error #10234-D: unresolved symbols remain error #10010: errors encountered during linking; "timer.out" not built >> Compilation failure gmake: *** [timer.out] Error 1. How can I correct such errors? T...
[font=微软雅黑][size=4][/size][/font] [font=微软雅黑][size=4][b]Li Yubai - Professor[/b][/size][/font] [hr] [font=微软雅黑][size=4] Li Yubai, male, professor, received a bachelor's degree in engineering and a mas...
I was bored today, and I happened to have a small OLED screen. So I used STM32L053R8 to write a display program. First, let me introduce OLED. The full name of OLED is Organic Light-Emitting Diode, an...
Everyone, I want to buy a PDA, the operating system is Wince, with Ethernet interface and secondary development function. Can you recommend one? What kind of PDA do you use? I would like to learn from...
This is my first time drawing a board. I encountered some minor problems. Please help me. The board is based on a 51 single-chip microcomputer. I found that I had missed a resistor after the PCB file ...
I have an AMD LX800 industrial control board, but the manufacturer doesn't provide BSP. I had to download one from eeworld's download channel. After a simple configuration, I debugged it. After loadin...
When the WDP500-2A plane grating monochromator is used to test the emission wavelength of a high-power laser diode at different currents, the matching of the laser diode has the disadvantages of lo...[Details]
System design is a complex process. It is not enough to just use ICs. There are many details to consider. This article uses a high-fidelity music playback system as an example to introduce how to s...[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]
The data collector of the automatic weather station is generally designed based on a single-chip microcomputer or a PC/104 bus controller. It has the characteristics of good compatibility with PC, low...[Details]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[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]
0 Introduction
With the rise and continuous improvement of the solid-state lighting industry, light-emitting diodes (LEDs) have become an alternative lighting technology and are gr...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[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]
12v Lead Acid batteries used in trucks, cars, RVs and uninterruptible power supplies are usually rated at 12V. This circuit monitors the battery, the charge and discharge curves, gives the cu...[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]
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]