DIY Notes on LED emergency lights 1. Some LED emergency power products convert the energy stored in the battery pack into a 220V mains power inverter after a power outage, which is equivalent to the c...
Looking for a part-time job, VC, MCU, ARM embedded development. I have worked on projects based on microchip series, msp430 series, S3C44B0, AT91RM9200, ST710 and other MCUs, including power system mo...
[i=s]This post was last edited by paulhyde on 2014-9-15 09:04[/i] 1.1 Task Design and make a water level monitoring and control device. 1.2 Requirements 1. Basic requirements (1) The liquid level in b...
I have a few CC2640 boards, which are well soldered and have the programming interface exposed. I want to use them. I have never used them before, so I would like to ask you, are there any jlink, ulin...
I use IImage to display jpeg images in wince. If I don't exit the program, I can't delete the jpg file. What's going on? As long as a test() function is executed, the \\NandFlash\\test.jpg file cannot...
[b]I. Introduction[/b] As system power budgets continue to shrink, new low-power components are urgently needed. For communication infrastructure, circuit board cooling, chassis miniaturization, and s...
Microchip's PIC18F46J50 is a low-power, high-performance 8-bit USB microcontroller (MCU) using nanoWatt XLP technology. The current in deep sleep mode can be as low as 13nA, the operating voltage i...[Details]
Sailing is gaining more and more attention. How to use modern technology to assist training and improve competition results is particularly important. Considering the real-time data collection in t...[Details]
0. Introduction
In daily life, we often see some special-purpose vehicles. When these vehicles pass through intersections, they often obtain the right of way at intersections by temporarily op...[Details]
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
Two simple circuits are implemented to drive two LEDs from a battery powered microprocessor.
This design is based on a circuit that uses three resistors and a microprocessor I/O pin as an input h...[Details]
Microcalorimetry
is used to determine energy relationships. Microcalorimetry techniques are often required when performing calorimetric experiments with small sample sizes or slow heating rat...[Details]
The automotive lighting and signal control system is responsible for controlling the vehicle's lighting, signal lights, electric horns, reversing and brake buzzers. Traditional automotive lighting...[Details]
The typical fault troubleshooting listed below is for reference of maintenance personnel.
When the computer is turned on, the indicator light is off and there is no screen display
Mainte...[Details]
With the advocacy and implementation of the government's Safe City Plan, the security market has increasingly higher requirements for the clarity of surveillance images. Imagine that after a case o...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
Introduction
Nowadays, people pay more and more attention to the security alarm system, and people have higher and higher requirements for the functions and performance of the alarm. This paper prop...[Details]
LED is now known as the fourth generation of light sources. High-power LED has many advantages over traditional light sources in outdoor lighting.
1 LED lamps have high light efficiency
C...[Details]
Leakage current is generated by parasitic resistance paths between the measurement circuit and a nearby voltage source. This current can significantly reduce the accuracy of low current measurement...[Details]
DIY/Open Source Hardware
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