Collision detection and early warning system based on sensors and Arduino

This is a sensor-based system for collision warning. Such systems are one type of security development in the industry. Such a system is safe. Enables intelligent detection systems to identify the car’s hearing and hearing. The project needs to be understood according to the local Arduino situation. The whole project is explained in relation to […]

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Simulation software practical comparison

When it comes to SI signal integrity, the first reaction of many people is simulation, and the first question of many people is: What simulation software do you use? Before I put it aside, I tried to explain it, but now I don’t talk about it directly, try to do something, it’s better to do […]

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KiCad designs infinitely expandable LED light panels

I saw an open source project on Hackster.io – an 8*8 LED color light panel that can be infinitely expanded in 4 directions. The creativity is very good. It was designed by a company in Shenzhen. The design files are all open source, designed with KiCad, and the product name is IRM Mini. First look […]

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Use ESP32-CAM to build a digital door lock system controlled by face ID

Security is the number one concern of everyone today, whether it’s data security or the security of one’s own home. With the advancement of technology and the increasing popularity of the Internet of Things, digital door locks have become very common these days. The digital lock does not require any physical key, but it uses […]

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What circuit is used to realize the button function of the TV?

First, the circuit principle 3 wires realize 7 buttons, what is the principle? Directly on the circuit schematic diagram! There will be a little difference in the design of different TV manufacturers, but the basic principle is this: The schematic diagram is very simple. The main control chip on the “LCD TV control board” has […]

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Positive-to-Negative Converter Solution Based on LTC7149

Positive to negative DC/DC conversion (negative output) is widely used in LCD devices, OLED displays, audio amplifiers, industrial equipment, measurement tools, test systems, LED drivers, and battery chargers. In all of these applications, inverting converters must be compact, support high power, and accommodate extended input voltage ranges. The LTC7149 meets all of these requirements. Its […]

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8051 Microcontroller Pin Description and Basic Circuit

The basics of the 8051 microcontroller have been covered previously, including its history, features, packaging, and some practical applications. In this article, the editor will continue to introduce the 8051 microcontroller pin diagram, pin description and other details, including the basic circuit of the 8051 microcontroller. Of course, it will be easier to understand the […]

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Build a Line Following Robot Without Using a Microcontroller

A line following robot (LFR) is a machine that follows a line, which may be a black line or a white line. The follower bot is beginner friendly and easy to understand and build. While line follower robots are popular and common to build with Arduino or other microcontrollers, let's try to build the same […]

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How to make a drone radio controller with nRF24L01

nRF24L01 transceiver module The nRF24L01 is a wireless transceiver module, which means that each module can send and receive data. They operate at 2.4GHz, which is in the ISM band, so they are legal for engineering applications in almost all countries. When operating efficiently, the module can cover a distance of 100 meters (200 feet), […]

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How to make a quadcopter drone

This article will introduce a DIY quadcopter drone that you can make yourself. We'll assemble our drone frame, load the motors and ESCs, and then, we'll complete the circuit part by connecting the flight controller and radio receiver we created. The frame we will be using here is the DJI F450 Quadcopter frame. Other than […]

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