Arduino Control Servo Speed With Potentiometer

Copy the example code below into an Arduino program. We have written a tutorial for Rotary Encoders using a Microchip microcontroller but now would be a good time to make an Arduino UNO version. By using a potentiometer (or any analog sensor), it’s possible to directly control your servo with the Arduino in the same way that you’d control a mechanical claw at the arcades. Servo motors have three wires: power, ground, and signal. // get servo library. Find this and other Arduino tutorials on ArduinoGetStarted. Servo with RGB indicator. Bluetooth based dc motor speed and direction control using arduino , In this embedded systems project, we are going to control the motors using the HC-06 Bluetooth device and the android app. Tutorial: Potentiometers with Arduino and Filtering October 28, 2015 Mads Aasvik Arduino Tutorials , Maker Tutorials In this blogpost we will go through what a potentiometer is and how they work, how to connect it up to an Arduino as well as describe a common problem with regards to potentiometer usage and a workaround to that problem. Open source RC transmitter software for the Arduino. This tutorial explains how to control servo by using in-built library of Arduino. It consists of a suitable motor coupled to a sensor for position feedback. By tracking the position of the knob with your RedBoard, you can make volume controls, speed controls, angle sensors and a ton of other useful inputs for your projects. Joysticks combine two variable resistors called potentiometers. I use Write() in order to control the speed and the direction of the servo motor using this function. If you substitute a continuous rotation servo in the circuit you can use the potentiometer to control both the speed and direction of the motor's rotation. For this lecture you will need to: Have SG90 (or similar) 2 or more servo motor. Linear as well as other ease movements for all servos are provided. PWM stands for Pulse Width Modulation and it is a technique used in controlling the brightness of LED, speed control of DC motor, controlling a servo motor or where you have to get analog output with digital means. Connect the side by side pins to 5V and GND on the Arduino respectively, and the single pin on the opposite side of the potentiometer to the analog 0 pin on the Arduino. Use Potentiometer to Control a Servo Motor. h library and then use attach function NameOfTheMotor. Inside there is a pretty simple set-up: a small DC motor, potentiometer, and a control circuit. A standard SG90 servo has a range of 0-180 degrees. The motor is attached by gears to the control wheel. In this tutorial, we will cover - Testing servo motor. Controlling servo with potentiometer. 5ms (1500µs) pulse signal (position "90" when used with the Arduino Servo library), then slowly turn the middle-point adjustment potentiometer until the servo stops rotating. How to control a digital potentiometer using Arduino UNO A potentiometer is a 3-terminal device used as a variable resistor. Working of a Servo Motor. Let’s name ours gate_servo. 3) Must short onboard GND & External DC source GND. Hello everyone, Welcome to this tutorial where I show how to control DC motor speed using a potentiometer, the l298n motor driver and an Arduino board. This does not make use of the servo library. We've discovered that servo control signals are a series of high pulses separated by low resting states. The only problem is that the only sketches that I can find refer to the Servo Sweep sketch that runs the motor speed up and down. 1) to this:. Working of a Servo Motor. This combination has all the same functionality as the L12-I plus USB support, speed control, sensitivity control, position control, and. Using a jumper, connect the middle pin of the trimpot to the analog pin A0 on the Arduino Dock using a jumper wire. In the figure given below two servo motors are connected to 1 Arduino. Hence, we use transistors to form an H-bridge to drive the motor. I turned his Perl code into. Use Potentiometer to Control a Servo Motor. If the two push buttons were pressed the motor will not rotate as well. Read about 'Control Servo Motors using an Arduino and Simulink' on element14. Control of continous rotation servos is similar to normal servose. In the end they suggest to try to use a potentiometer to control the speed of the motor. This example makes use of the Arduino servo library. For controlling the speed of DC motor we have various methods, but in this project we are controlling DC Motor speed using PWM. In this example, a potentiometer (or other sensor) on analog input 0 is used to control the rotational speed of a stepper motor using the Arduino Stepper Library. Then, Lets assume the servo potentiometer is approximately set to what should be the middle position for the servo. Start with the right Kinetix® servo drive, a compact single-axis drive for simple applications or a high-performance multi-axis servo drive that fits seamlessly into your Integrated Architecture. one to control direction and speed of the servo, the other to control how long the servo spins. • This applies for all servo motors and potentiometers. Sample code 11-1 //Project eleven controllable servo #include // insert the