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Why does Arduino not read data from RS232 port?
When I connect the air quality monitor to my Arduino through a Cutedigi RS232 shield, it never reads any data. It seems like the data never goes into the serial buffer, since my code never passes the Serial.available () >0 if statement. Any ideas why this would be the case?
How to read serial data from USB device using Arduino?
You can use the pH built-in RS232 and Arduino, but you will need to reverse-engineer the data format/control protocol, and write your own software (maybe just a terminal script) to do the job. Not the answer you’re looking for? Browse other questions tagged arduino usb uart serial ph or ask your own question.
How can I get data from my Arduino?
You can use WiFi to connect to your Lab network, and collect the data even from your home. You can use the pH built-in RS232 and Arduino, but you will need to reverse-engineer the data format/control protocol, and write your own software (maybe just a terminal script) to do the job.
Can a RS232 shield read from a serial port?
I verified that the RS232 shield is working by loading the following example code from the Serial.Read () reference page:
Can a Arduino communicate with an air quality monitor?
With the arduino powered by an external battery pack, I was able to communicate reliably with the arduino through the RS232 port. However, when my air quality monitor is plugged in, there is no output to the terminal. (of course I powered the arduino through the USB so that I could monitor it)
How does serial communication work on an Arduino?
The Arduino serial libraries insulate you from most of the hardware complexity, but it is helpful for you to understand the basics, especially if you need to troubleshoot any difficulties with serial communications in your projects. Serial hardware sends and receives data as electrical pulses that represent sequential bits.
What kind of serial port do I need for Arduino?
Some serial devices use the RS-232 standard for serial connection. These usually have a nine-pin connector, and an adapter is required to use them with the Arduino. RS-232 is an old and venerated communications protocol that uses voltage levels not compatible with Arduino digital pins.