Feb 11, 2024 · An Arduino can control an electronic "variable resistor", also known as a digital potentiometer. Tutorial for the AD5171 digital pot.

This project shows how to use the Arduino with a MCP4131 digitally controlled potentiometer. This allows for a digitally controlled variable resistor which will have multiple applications (variable frequency filters, changing volume on an amplifier) Three demos are included:

Jun 26, 2014 · would I be able to achieve the resistance conversion using an arduino to alter the output to the fuel gauge? would I be able to take a resistance input from a water temp sender and convert to the necessary resistance for the water temp gauge? is there a particular arduino model that would be most suitable for my needs?

Aug 21, 2016 · I would like to build a variable resistor that can be controlled by Arduino. My plan is to vary resistance between the two values, i.e., 1 ohm to 10ohm, to continuously change the load for a small wind turbine.

Dec 12, 2020 · The X9C104 digital potentiometer module is a variable resistor whose resistance value can be set digitally by a microcontroller. It consists of 3 output pins (RH، RW و RL) which can replace a mechanical potentiometer which has 3 pins.

Dec 10, 2012 · In this lesson, you will start using the Serial Monitor to display analog readings, and then extend the project using eight LEDs from lesson 4, so that you can control the number of LEDs that are lit by turning the knob on a variable resistor.

If instead of three pins only two pins are used the potentiometer acts as a variable resistor. In the following picture you see the connection between the potentiomenter and the multimeter. The following video shows the resistances measured by the …

Sep 14, 2016 · The cheap-cheap way to control resistance with an arduino is with a vactrol. Simply put, you glue an LED to a photo-sensitive resistor, wrap the whole thing up until it's lightproof, then control the brightness of the LED using the PWM outputs on the arduino.

Nov 12, 2023 · I have a radio antenna that requires a variable termination resistor, (0Ω to 2000Ω). The resistor is 200ft from my radio in the shack. I'm starting to develop a plan to do this wireless.

By connecting the appropriate pins to the designated input/output pins of the microcontroller, you can utilize the variable resistor to adjust analog values, such as brightness or volume, according to your project requirements.