Servo. It has got two examples of servo control to give a better understanding of servo control. Use Motor drivers (such as L298, L293D) to drive power from external sources to run your motor. Hence, we use transistors to form an H-bridge to drive the motor. The circuit diagram is shown below. Working of a Servo Motor. If the speed is 0 the motor will not rotate even the push button is pressed. This project can be very useful when you want to control the pan and tilt of a sensor connected to the servo. Hello everyone! I need some help. Upload Sketch. Arduino Tutorial: Servo Potentiometer Control - Beginner Project Drone How. Use the code above as an example, but be sure that the servo centre value is correct. This POT can be used in Audio Applications like Tone Control, Volume Control and variety of other Experimentation activities. With the help of Rasmus blog post I could generate this checksum in Arduino. To control the motor the stepper attaches to the driver board with 4 data lines and power. At the end of this tutorial, you should be able to control spinning direction, acceleration, speed, power and shaft position. And white for data I tested the servo using the example that comes in the Arduino IDE, which uses a potentiometer to control the engine speed: The program below you can find on the menu File -> Examples -> Servo -> Knob :. In the figure given below two servo motors are connected to 1 Arduino. In this tutorial we will learn that how to make an algorithm for DC Motor Speed Control using Arduino UNO. You will be able to control it forward and reverse. The Arduino has a great servo library, but we found while making our TextSpresso machine that the servo library wouldn’t play nice with our stepper motors. This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer. The Arduino Servo SG90 is a great starter item if you're interested in making things move with your Arduino. Task 4 - Control the Servo Motor Position via a Potentiometer. It could be applied for. To get you started, in today's blog, we will cover 2 ways you can control a DC motor using your Arduino and. This looks like what I need to tie my CMRI Arduino nodes to turnout control. Wondering if someone can help. Before this project I’ve never used Visual basic so if anyone finds any mistake in my code please leave a comment here and help me improve it. Arduino - Servo Motor. Arduino điều khiển DC motor servo bằng phương pháp điều xung qua biến trở & mạch cầu H - L298N. This example makes use of the Arduino servo library. Parts Needed: Arduino UNO (or Similar) Arduino Motor Shield; Small DC Motor; Potentiometer (I used a 5K ohm single turn) 4 Cell AA Holder (Or similar upto 12v. h library and then use attach function NameOfTheMotor. Simple Servo Control With Arduino: First connect the servo to arduino as shown in the figure. This article includes everything you need to know about controlling a stepper motor with the A4988 stepper motor driver and Arduino. The MD10-POT control circuit is designed to enable the speed to be controlled via a potentiometer (10K Ohm) which is included in the package. In order to manually control the position of the servo motor, we need to use a potentiometer. Grove - Servo. Introduction In this article, I am explaining about controlling the ServoMotor using Potentiometer in Arduino. As your rotate the potentiometer, its resistance. Now I just need to figure out how to fill in the blanks on the code to control my 4 turnouts. Power to servo motors is. This project can be very useful when you want to control the pan and tilt of a sensor connected to the servo. - Controlling a servo with the…Arduino requires just a few steps. Reading Potentiometer on Arduino. h library Servo myservo; // create servo object to control servo. Control a servo without using the Arduino servo library. If we don’t take measures, the servo moves at maximum speed. In this tutorial i'll show you how to use a potentiometer to adjust the LED brightness. The TX works fine, writes my protocol of servonumber/velocity/ the velocity is just a value that correlates to a speed and direction. • For example 3rd potentiometer, the corresponding servo at the receiver rotates. First leg of the potentiometer is connected to +5 volts. In this lecture we learn how to control 2 or more Servo Motors using Potentiometers. The Knob sketch This example shows you how you can easily use a potentiometer to move your servo to a specific degree. The third goes from analog input 0 to the middle pin of the potentiometer. h Arduino library allows the use of up to 8 servos moving asynchronously (because it uses interrupts). I am going to guide you through the process of making a circuit that will allow you to control a servo by turning a dial. This varying of volume will display on LCD and decrease or increase of volume take place via button (up for Increase button and down for decrease button). This project can control only three DC motors that’s because of limited PWM pins available in Arduino boards. In this project we control direction and speed of a 24v high current motor using Arduino and two relays. In this project, an Arduino based speed and direction control of DC motor without using Motor Driver IC is designed. Here, a 1500 microsecond