Questions tagged [potentiometer]

Electronic component forming a three-terminal resistor with a sliding contact. Acts as a variable resistor / voltage divider, manipulating the amount of current flowing through it.

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63 views

Question regarding using Arduino and MIDI

I'm using an Arduino Leonardo for sending MIDI In and Out messages to Ableton Live. Components include a Potentiometer, a Capacitive Touch Sensor, and a DC Motor, which I'm powering with a L298N Motor ...
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66 views

Assistance with PID DC Motor Acceleration

I'm working on a project that uses an Arduino UNO and a motorized fader to send and receive MIDI data from my computer/musical keyboard. I'm trying to set up my motor with PID to control the position ...
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51 views

DC Motor Acceleration with PWM

I'm not sure why this has been so difficult for me, but I'm trying to control the acceleration of a 10v DC motor with an Arduino UNO and an L298n H-Bridge. Using a 12v regulated power supply to power ...
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1answer
23 views

Touch Sensor and Potentiometer - Need some help

I'm using an Arduino Nano with a capacitive touch sensor and a potentiometer. I'm trying to get my code to differentiate between three different program states. One is when my touch sensor is NOT ...
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63 views

Potentiometer only display analog voltage value of 1023 in proteus

I connected arduino uno with lcd and potentiometer to display the analog value (this is the basic of my project). However the value displayed on the lcd remain 1023 eventhough i have vary the ...
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35 views

Source of cheap, small, ~360 rotation sensors (potentiometer, hall effect, etc) for tiny steering wheel like input

I am trying to make a custom remote control with a knob (kind of like a really tiny steering wheel) that automatically returns to center when input is released (kind of like a joystick). I only want ...
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28 views

BLDC motor erroneous running with digital potentiometer

I am using this digital potentiometer http://www.farnell.com/datasheets/31917.pdf to control a BLDC motor with Arduino Mega. When I am running the below code, the motor runs at the lowest speed when I ...
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78 views

Can anyone help be get readings off of my potentiometer with a push of a button?

Hi I'm trying to get my Arduino Uno code to work with a in a specific way where if I push a button, the Arduino will read the raw potentiometer value once and if I don't push it nothing happens. https:...
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212 views

How can I add a potentiometer and more buttons to my custom game controller?

I'm new to using Arduino, and know next to nothing about programming. I'm currently trying to add a potentiometer, and possibly a few more button inputs to my 3D-printed guitar controller project It ...
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4answers
290 views

Can I control LED brightness with potentiometer without any code, as well as reading the potentiometer value?

I am just getting back into electronics and have started to play around with making my own button box. I am trying to control an LED's brightness using a potentiometer, while also reading the ...
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482 views

RGB LED using potentiometer and push button

I'm currently working on an assignment which has to turn on an RGB LED using a potentiometer and button. The problem I currently have is that the button is supposed to change the color I want the LED ...
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274 views

ATTINY85 and POT

I need to read a potentiometer value from an ATTINY85. I have big fat 10K POT but for this use case I need it to be very small so I used a salvaged 2.4K one, the kind that is soldered directly onto a ...
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32 views

What is this potentiometer for?

I am working on an anemometer project using Arduino. I don't know barely anything from Arduino and I am following this tutorial. I have some doubts on the making part. This is what I have to make: ...
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1answer
43 views

Using HC-SRO4 sensor and looking for obstacle

I am working in TinkerCAD, I want to design and simulate a circuit in which there are following components: 1.)An Arduino board. 2.)A potentiometer 3.)An HC-SRO4 sensor 4.)An LED. So, the sensor ...
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73 views

Tapered log potentiometer to linear formula

I have a tapered log 10K potentiometer. I would like some function which returns tapered log value to linear values. The potentiometer is a slider. When connected to the Arduino the wiper displays the ...
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1answer
77 views

very small PWM when timer says zero

I'am getting a little PWM signal when my potentiometer is at zero and OCR2B always reads zero on the serial monitor. My LED has low forward voltage but I still get a little PWM on the pin when I prob ...
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1answer
65 views

