In previous sections, we used the GPIO output function for the LED lights. This time, we will finally need to use the GPIO input function. The human infrared sensing module is quite simple to use. After completing our experiment, we will combine it with the previous buzzer to create a simple human detection alarm. 1. … Read more
The buzzer is a common device, which can be divided into passive and active types. Choose different types of buzzers based on project requirements. In a recent project, we used an active buzzer. As usual, we first designed the circuit board and then proceeded to programming. The schematic in the project is as follows: If … Read more
How did I come up with the idea of making a music box? With International Women’s Day approaching, QiuQiu said he wanted to give me a gift, and also a big present. QiuQiu made a small bag by himself and asked me to buy some chocolate online (he promised to pay with his pocket money … Read more
Here is the micro-course video. Please click the play button to watch. Task 1: Understand the structure and working principle of the buzzer. Task 2: Match the buzzer hardware with the software. Task 3: Use programming to play music with the buzzer. If you are interested in the Arduino game controller, you can message us … Read more
In embedded system development and some fun electronic projects, using C language to control a buzzer to play simple scores is a very interesting practice. It allows hardware to “sound”, adding lively audio effects to our creations. Today, let’s delve into how to achieve this fun functionality. 1. Working Principle of the Buzzer Buzzers are … Read more
Introduction In the previous article, I made a lantern that lights up when lifted, preparing decorations for the New Year. This article will focus on safety, creating a smoke alarm using a combustible gas detector. In daily life, smoke alarms are typically installed in areas with a high risk of fire, such as kitchens, laboratories, … Read more
Today, Teacher Cheng from the Mark Pen Design Study Abroad continues to bring knowledge about Arduino. In previous articles, many common sensors have been introduced, such as ultrasonic sensors, human infrared sensors, and photoresistors.This time we will talk about a slightly more complex module – the SD card module. Actually, when it comes to music … Read more