pulse is generated by the Arduino which is equivalent to 1. In multiple example you learn how to control one or multiple servo with your Arduino or ESP8266 board. Controlling a Servo with a Potentiometer on Arduino. Typical specifications are speed, torque, weight, motor type, bearing type, dimensions, voltage and current ratings. That adjustable pulse width carries the servo setting information. attach and write are pre-defined methods that act on the servo object. Arduino as a Stepper Motor Controller – Speed and Position Control With a Potentiometer June 26, 2019 Mads Aasvik Arduino Tutorials Not long ago, we published a blog post related to this topic. In this lecture we learn how to control 2 or more Servo Motors using Potentiometers. Today we will use a linear potentiometer to control the speed of a DC motor; we will use the Analog read function alongside our potentiometer and the Arduino Uno. Now that the potentiometer and LED are set up, let’s connect them to the Arduino Dock so we can make them light up. Connect the black wire from the servo to the Gnd pin on the Arduino 2. How can i change PWM lineally with potentiometer ? Im using PWM for servo and motor speed on my RC formula I made. Sometimes keeping things simple is best! In this tutorial we will see how to move a stepper using only a regular Potentiometer. Speed control of any motor is always done y Pulse Width Modulation, abbreviated as PWM. h library Servo myservo; // create servo object to control servo. Potentiometer - Robotistan Potentiometer. This means that the feedback from the potentiometer will be disconnected. No Arduino stuff please. In the tutorial Servo Motor Control using Arduino, I will tell you step by step procedure for connecting the servo motor with Arduino and how to design a algorithm in Arduino software to control its angular position with the help of servo coded signal. The VarSpeedServo. Joysticks combine two variable resistors called potentiometers. However, I've noticed that because I'm not near the telescope, I can't tell what state. speed control of dc motor with pwm. Please read this article to know how to interface a DC motor with the Arduino board using the motor driver. 3) Must short onboard GND & External DC source GND. Use the code above as an example, but be sure that the servo centre value is correct. Also find the code at this Gist. Position and speed control of servo motor. It's the same type of control you'd use to change volume or dim a lamp. I bought the servo hat from Adafruit and a MCP 3008. // Servos are connectd to PWM Pins 9 and 10. Wondering if someone can help. Arduino UNO Tutorial 6 - Rotary Encoder. This tutorial explains how to control servo by using in-built library of Arduino. It can be easily interfaced with commercial rotator control units. In this tutorial, we will cover - Testing servo motor. It will go through the materials, setup of hardware, and the software coding. Connect the stepper motor and the LCD display to the Arduino. Find this and other Arduino tutorials on ArduinoGetStarted. This document outlines some of the logic for how to implement servo control with a potentiometer on an Arduino. In this article, you will learn how to control DC, Stepper, and servo motors by Arduino and L293D. This article will show how to control motor speed by PWM Hardware needed: 1. The MotorControl sketch To gain control of the speed of your motor whenever you need it, you need to add a potentiometer to your circuit. We have written a tutorial for Rotary Encoders using a Microchip microcontroller but now would be a good time to make an Arduino UNO version. Preparations Hardware. The USB interface of the Arduino board can be used to program the microcontroller and to exchange data with other computers. In this tutorial, we will cover - Testing servo motor. The program code demonstrates the functionality of the Arduino servo library commands and documents the steps necessary to make a servo arm sweep across its full range of positions. and variable speed control in a. You will be using either an Arduino or another kind of servo tester to help centre the potentiometer. To let the servo know which angle it should rotate we are going to make use of the same technique taken for PWM on the previous project. pulse is fed to the servo via a control line. Servo Motor Control using Arduino. Arduino Tutorial: Servo Potentiometer Control - Beginner Project Drone How. What you will need: For this project you will need: Arduino Starter Kit; OR; Arduino UNO; Servo motor (SG90. This post shows how to control a DC motor speed and direction using Arduino, joystick and L293D driver. Or don't connect the power pin of servo motors to Arduino. In this tutorial we will learn that how to make an algorithm for DC Motor Speed Control using Arduino UNO. Learn: how Rotary Potentiometer works, how to connect Rotary Potentiometer to Arduino, how to program Arduino step by step. You need: …. Inside the servo box is a DC motor mechanically linked to a position feedback potentiometer, gearbox, electronic feedback control loop circuitry and motor drive electronic circuit. Arduino from the servo we will be connected to the wiring. The PWM pins of the servo connectors on the Arduino motor. As your rotate the