Program fails to check for potentiometer input/changes

I've been having a problem with my code that my potentiometer will not change values in a method. I'm having a random number generated, and if it is a specific number, print a statement and ...
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2answers
318 views

Arduino PID controller for Triac

I am designing a new soldering station which will use a 24 V ac soldering iron. I started to make some research and I designed a few steps of the soldering station. I will use a 24Vac/100VA toroidal ...
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0answers
41 views

Potentiometer motor system is not working

I am setting up a potentiometer system that includes a motor that is supposed to spin with the potentiometer changing the speed of the spin and a button to reverse it. I checked the coding and it is ...
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119 views

Multiple devices on 5v pin

Im soldering an LCD screen to my Arduino as I don't have a breadboard and plan on it being permanent. I'm wondering how I should connect the potentiometer (to control contrast). If I connect it as ...
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2answers
184 views

Substitute multiple potentiometers for push buttons and single potentiometers

this is my first post here. For some time I have been struggling with a problem and would like to know if anyone has a solution to share. I am building a 4 tone sequencer, where I use 4 ...
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2answers
111 views

Arduino Uno lag in simple loop

I have a simple Arduino sketch which I have been playing with on my Uno. The idea is simple, the user turns a potentiate (pin A2), when they pass a certain threshold a LED is turned on (pin 7). Here ...
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105 views

Set slide potentiometer values

I am using the Grove - Slide Potentiometer (http://wiki.seeedstudio.com/Grove-Slide_Potentiometer). How can I set the potValue so that at maximum it will 128? int potPin= A0; int readValue; int ...
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91 views

How to use a potentiometer to access data within a 2 dimensional array?

I'm trying to create a 2D array of notes that are split into 3 scales. There are 3 notes in each scale. There are 3 buttons to play each note and I want to use an available potentiometer to select ...
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1k views

How would i add PID control to this servo motor control program. potentiometer

I have installed an AutoPID library (by ryan downing version 1.0.3) to my arduino IDE, but im not sure which parts i will have remove to get the PID to control the servo angle. Thanks for the reply, ...
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64 views

Trying to get a servo motor to move to certain setpoints when a control potentiometer shows certain values

Here's my Code so far: void setup() { Serial.begin(9600); } void loop() { float a; float angle; int setpoint; a = analogRead(A1); angle = map(a, 0, 1023, 0, 180); if ( (angle>0) &...
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2answers
599 views

ignoring potentiometer value variations

I've got a 50k potentiometer connected to an Arduino Uno. The user should adjust the hue of an Adafruit NeoPixelStrip. I've got the following code inside the loop function: int hue = analogRead(...
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61 views

Cycling through switch states

I'm making a desk lamp out of 2x WS2811 strips (attached to the triple ports at top right of board below). The brightness of the strips is controlled by a potentiometer, and the colour by a switch. ...
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1answer
63 views

Arduino UNO - Fluctuation of inputs and outputs

I have some pots (100K) on my Arduino board. When I raise the value of one those resistance other pots are being changed (Not too much but it's significant). I have no idea what's going on. I tried to ...
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1answer
68 views

Possible to have different torque levels on MG966R servo with Rotary Potentiometer?

I want to apologise first and foremost, and say that I am very new to Arduinos! I wanted to control the torque on a MG966R servo so that I can separate it into 4 different torque levels. I read that ...
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1k views

Value read is not changing while rotating pot in arduino?

I am trying to read voltage using analogRead in Arduino Uno from a voltage divider circuit consisting of 1k resistor and 10k pot. The Pot used is bourns 3296. The values obtained only range from 1011 ...
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152 views

Digital Potentiometer (TPL0501) Control Issues

I'm using SPI library in my code for controlling a digital potentiometer (TPL0501) with Arduino Mega. The code I have is: #include <SPI.h> byte address = 0x80; const int CS = 53; int SCLK = ...
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357 views

PWM Control, How to stop LED from Flickering?

