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Arduino Tutorials Digital / Analog Teaching you by example how digital and analog input works. The Digital / Analog input tutorials will combine lessons learned from the first three chapters. We will use a button and potentiometer to explain everything. By the end of this chapter, you will be able to make use of the digitalread()

What You’ll Learn:

In these digital() tutorials you will learn about:

How to use a pushbutton to control a LED
make a toggle switch to turn a LED on / off
to make use of the debounce method
add a counter to your pushbutton
having multiple states with one push
Read an analog input pin, map the result, and then use that data to dim or brighten an LED by PWM (Pulse Width Modulation).
How to control a LED with a Potentiometer

Arduino Tutorial: 4.0 Introduction into digital / analog pins

Arduino Digital / Analog

The following tutorials cover the Arduino’s ability to sense digital and analog inputs and to respond to these inputs. The upcoming tutorials introduces techniques that you can use for these inputs. We explore the use of a digital input by using the example of a button. Furthermore, we will look…

Arduino Digital / Analog

In this tutorial, you will learn how to control a LED by pushing a button. We have learned in earlier tutorials. how to automatically blink an LED with Arduino. That program will run as long as there is a power for the Arduino. Let’s go a bit further and try…

Arduino Digital / Analog

In the previous tutorial, we already learned how to turn a LED on with a button. The problem arises that if the button is unpressed the LED turns off. If you would like to keep the LED on after the button is pressed we need to remember the state of…

Arduino Digital / Analog

In this tutorial, we will control 3 LEDs with a single button switch. I have added 2 new LEDs to pins 9 and 8. Every time the button is pressed the switch is closed and sends a HIGH signal. If this happens, the LED will light up in a row.…

Arduino Digital / Analog

In this Arduino tutorial, you will learn how to reliable detect if a pushbutton is open or closed. Pushbuttons can generate spurious open/close transitions when they are pressed due to mechanical or physical issues. These transistion may be read by the Arduino as multiple presses. To overcome this problem we…

Arduino Digital / Analog

In this tutorial, we will read the values of a keypad without using libraries. This tutorial is for those who want to understand how the keypad works. Firstly, we will learn how the keypad works. In other words, how a keypad detects key presses. An easy example is given by…

Arduino Digital / Analog

In this tutorial, we will use the analogRead() function to read the voltage on a potentiometer. All Arduino Boards have a 10-bit analog to the digital converter. This means that it will map input voltages between 0 and the operating voltage (5V or 3.3V) into integers between 0 and 1023.…

Arduino Digital / Analog

Recall that analogRead() returns a value between 0 and 1023. If you don’t then please read Reading analog values. We will use the input value we are going to read from a potentiometer as the output value for the analogWrite() function. In the last tutorial, we divided the value received…

Reading analog values with Arduino

Introduction into visual output with Arduino

Learn to code

ARDUINO & CODES

Arduino - Getting Started

Arduino - Basics

Arduino - Serial Communication

Arduino - Digital / Analog

Arduino - Visual Output

Arduino - Motor Control

Arduino -LCD Displays

Arduino Digital / Analog

What You’ll Learn:

Arduino Tutorial: 4.0 Introduction into digital / analog pins

Controlling a LED with a button for Arduino

Making a toggle switch button with Arduino

Creating multiple button states with Arduino

Reliable detecting a switch with Arduino

Reading a 4 x 4 keypad with Arduino

Reading analog values with Arduino

Using the map function for analog results with Arduino