potentiometer, its resistance. It is a staple among the Arduino programming examples included when you download the Arduino IDE. We have used the 28BYJ-48 Stepper motor and the ULN2003 Driver module. you can enable PWM mode in arduino for speed. To use them on an Arduino as motors, all you need to do is figure out the “angles” that give you the right speed. For this lecture you will need to: Have SG90 (or similar) 2 or more servo motor. COMPONENTS. What is a servo mechanism? A servo mechanism consists of a motor, motor control system, a sensor, and a user input called the "SET POINT". Using Potentiometer 1 you can control the servo angle ranging from 0 to 180 degrees. PWM CONCEPT PWM speed control is a technique of transferring desired average power to the motor driver from arduino microcontroller by increasing or decreasing the pulse width of transferred square wave signal. There are instructions on how to do it on the Arduino website. Servo rotates from o to 180 degree. This document outlines some of the logic for how to implement servo control with a potentiometer on an Arduino. attach and write are pre-defined methods that act on the servo object. For controlling the speed of DC motor we have various methods, but in this project we are controlling DC Motor speed using PWM. At the end of this tutorial, you should be able to control spinning direction, acceleration, speed, power and shaft position. I’ve done similar before. Need more control of your DC motor? You can use the MotorControl sketch for the Arduino to put some input into a DC motor to give you full control of the motor on the fly. You will see that your first sketch will work very poorly with al large dead zone in your potentiometer. to run the simulation by your self Visit. Wire up a servo to the Arduino. I write this tutorial to show you how to control the direction, position, and speed of the SG90 9G Micro servo motor with the Arduino UNO board. Thanks to Arduino Servo library , controlling servo motor is a piece of cake. This looks like what I need to tie my CMRI Arduino nodes to turnout control. arduino driver 5. Control the wiring diagram for while you're using the previous topic gqwutrjh melina. Using a jumper, connect the middle pin of the trimpot to the analog pin A0 on the Arduino Dock using a jumper wire. The set point may be a motor speed, or the position of a driven component such as a rudder. You will discover how to control Servo motor with ESP32 and you will also ready to make a simple web server with a slider to control the position of servo motor in both positions. 0 which will allow me to control the speed of my servo motor with my potentiometer. It has got two examples of servo control to give a better understanding of servo control. We happily connected our stepper motors up to pins two through nine because we were using a stepper motor shield. In this Arduino project, we are going to build an automatic Speed Controller of DC Motor using LDR with Arduino. In this example, a potentiometer (or other sensor) on analog input 0 is used to control the rotational speed of a stepper motor using the Arduino Stepper Library. brightness using arduino and motor speed control using arduino. Click here to download the code: Controlling A Continuous Rotation Servo Code Click here to buy: Continuous Rotation Servo Continous rotation servos are a form of gear-reduced motor with forward and backward speed adjustment. It could be applied for. in the coding department you have to include servo. Servo's have high current requirement so when using more than one servo motor with the Arduino, it is important to connect their power connections to an external power supply as the Arduino may not be able to source the current needed for the servo. Now we can use an instruction like gate_servo. toggle menu. SparkFun is an online retail store that sells the bits and pieces to make your electronics projects possible. From this example we can understand the most basic servo motor theory and how servo motor control is achieved. "How does a servo work (PWM or PPM)?". First we will control brightness of LED through code and then we will control it manually by adding the potentiometer. We have used the 28BYJ-48 Stepper motor and the ULN2003 Driver module. Controlling a Servo with a Potentiometer on Arduino. Osoyoo UNO Board (Fully compatible with Arduino UNO rev. This LDR based Arduino project slows down the speed of Motor as the intensity of light falling on LDR decreases and vice versa. The Arduino Servo library or PCA9685 servo expanders are supported. Using my free SensoDuino app for Android you can turn your Android phone into a Bluetooth remote controller for Arduino Uno equipped with the HC-05 Bluetooth serial module (or comparable) and two pan/tilt servos. you can enable PWM mode in arduino for speed. 