This site uses a common anode LED digital tube, and the common anode means that the 7-segment display code shares the positive power supply. Principle diagram:As can be seen from the above figure, if ...
[i=s] This post was last edited by paulhyde on 2014-9-15 08:58 [/i] 1. Stopwatch for time limit 2. 2-meter tape measure for measuring distance and specified distance 3. Photoelectric sensor for tracki...
First of all, let me explain my intention. I want to hook the keyboard interrupt (0x31), but I heard that the interrupt vectors of keyboards are different in different Windows systems. Is there any wa...
I accidentally saw GigaDevice's new GD32F470xx series. The MCU in this series has TFT and network port, which means it is benchmarked against the advanced models of NXP and ST. NXP LPC1788 is the core...
When debugging the zigbee module, I encountered a high packet loss rate in the communication between zigbee modules. This zigbee module is a dual-channel 780Mzigbee. The packet loss rate on the front ...
[i=s]This post was last edited by paulhyde on 2014-9-15 03:44[/i] I would like to ask, is the speed displayed on the internal display screen of our motor vehicle displayed at all times? How is the spe...
This program is written to simulate the serial port hardware mechanism. When used, a timed interrupt can be set with a time interval of 1/4 baud rate. The receiving function is called once for ea...[Details]
Abstract: In order to generate a stable excitation signal, the design of a digital frequency synthesizer is implemented on FPGA using Verilog hardware language. The design includes accumulator, wav...[Details]
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
DSP (digital signal processor) is used more and more frequently in today's engineering applications. There are three main reasons for this: first, it has powerful computing power and is capable of ...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
As a simple and practical input device, buttons have been used in various microcontroller application systems and are ubiquitous. However, the buttons used in different practical occasions are also...[Details]
This controller uses PIC16C54 single-chip microcomputer as the controller, and it is very easy to use: just connect a telephone line to the loudspeaker through the controller, and you can rem...[Details]
At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[Details]
Printed circuit boards ( PCBs
)
are used in most electrical products
. If a PCB has low
insulation resistance
(IR), the performance of the circuits on the PCB will be greatly reduced...[Details]
Capacitors
are basic components in various electronic devices and are widely used for bypassing, coupling,
filtering
, tuning, etc. in electronic circuits. However, to use capacitors,...[Details]
Problems such as the depletion of natural resources, air pollution, traffic congestion, and rising fossil fuel prices have forced societies and individuals to seek alternative means of transportati...[Details]
Motors, especially those with brushes, generate a lot of noise. This noise must be dealt with if the appliance is to meet the requirements of EMC standards. The means to solve EMC are nothing more ...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[Details]