![]() ![]() Let's explore the key features of the Nano ESP32: It covers all your needs to kick-start your IoT or MicroPython project with ease. Whether you're a beginner stepping into the world of IoT or MicroPython, or an advanced user looking to incorporate it into your next product, the Nano ESP32 is the perfect choice. ![]() As you turn the pot, the values will change, corresponding to the voltage at pin A0.Introducing the Nano ESP32, a powerful addition to the Arduino ecosystem that brings the popular ESP32-S3 to the world of Arduino and MicroPython programming. You will see a steady stream of numbers ranging from 0.0 - 5.0. Now, open Serial Monitor in the Arduino IDE by clicking the icon on the right side of the top green bar or pressing Ctrl+Shift+M. You can do this with the command Serial.println() in your last line of code − To scale the numbers between 0.0 and 5.0, divide 5.0 by 1023.0 and multiply that by sensorValue −įloat voltage= sensorValue * (5.0 / 1023.0) įinally, you need to print this information to your serial window. To change the values from 0-1023 to a range that corresponds to the voltage, the pin is reading, you need to create another variable, a float, and do a little calculation. In the main loop of your code, you need to establish a variable to store the resistance value (which will be between, perfect for an int datatype) coming from your potentiometer − In the program or sketch given below, the first thing that you do in the setup function is begin serial communications, at 9600 bits per second, between your board and your computer with the line − Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):įloat voltage = sensorValue * (5.0 / 1023.0) the loop routine runs over and over again forever: initialize serial communication at 9600 bits per second: the setup routine runs once when you press reset: Graphical representation is available using serial plotter (Tools > Serial Plotter menu)Īttach the center pin of a potentiometer to pin A0, and the outside pins to +5V and ground. Reads an analog input on pin 0, converts it to voltage,Īnd prints the result to the serial monitor. Coding in the Arduino language will control your circuit. Open the Arduino IDE software on your computer. The image on the right is the potentiometer. The image on the left shows the standard schematic symbol of a pot. A few different pot types, which can all be used for the same task makes the job harder. The variety of available pots is now quite astonishing, and it can be very difficult for the beginner (in particular) to work out which type is suitable for a given task. The pot as we know it was originally known as a rheostat (essentially a variable wirewound resistor). This change is (or can be) used to control anything from the volume of a hi-fi system to the direction of a huge container ship. It converts rotary or linear motion from the input operator into a change of resistance. PotentiometerĪ potentiometer (or pot) is a simple electro-mechanical transducer. 1 × 5K variable resistor (potentiometer)įollow the circuit diagram and hook up the components on the breadboard as shown in the image given below.The input is converted from analogRead() into voltage, and printed out to the serial monitor of the Arduino Software (IDE). This example will show you how to read an analog input on analog pin 0. ![]()
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