3D printed Gimbal. Now we can use an instruction like gate_servo. The TX works fine, writes my protocol of servonumber/velocity/ the velocity is just a value that correlates to a speed and direction. I'm using the servo library and especially the function servo. PWM stands for Pulse Width Modulation and it is a technique used in controlling the brightness of LED, speed control of DC motor, controlling a servo motor or where you have to get analog output with digital means. The joystick (PS2 Joystick) consists of two potentiometers (one for the X-axis and the other for the Y-axis) and a pushbutton. Control the. Control the wiring diagram for while you're using the previous topic gqwutrjh melina. Use Potentiometer to Control a Servo Motor. print("text") -- Control knob that changes resistance as it is turned. Having tried 500k, 10k and 500ohms, the motor stalled almost as soon as I turn the dial (a bit more leeway with the 500ohm but not much). Arduino 7 Segment LED Display Tutorial (TM1637 4 Digit) Here is Detailed Arduino 7 Segment LED Display Tutorial For the Beginners With Example Codes, Circuit Diagram Which Uses TM1637, Has 4 Digit. Arduino Servo-Potentiometer project. As your rotate the potentiometer, its resistance. attach(servo_pi);! - Send control signal my_servo_object. Audio control Television Motion control Transducers Computation. The PWM pins of the servo connectors on the Arduino motor. How to Build a Servo Motor Circuit (with Arduino) In this project, we will go over how to build a servo motor circuit using an arduino. Here the brightness of an LED can be controlled using a potentiometer. In this video you will learn how to control a servo using potentiometer (variable resistor) and Arduino. In other words, as I rotate the knob on the potentiometer the servo should rotate by the same angle. The Knob sketch This example shows you how you can easily use a potentiometer to move your servo to a specific degree. The servo expects a pulse every 20 ms in order to gain correct information about the angle. 2) DC motor control 3) Servo motor control 4) Robot control: Arduino and the iRobot Create a) Connecting the Arduino to the iRobot Create b) Getting sensor values from the robot c) Making the robot move: controlling speed with a potentiometer d) Putting it all together: simple robot navigation with bump and go. Projects 01 & 02: Reading a Potentiometer and Changing a Potentiometer Reading to a Percentage Components needed: Arduino Uno board. The following posts provide an indepth background to how the standard Arduino Servo library uses timers, compare registers and interrupt service routines to control upto 12 Servos. The T010051 digital continuous rotation servo module is a high quality servo with the standard TinkerKit 3pin connector to be plugged in the sensor shield (remember that the signal pin is always the centre pin). I have access to pretty much any machining equipment but don't have much knowledge on the electrical side of things. By using it as a "voltage divider", the Arduino can sense the position of the knob, and use that value to control anything you wish. This does not make use of the servo library. Arduino has got a library for servo control. A standard SG90 servo has a range of 0-180 degrees. But,three DC motor controls might be enough for most of the small projects. (Our eyes are better served with a logaritmic intensity, but never mind. Servo Motor speed changing. the blink rate of an LED). Relevant Tutorials: 1. we will use PWM signal from arduino to control the speed of brushless motor with a ESC. A potentiometer changes resistance as it is turned. Controlling servo with potentiometer. The VarSpeedServo. This microcontroller runs with a clock speed of 16MHz, it has 32 Kilobytes of program memory, 2 Kilobytes of SRAM and one Kilobyte of permanent memory. 22sec/60° • Speed at 4. my_servo_object. I am using 12 servo motors in the project and have to control them simultaneously. The 10k potentiometer is used to vary the speed of the BLDC motor, its output is connected to Arduino analog channel 0 (A0). The very simplest servomotors use position-only sensing via a potentiometer and bang-bang control of their motor; the motor always rotates at full speed (or is stopped). Working of a Servo Motor. Brushless dc motor control with Arduino code: Arduino pins 9, 10 and 11 can generate PWM signals where pin 9 and pin 10 are related to Timer1 module (OC1A and OC1B) and pin 11 is related to Timer2 module (OC2A). This project can control only three DC motors that's because of limited PWM pins available in Arduino boards. Use Potentiometer to Control a Servo Motor. How to Build a Servo Motor Circuit (with Arduino) In this project, we will go over how to build a servo motor circuit using an arduino. Extends Arduino Servo library for smooth servo movement. Welcome to this tutorial where I show how to control DC motor speed using a potentiometer, the l298n motor driver and an Arduino board. Sometimes it's not a bad idea, but more often than not it's an over-powered and somewhat frustrating way to go. By using a potentiometer (or any analog sensor), it's possible to directly control your servo with the Arduino in the same way that you'd control a mechanical claw at the arcades. D lights up (for one second ) when the target degrees have been reached. You will also use an arduino analog output(PWM) to control the speed of the motor by sending a number between 0-255 from digital pin of arduino. The other example, the Knob sketch, shows how to control a servo motor with a potentiometer. I think I got it. The Vcc is connected to 5v, Gnd is connected to Gnd and Signal pin is connected to pin 9. attach