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.
132 questions
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LCD display connection without a resistor
Can run a LCD without a potentiometer or a resistor?
I don't have any.
Here it said to connect both:
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The control function is not sending out correct values
#include <MIDI.h>
int scale = A4;
int oct = A2;
int potval, octval,octval2=0;
int newnote, prevnote = -1;
int newpotval,prepotval=-1,potval2=0;
int trigr = 7; // Ultrasonic right
int echor = ...
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Why do I need to connect a potentiometer to a +5V source in 1602 tutorial?
I'm getting starter with the Arduino and I'm going through the classic tutorial, it says to connect the VO to a pot's wiper, and pot itself to +5v and ground, so I did.
I tuned it and it worked, but ...
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Why is my LED strip value always equal to 255 on my potentiometer?
I'm pretty new to Arduino and this is my first project I'm working on and I'm really struggling with why my code isn't working properly.
The LED strip should be able to adjust the colour with one ...
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Using Internal Timer Interrupt to Read Analog Sensor
I'm having difficultly using an internal timer interrupt with my Arduino Nano to properly capture a specific value from a linear potentiometer and then instantly stopping the actuator.
I basically ...
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Digital Pot with Arduino
I am a newbie in electronics. Please correct me if I am wrong.
I am replacing a pot with a digital pot (DS3502) in a circuit.
The Vcc of the circuit is 12V. But the digital pot can have a maximum of 5....
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Troubleshoot/Diagnose Arduino circuit
I've built the attached circuit with the following changes:
I used Arduino Nano.
I used 10K pot.
12V is connected to VIN pin (instead of RAW).
The Arduino was connected to the PC by USB for the use ...
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Avoid 1-LSB noise on ADC readings
I have a potentiometer connected to an ADC input of an Arduino Leonardo.
The ADC resolution is 10-bit (0..1024), while I need just 7-bit (0..127).
I use a simple filter to reduce the noise and then a ...
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Digital potentiometer DS3502 question
I am using adafruit DS3502 breakout board for arduino. When I follow procedure written in
https://learn.adafruit.com/ds3502-i2c-potentiometer/arduino
My serial display shows correct voltage values.
My ...
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Pls help with this prompt. I've been struggling last 2 days with this and its due tomorrow [closed]
"Use an Arduino, two potentiometers, and an alarm. Make one of the potentiometers act like a volume control, and make the other potentiometer control the tone that the alarm makes."
I added ...
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How do I control the speed of a 2-wire fan with an Arduino and only a potentiometer?
I am trying to vary the speed of a 2-wire fan by using a Arduino Uno and only a potentiometer.
Initially, I assumed that I could go about doing so by using a code that I used for dimming an LED. When ...
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How to connect Draw wire encoder to Arduino Uno?
Hello Stack Community,
I am new to Arduino, and I am trying to figure out how to connect a draw wire encoder to Arduino and collect data from it.
I have attached a link of the product that I currently ...
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How to control 1 servo with 2 potentiometer?
I have been building a RC plane completely from scratch using an arduino but I am fairly new to this.
Essentially I have been able to make my two arduinos communicate with each other so that when one ...
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Perform Volume Control on arduino speaker
I am following this guide to produce tones with the arduino:
https://www.arduino.cc/en/Tutorial/BuiltInExamples/toneMelody
This uses the tone() builtin function. The connections is that one pin of the ...
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ESP32 Potentiometer issue: Resolution mismatch of the potentiometer with unlimited resolution and reading the values with Wire.h
I have the problem, that the potentiometer goes from the range of 0 Volts to 3,3 volts. But within this range the measured value goes from about 0 to 65535 multiple times (over 10 cycles).
When I ...
