operating on 24V Speed: 600 RPM Nominal Torque: 21 Kg-cm
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Serial command receiving failure with Arduino and Adafruit shield from C# desktop application

For a long time I use Arduino Uno controller and Adafruit Servo Shield with 6.3V 1000 uF capacitor, powered with 6V 8Amp adapter to control 8 digital servo motors ...
user24233's user avatar
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Relation between PWM frequency and torque

I am using Pololu G2 18v15 to drive a maxon motor. The motor is supposed to drive a load in a sinusoidal trajectory against gravity with maximum torque of 0.0634 NM with max speed of 5 rpm. I am using ...
vacky's user avatar
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are mg996r servo failures common?

I am new to the small servo area. I bought a eBay 6DOF Robotic Arm, and 12 mg996r servos to go with it. Using an arduino and I2C PCA9685 16 X PWM board, with the example code from adafruit, I set up ...
hackware's user avatar
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H bridge duty cycle vs maximum voltage

I've just burnt out an L298n H bridge, not surprising, but I thought it'd be ok for low load testing. Apparently not. I'm considering ordering these to replace them - Hilitand DC 5-12V Motor ...
Ben Bird's user avatar