Raspberry Pi

The function of the ADC is to convert analogue signals into digital signals. Since computers can ultimately only recognise binary numbers, external analogue signals are often converted by the ADC into digital information that it can recognise. In Raspberry PI, a common application is to convert a changing voltage into a digital signal. Raspberry Pi […]

In my last work, the buzzer stayed on continuously, which was not in line with the real situation, so this time I want to change the buzzer’s sounding pattern so that the buzzer’s sounding frequency is synchronised with the frequency of the LED blinking. Main Code: The main idea of this code is to use […]

I thought about it for a few days and decided that although I could control the sound of the buzzer, it wasn’t good enough. I remembered that when the alarm is set off in the general movie, there is not only the alarm sounds but also the red light flashes at the same time, so […]

Applications in our daily life: In daily life, many electronic devices will alarm when they encounter malfunctions, and the sound is often easier to draw people’s attention than the indicator light, the buzzer can help us to achieve this function. There are two types of buzzers, they are active buzzers and passive buzzers. Active buzzers […]

Keys are the simplest and most common input device. As shown from the diagram below, KEY1 is connected to Raspberry Pi pin 12 and KEY2 is connected to Raspberry Pi pin 13. The other end of the key is connected to the ground. So when the key is not pressed, a high level (1) is […]

There are three LEDs in PiHAT, namely R (red) Y (yellow) and G (green). A library called “gpiozero” will be used for coding, it is a Python library tailored for Raspberry PI GPIO programming, which makes programming Raspberry PI very easy. Common commands for the LED Wiring Diagram As we can see in the wiring […]

Install Raspberry Pi Imager which allows you to flash the operating system into the SD card Put the MicroSD card into the MicroSD card port of the computer Choose Device: Select the model of Raspberry Pi purchased Choose OS: Choose the latest operating system Choose Storage: Select the MicroSD card that was inputted into the […]

I got a preliminary understanding of the structure of the board today after I went through the datasheet of the Raspberry Pi. It included many components with different functions, which made up a small computer system. CPU (Central Processing Unit) The Raspberry Pi uses BROADCOM for its CPU and the model number it used was […]

My raspberry PI has finally arrived✌🏻! I opened the outer box and checked the board out. I also bought a Raspberry Pi Hat along with it. It is an extension hardware that can greatly improve the learning capability and playability of the Raspberry PI by connecting with 40 GPIOs.

Through two years of studying computer science in high school, I had a basic overview on the knowledge about software, hardware, and network. For example, I learned about the basic structure of the CPU (Vonnewmen’s architecture) and programming languages (python). These information are all theoretical knowledge, even though they are very useful and important, it is […]