:loveliness::loveliness:It's the first time I use a perfboard to build a circuit. This time I added OLED and accelerometer to a perfboard. The basic hardware is almost ready. Now it's time to work on ...
[i=s] This post was last edited by fyaocn on 2017-3-10 16:57 [/i] 1. In the provided example package, there is already a hex file in motenv1, which can be downloaded directly to the memory. This proce...
STM32F429I-discovery+FreeRTOS+STemWin, I tried it a little bit, the screen refresh speed is still very fast, faster than LPC1788. I originally planned to port RTOS+emwin on the weekend after I came ba...
[i=s]This post was last edited by lb8820265 on 2017-2-21 18:22[/i] [font=微软雅黑][size=3]First, here is the video:[/size][/font] [align=center][media=swf,500,375]http://player.youku.com/player.php/sid/XM...
Disadvantages: 1. High price, compared with PLC 2. Low reliability, don't argue about this, it has been argued many times, related to the system architecture 3. Large size 4. Low precision and anti-in...
I used AVR to make a 4-digit LED dynamic display, and selected FDC6330L as the switch to control the COM end. When the result shows 1234, the first digit shows 2 in addition to 1, but the brightness o...
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
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]
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]
I. Introduction
In the field of power conversion, isolated converters (forward, flyback, and double-ended) with low output DC voltage all use MOSFET as the rectifier device. Since these devi...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
introduction
The emergence of high-performance, low-power embedded CPUs and high-reliability network operating systems has made it possible to implement applications with large amounts of comp...[Details]
Vertical cavity surface emitting lasers (VCSELs) are gradually replacing traditional edge emitting lasers, especially in low bandwidth and short-distance communication systems where cost factors ar...[Details]
A standard cell
is an electrochemical
cell
used as a voltage reference standard in many electrical standards laboratories
. If properly maintained, standard cells are very stable. The ...[Details]
1 Introduction
Water resources are the basic conditions for human survival and the lifeline of economic development. The reality shows that due to the global shortage of water resources and th...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[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]
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]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
NXP MCU
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