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Thanks for the useful reply!
One more question, should I connect to a pullup- resistor (If yes, how can I calculate resistor value?) or just directly connect is okay?
Hi everyone,
I am using this limit switch (LS): D-F9N (NPN - sink) output. I used an oscilloscope to monitor its output. The observed output is under two cases as follows:
1. Zero volt DC if the LED of the LS on.
2. A noising signal around zero if the LED off.
Is it a normal working condition...
For example, this board require 5V for the input. It means that I need to setup a 5V adapter also. Therefore, it is quite verbose.
I want to find a board that it supports an built-in adapter to 5V or 12V (dependently). So that my solution is simpler.
Usually, an relay require a AC-DC adapter for its operation. It is quite verbose.
Therefore, I am looking for a 220VAC Relay which built-in 220AC to DC.
Could you please suggest me several compatible modules?
Thanks a lot!
Dear KlausST,
Yes, it is TTL, I can view help text and descriptions from MCU via terminal screen, but I can not receive it on the GUI, so I have set a right baudrate also wiring. It just lack of some characters such as \r or \n.
Hi everyone,
I am facing with a problem about changing DB9 port to USB port to adapt to new computer generation.
I download an application that has a Graphic user interface was written on Windows XP, use DB9 port connect to a board has a MAX232 IC to convert signal from RS232 to UART to...
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