What is required is controlling the brightness of an LED using both Buttons and a Potentiometer, Button A: Increase Button B: Decrease /Dim Potentiometer: Increase and Decrease, This however must ...
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1answer
661 views

Control 2 ESC with a potentiometer with arduino

I have 2 ESC (electronic speed controller) which control these brushless motors: Hobbyking Donkey ST3511 Brushless Motor I would like to make them work with a poentiometer, under arduino. I have a ...
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83 views

Component with controllable resistance from Arduino? [closed]

I'm new to Arduino and building circuits, and was wondering if there is a type of component, or some other way to do the following task: I want to control the resistance of a circuit from my computer ...
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1k views

analogWrite is not working - while trying to control DC motor speed

I'm trying to control the speed of DC Motor using Arduino R3 NPN Transistor (2N2222A331) 10k potentiometer 2M ohm resistor Diode I'm not using L298N and I'm also not using L293D. DC motor is ...
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1answer
224 views

I2C potentiometer mess

I bought a few MCP4651 dual 8 bit I2C pots for a project. After browsing the arduino libraries and finding nothing,"No big deal" I thought to myself ... I've already written I2C libraries for other ...
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3answers
337 views

Trying to use an LCD 1602 to display, but I don't have a 10 KOhm potentiometer

I'm following this tutorial page and I don't have a 10k ohm potentiometer on hand. Could I replace it with resistors to simulate a manual setting and replace the resistors to adjust to a new settings. ...
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59 views

Brushless Motor and Electronic Speed Controller Initialisation Issues

I have been trying to make a brushless motor, working in synergy with an electronic speed controller, to work, however, all I have been achieving is the motor vibrating at a specific potentiometer/...
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1k views

How to operate a brushless motor & ESC with an Arduino

I have recently bought two brushless motors (Brushless-300w-6-5-Wheel-Tyre-Motor-Hoverboard-Swegway-Board-Replacement-Part) along with two ESC (https://hobbyking.com/en_us/hobbyking-40a-esc-4a-ubec....
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2answers
156 views

Arduino potentiometer (external power) with amplifier

i am trying to make some kind of an amplifier. I got an amp board but want to read out the value from the potentiometer. The problem is that this pot is connected to the amp and has to be connected to ...
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1answer
913 views

How to use map function

if(pin10==HIGH) val=analog.read (potpin); val=map(val,0,1023,0,180); servowrite(val); else val=map(0,1023,0,90); ...
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1answer
83 views

How to regulate a led on-board? [closed]

There is blink project consisting 3 sections: 1 - regulation of the led brightness using a potentiometer 2 - whenever: the button is pressed - the led is on - the button is released - the led is ...
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1answer
863 views

Dimming multiple leds with pot meter [closed]

I'm working on a small project. I have 13 leds which need to be controlled individually (turn on or turn off); Since I don't have 13 pwm pins I used a potentiometer to change the brightness. This ...
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2answers
124 views

Stacking adc's when making an midi controller ( lots of potmeters)

I'm making a midi controller with the Arduino uno. It contains approximately 50 analog inputs with potentiometers. I have enough MCP3008 adc's here but I have no idea how I connect 2 or more adc's to ...
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89 views

Potentiometer reading out letters

My potentiometer reads out t's or u's in my serial. I believe that my potentiometer is wired correctly. What am I missing? Here is my code: #include <VarSpeedServo.h> VarSpeedServo servo; ...
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1answer
41 views

Digital selection for gain control not working instead showing 0

I am making a device which will have a button to measure the input and another button to reset and the inputs are variable analog values(0 to 5v) and output is a ratio of two analog input voltages. It ...
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3answers
4k views

LCD display weird characters

Im a newbie. I have a problem with displaying text in LCD (16x2). It shows incorrect message in the lcd. Here is the code and the picture that gives the wrong output : Kindly help Thank you. #include ...
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1answer
217 views

Two pots controlling 2 servos — odd behavior

I'm trying to control 2 servos with 2 pots. I thought I could just amend the tutorial code by adding in the extra pot on a1 and extra servo on d8 (am using a Nano). #include <Servo.h> Servo ...
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2answers
3k views

Dim a led using a NPN transistor

I know there are a lot of questions about this topic, but I've tried everything and any possible guide online without success. I want dim (increase and decrease the brightness) some leds (3.5 Watt ...