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Easy Basics Project 007a Potentiometer and LED

of Acoptex.com in UNO

Basics: Project 006a

Project name: Potentiometer and LED

Attachments: program A and program B

In this project, you needed these parts :

1.Aruduino Uno R3 (you can also use the other version of Arduino)

2.Potentiometer

3.Arduino IDE ( you can download it from here  )

4.Jumper cables

5. Resistor 1 pc 220 Om 

6. Breadboard

7. LED 1 pc (red)

Understanding the potentiometer

A potentiometer, informally a pot, is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider.[1] If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.
The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.
Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick. Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load.

A potentiometer, informally a pot, is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.
The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.
Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick. Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load.

Electronic symbol

Potentiometer symbol  (International)

Potentiometer  (US/Canada)

There are a number of terms in the electronics industry used to describe certain types of potentiometers:

  • slide pot or slider pot: a potentiometer that is adjusted by sliding the wiper left or right (or up and down, depending on the installation), usually with a finger or thumb
  • thumb pot or thumbwheel pot: a small rotating potentiometer meant to be adjusted infrequently by means of a small thumbwheel
  • trimpot or trimmer pot: a trimmer potentiometer typically meant to be adjusted once or infrequently for "fine-tuning" an electrical signal

A potentiometer is a simple knob that provides a variable resistance, which we can read into the Arduino board as an analog value. 

Signals and connections of potentiometer

Signals and connections of Led

Connect the long leg of the LED (the positive leg, called the anode) to the other end of the resistor. Connect the short leg of the LED (the negative leg, called the cathode) to the GND.

Wiring

The following picture shows the needed connections with the Arduino Uno 

Same connections but different programs.

See movie here: https://youtu.be/RBFzmP0XLuM

Step by Step instruction

  1. Plug your Adruino Uno board into your PC and select the correct board and com port
  2. Open up serial monitor and set your baud to 9600 baud
  3. Verify and upload the the sketch to your Adruino Uno.

Libraries:

  • No libraries needed for this project

Program/Sketch

Program A attached here and program B attached here.



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Published at 07-05-2017
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