Is there any procedure for it? So it need to send 56 bit to describe the sate of every one. This site uses cookies. January 7, at The way those cheap multimeter usually work is by sending the state of every segment of the LCD. Posted on April 19, by alexkaltsas.

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Python script to read data from VA18b multimeter. | My humble Blog.

Email required Address never made public. The way those cheap multimeter usually work is by sending the state of every segment of the LCD.

This DMM uses the low nibble of 14 bytes to send the lcd segments.

The one I was able to obtain quickly was the VA18b. March 30, at I also changed the baud rate in the va81b but nothing helped. March 3, at March 1, at 8: Posted on April 19, by alexkaltsas. There is no other serial comm application running apart from the multi meter.


The serial port setting is baud, 8 bits, Stop 1, Parity none. Can you test various baud rates? We are looking for the programming of Steren Mul multimeter.

Auto/Manual Ranging Digital Multimeter With USB Interface 6000 Counts VA18B

I mean with any other serial communication application. Leave a Reply Cancel reply Enter your comment here The nice thing is that the communication protocol is known.

I checked the multimeter with other programs and found that the issue is that I am not able to switch to PC link mode.

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If you open any other terminal application, can you see any data? I tested the script again and it ba18b just fine for me. I am trying your code. December 10, at 8: March 29, at 7: You are commenting using your Twitter account.

March 3, at 9: Ba18b a slightly different DMM with different baud rate? Hexadecimal 6 Data frame length: January 14, at 6: March 1, at What is the port created when you connect the usb adapter?


VA18B – Digital multimeter, USB (V&A VA18B)

Fill in your details below or click an icon to log in: May 23, at 9: I will describe the part for the multimeter. To find out more, including how to control cookies, see here: By continuing to use this website, you agree to their use. I am getting different values at different time.