Weekly highlights: 2018.5.7-2018.5.13

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Weekly highlights: 2018.5.7-2018.5.13 [Copy link]

Hello, everyone~~Our review of the week is here again~~There are many wonderful stories in the forum in the past week~~Come and have a look~~ Recommended wonderful posts: Diode Talk--From Component Characteristics to Circuit Application Examples

Diode is also one of the five most frequently used components in circuit design (resistors, capacitors, inductors, diodes, transistors). Light-emitting diodes are widely used in indicator lights of various electronic products, light sources for optical fiber communications, indicators of various instruments, and lighting. Many characteristics of light-emitting diodes are unmatched by ordinary light-emitting devices. [/quote]The past and present of resistors - the essence of resistor knowledge @ljj3166 【CH554 type DIY】USBDDS (Part 1) @辛昕 [Xin version of small programming questions] Implement strcpy (total value 300 core coins)

I won't keep you in suspense. This time the programming question is as follows ()strcpy() { } To explain, it means that the return value and formal parameters are also defined by us; At the same time, we implement the function body. [/quote] @ylyfxzsx IWATSU DS-8812 Yanqi Digital LCD Oscilloscope Disassembly Appreciation Classic book on switching power supply, collect it quickly! According to the principle of PWM power amplifier, a fan with stepless speed regulation is initially designed. VS-RK3288 Debugging Notes --- How to distinguish two identical USB UVC Cameras? [quote]Question: When the system is connected to two identical UVC Cameras, due to the same resolution, PID/VID are the same, In addition, the order of system initialization is uncertain, so the HAL layer cannot know the corresponding order of the front and rear cameras. Analysis: Since the cameras are connected to different USB buses, for example, Camera A is connected to USB1 and Camera B is connected to USB2. Then it can be achieved by modifying the corresponding parameters when the UVC initialization in the driver or the upper layer queries the lower layer. The latter is changed here. However, this method can only be added as a patch.

@Bingqi23 My USB learning experience unfolds-the first episode @shipeng Discussion on Power Frequency Sine Synchronous Rectification Scheme @zy459994202 [url=https://bbs.eeworld.com.cn/thread-644138-1-1.TCP Server example

1. >>> import usocket >>> s = usocket.socket(usocket.AF_INET,usocket.SOCK_STREAM) # Create STREAM TCP socket >>> s.bind(('192.168.12.32', 6001)) >>> s.listen(5) >>> s.setblocking(True) >>> sock,addr=s.accept() >>> sock.recv(10) b'rt-threadr' >>> s.close()

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@dcexpert Use micropython to control WS2812 color screen to display Chinese characters and small patterns https://12.eewimg.cn/bbs/data/attachment/forum/201805/08/161520knf15lxltzjtx1nl.png.thumb.jpg https://12.eewimg.cn/bbs/data/attachment/forum/201805/08/161520knf15lxltzjtx1nl.png.thumb.jpg https://12.eewimg.cn/bbs/data/attachment/forum/201805/08/161520knf15lxltzjtx1nl.png.thumb.jpg https://12.eewimg.cn/bbs/data/attachment/forum/201805/08/161520knf15lxltzjtx1nl.png.thumb.jpg #Micropython Great War# The first bullet: Get moving, let's DIY together #Micropython Great War# The second bullet: Publish an original mciropython tutorial to win gifts! #Micropython Great War# The third bullet: Grab the building! Let's organize micropython information together Participate in power knowledge exchanges and win gifts! ! Help others, achieve yourself: EEWORLD Monthly Q&A List (4th issue) Monthly Original Selection May 2018 (Total 4th Issue) EEworld moderators are recruiting new ones! ! Welcome to join our team! ! ! eeworld.com.cn/thread-643464-1-1.html]Help others, achieve yourself: EEWORLD Monthly Q&A List (4th issue)[/url] Monthly Original Selection May 2018 (Total 4th Issue) EEworld moderators are recruiting new ones! ! Welcome to join our team! ! ! eeworld.com.cn/thread-643464-1-1.html]Help others, achieve yourself: EEWORLD Monthly Q&A List (4th issue)[/url] Monthly Original Selection May 2018 (Total 4th Issue) EEworld moderators are recruiting new ones! ! Welcome to join our team! ! !

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