circuitgeeks
In this tutorial, I will show you how to connect a potentiometer with Arduino. First I will show the potentiometer reading on the Arduino serial monitor. Then I will use that data to control the brightness of an LED. Table of Contents1 Potentiometer Overview2 How Potentiometer Works3 Potentiometer as Variable Resistor vs. Voltage Divider4 How … Read more ➯
Push-button is a key component in most electronics projects. It is a very simple and useful component to add user interaction to your project. I am sure all of you used a push button before in day-to-day life. For example, a tv remote has push buttons to change channels and volume. In this tutorial, I … Read more ➯
In the previous Arduino LCD tutorial, you have noticed that the classic parallel LCD consumes a lot of pins on the Arduino. Even in the 4-bit mode, it requires at least 6 digital I/O pins on the Arduino. So in many projects where you use the classic parallel LCD, you will run out of pins … Read more ➯
The DHT11 sensor can measure temperature and humidity in the air. It gives pre-calibrated digital output, so you can interface with any microcontroller like Arduino, ESP32, Raspberry Pi, etc. You can easily use this sensor in your weather monitoring system or home automation system. In this tutorial, I will build a small circuit to interface … Read more ➯
In this tutorial, you will learn how to control a dot matrix LED display with MAX7219 using an Arduino board. I will use an 8×8 as well as an 8×32 dot matrix display in this tutorial to display text, characters, and scrolling texts. Table of Contents1 MAX7219 Dot Matrix LED Module2 LED Matrix Multiplexing3 How … Read more ➯
WS2812B addressable RGB LEDs are great for indoor and outdoor decorating purposes. It would be a great choice if you want to control 1000s of RGB LEDs using a single data line. WS2812B RGB LED only needs a single data line to control all the LEDs connected in series. In this tutorial, you will learn … Read more ➯
An OLED display is the best alternative to the character LCD. The OLED display looks very cool because of its thin design and high-contrast screen. In this Arduino OLED display tutorial, I will show you how to connect an OLED display with an Arduino and draw common shapes on it. How to draw custom graphics, scrolling … Read more ➯
The Raspberry Pi Pico is the latest addition to the Raspberry Pi family. But unlike other pi boards, it is not a Linux computer. It is a new microcontroller board with a powerful new chip the RP2040. RP2040 is a dual-core Arm Cortex-M0+ processor with 264KB internal RAM and support for up to 16MB of … Read more ➯
The Arduino Buzzer is a simple audio output device that produces tones, beeps, and alerts. It’s commonly used in alarms, notifications, timers, and interactive electronics to add sound feedback. In this tutorial, you’ll learn how to connect a buzzer to Arduino, generate tones using code, and create sound patterns. By the end, you’ll be able … Read more ➯
The Arduino PWM is very useful for controlling things. We can control the brightness of an led, speed of a motor, direction of a Servo motor, and many other things using PWM. In this Arduino PWM tutorial, you will learn about the Arduino PWM function and how to use Arduino PWM function to control the … Read more ➯
