[align=left]Before, I used the IO port to simulate SPI to drive the OLED. After all, the speed of the IO port is slower than SPI, and there will be obvious delays when refreshing. It is much better to...
[i=s]This post was last edited by strong161 on 2019-11-25 13:33[/i]Seeing that everyone is busy and I haven't posted for a long time, I will also post a10th anniversary post. This board has historical...
China's 3G is quiet, WiMAX is the focus 2006-7-11With the rapid development of communication technology, wireless replacing wired has become an inevitable trend, and 3G and WiMAX have become hot topic...
This is a typical KRC low-pass filter on TI's official website. In order to obtain a higher attenuation gain at the cutoff frequency, this design connects two KRC low-pass filters in series to form a ...
I am in urgent need of a 4- op amp compatible with LM324 , requiring low temperature drift, low power consumption, single power supply, low price (less than 10 yuan / piece), and easy procurement. We ...
We should know that there is a switching power supply that is realized by PWM wave, but do you know that negative voltage can also be output through PWM wave?Negative voltage generation circuit diagra...
There are three uses for inductors: choke, filter, and oscillation. 1. Choke: It is used in low-frequency circuits to prevent low-frequency AC current from flowing to pure DC circuits. It is ofte...[Details]
The Volkswagen ID.3, launched in 2019, is one of the best-selling electric vehicles in Europe and has opened an interesting chapter in the electric vehicle market. The ID.3 is the first pure electric...[Details]
Since the advent of the Hall Effect sensor, it has captured the imagination of designers, and solid-state devices are generally considered to be more reliable than mechanical and electronic devices. H...[Details]
According to Dutch technology media Galaxy Club, Samsung is about to launch an extended reality (XR) head-mounted display device that can display virtual reality (VR) and augmented reality (AR) conte...[Details]
The running light is at port P0, the digital tube position is at port P1, and the segment is at port P2. The numbers jump automatically every second, and the running light has different flashing ...[Details]
In LED lighting applications, the LED driver circuit powered by AC-DC power supply is commonly found in isolation topology and non-isolation topology. These two topologies have their own characteristi...[Details]
On December 2, SERES officially launched its new high-end brand AITO and the first mid-size SUV equipped with Huawei’s HarmonyOS smart cockpit. AITO is a brand jointly created by Huawei and Celes, ...[Details]
1. Writing optimization We have written the following TH0=0XB8; TL0=0X00; or TH0=0X4C; TL0=0X00; If the code is not commented, we have no idea how long the timing is, so in order to increase the r...[Details]
The electronicization of automobiles is progressing rapidly, and we have entered an era where advanced functions are realized using electronic technology. At the same time, it is becoming increasin...[Details]
Clamp meter and digital multimeter are both essential "equipment" for welders. These two instruments have different focuses in their functions. Clamp meter focuses on measuring high current and digit...[Details]
I am new to arm, so I wrote a few small practice programs, recorded here. Includes: running water lamp, single button, pwm driven buzzer, serial port and PC communication Development board s3c241...[Details]
Hello everyone, the day before yesterday I shared with you the WIZnet user manual on how to use W7100A to implement HTTP client (Part 1), today I will continue to share with you the second part. How ...[Details]
Gartner predicts that global public cloud end-user spending will grow 23% in 2021 China grew by 62.1% Gartner, the world's leading information technology research and consulting company, releas...[Details]
Influence of measured fluid characteristics: Due to the nature of natural gas itself, it will undergo complex changes with the change of external ambient temperature, thus affecting the measurement ac...[Details]
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