and write are pre-defined methods that act on the servo object. Use the code above as an example, but be sure that the servo centre value is correct. Wiring diagram is provided in video. A potentiometer, or "pot" for short, is a variable resistor. The MD10-POT control circuit is designed to enable the speed to be controlled via a potentiometer (10K Ohm) which is included in the package. Introduction This tutorial is an open source arduino project that teaches how to control Stepper motor using potentiometer i am going to use LCD 16,2 with i2 backpack to display the volume speed of the stepper. Unique link structure design and oxidation blasting surface treatment make its body more beautiful and cool. So, let’s get started with DC Motor Speed Control using Arduino UNO: DC Motor Speed Control using Arduino UNO. I have it all working the way I want almost (joystick controls, cw/ccw of motor & the joystick seitch controls the speed of the motor (slow, medium & fast). I uploaded the code to the Arduino but the servo won't stop. This time select Sweep from the Servo menu. So how can I do a speed control on a continuous rotation servo? A workaround that could be used would be attaching the position servo of the potentiometer to the slower secondary axis that is driven by the servo and so make the servo believe that this position is his one, not the direct servo output. It is designed for continuous rotation and is easily interfaced with any Parallax microcontroller. This versatile board has 2 x 5V servo ports connected to the Arduino's high-resolution dedicated timer to ensure jitter-free operation. The servo expects a pulse every 20 ms in order to gain correct information about the angle. Lots of people out there would like to do this but just don't quite have enough programming knowledge to get an Arduino to do this. We can control the servo motor by connecting the servo motor's signal pin to an Arduino's pin, and programming to generate PWM on the Arduino's pin. My goal is to control a servo with a potentiometer with my Raspberry Pi. I'm a NEWBIE started using Arduino with lot of dreams, To be true i'm not good in electronics but having so much eager to do something with arduino. Welcome - With just a few additions, I can control the angle of the servo with the potentiometer. It could be applied for. Is a there a similar way. Control of continous rotation servos is similar to normal servose. So I want to build an electric longboard. Power to servo motors is. The simple circuit used to control the servo with the Arduino Duemilanove does not need special explanations. 3) Must short onboard GND & External DC source GND. Reference Links: Arduino Servo Library Material Shown: Lynxmotion BotBoarduino Shield-Compatible Robot Controller Octopus Rotary Potentiometer Brick Lynxmotion 12A Multirotor ESC 1A BEC (With Connectors) Brushless Rotor. There are instructions on how to do it on the Arduino website. Welcome to this tutorial where I show how to control DC motor speed using a potentiometer, the l298n motor driver and an Arduino board. The brightness will be set based on the position of the potentiometer. Motor Control Using Arduino Standard servo motor control using Arduino is extremely easy. So I had to come up with a sketch to control a servo without the delay function. Controlling servo with potentiometer. Capabilities and Features. In multiple example you learn how to control one or multiple servo with your Arduino or ESP8266 board. One of the questions we commonly get asked is how to go about using an Arduino to control a motor from a potentiometer. Find this and other Arduino tutorials on ArduinoGetStarted. It listens over a serial connection for three-byte control commands in the format start_byte, servo_number, desired_position where the start_byteis always 255. One 10Ko potentiometer (variable resistor). With one potentiometer we can control the speed and direction of rotation of a DC motor. \$\begingroup\$ @PeterJ A continuous rotation servo simplifies speed control as well as eliminates the need to add a H-bridge and its requisite control GPIOs for direction control (there's an H-bridge inside the servo). This is called "pulse width. This document starts very basic, and then quickly gets the meat of servo control. The 10k potentiometer is used to vary the speed of the BLDC motor, its output is connected to Arduino analog channel 0 (A0). You can use your PQ12 -P as a Linear Servo using the LAC (Linear Actuator Control) board. The Servo Motor basically consists of a DC Motor, a Gear system, a position sensor and a control circuit. It's the same type of control you'd use to change volume or dim a lamp. A potentiometer, or "pot" for short, is a variable resistor. The benefits of interfacing MST_K12 with Arduino are: Software control by entering commands via the serial monitor ; Adjust the speed level with the ability to set a time profiles ; Switching on and off the motor; Storage of the adjusted regulation level. SET & GLUE SERVO POTENTIOMETER Micro Servo Potentiometer View. h library and then use attach function NameOfTheMotor. Arduino: Servo Motors // control lead of servo connected to pin 9 // reads the value of the potentiometer (value between 0 and 1023). This Tutorial Covers.