chengjulian
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  • shenzhenshi
  • China, mainland
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chengjulian's Discussions

How to implement Modbus RTU programming under Windows system t3.5 delay

Started on Tuesday 0 Replies

According to the Modbus RTU protocol requirements, the communication message frame is separated by a blank time of more than 3.5 characters. This is easier to do in a single-chip microcomputer. It is…Continue

DIY simple obstacle avoidance car

Started Apr 7 0 Replies

Last month, my colleagues made a simple obstacle avoidance car. This colleague's ability in DIY is super cattle. After seeing this car, I feel so talented and must share it with you. With the consent…Continue

Have you ever developed the Tuowei micro-machine interface screen?

Started Mar 7 0 Replies

0 Have you ever developed the Tuowei micro-machine interface screen? / or similar screen recommendation, recently on the part of the project screen?Continue

Tags: screen, interface, machine, Human

 

chengjulian's Page

Latest Activity

chengjulian posted a discussion

How to implement Modbus RTU programming under Windows system t3.5 delay

According to the Modbus RTU protocol requirements, the communication message frame is separated by a blank time of more than 3.5 characters. This is easier to do in a single-chip microcomputer. It is difficult under the Windows system. For example, the resolution of the VB6.0 timing interval. It is 1/18 second, and the t3.5=4mS timer at 9600 rate cannot be used for timing at high speed communication. Even with the mS level system clock timeGetTime, it is impossible to achieve 0.33mS of t3.5 at…See More
Tuesday
chengjulian posted a discussion

DIY simple obstacle avoidance car

Last month, my colleagues made a simple obstacle avoidance car. This colleague's ability in DIY is super cattle. After seeing this car, I feel so talented and must share it with you. With the consent of the colleague, the circuit schematic and source code of the car are shared here. This simple obstacle avoidance car uses ultrasonic waves for distance measurement and determines the direction of travel of the car based on the measured distance. Simplify the handling of obstacle avoidance and…See More
Apr 7
chengjulian replied to jerry zhang's discussion Agricultural drone sprayer and sprayer, which one do you choose?
"This should be based on different geographical locations, climatic conditions, and different crops to choose the right sprayer and agricultural drone sprayer."
Mar 25
chengjulian replied to Richard Gardner's discussion Current and Voltage Sensor
"In many cases of scientific experiments and industrial applications, current and voltage measurements and control are required, especially in cases where high current and high voltage measurements and control are required and high accuracy is…"
Mar 18
chengjulian replied to James Hall's discussion Design and make your own PCB
"It's difficult for me to design a PCB of my own, but I will try to draw a wiring and find a PCB manufacturer to do it for me. http://www.pcbindex.com"
Mar 11
chengjulian posted a discussion

Have you ever developed the Tuowei micro-machine interface screen?

0 Have you ever developed the Tuowei micro-machine interface screen? / or similar screen recommendation, recently on the part of the project screen?See More
Mar 7

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Please tell us a bit about your UAV interest
I am mainly interested in the flight of drones.
Hometown:
china

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Season Two of the Trust Time Trial (T3) Contest 
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