WM918 Weather Station

it depends on distance and match of terminal.

pls check out the termianl and protocol and their seting up. I thnk

I have quite a lot of experience with many brands of weather stations but I do not recognize the Huger brand.

Most stations, in order to be compatible with third party software, used in the US MADIS system transmit the data in the APRS format to simplify the terminal. You may have some handshaking codes between the terminal and the weather station that you cannot see. Is the Huger made outside the US ?

They may be using a grey code. If a computer programed as a dumb terminal cannot read it with 9600 8N1 code, they may have there own proprietary code.

Will the manufacturer give you any help. How is your present system displaying the data.

Thanks, the other name for this station is Oregon Scientific. I don't want to display the data on a terminal was just trying to get the protocol. Would like to decode it with PIC uController and then just pick out wind and temp to transmit this to another location. The data stream doesn't make any sense to me!

Some inexpensive weather stations use their own protocols readable only by their own displays.

I had a flow meter designed to drive a serial printer. The device did not come with data protocol and I wanted to capture the data for spreadsheet manipulation and where can you get a serial printer anymore?. I had a little difficulty getting a 9 pin RS232 connecter as most stores just sold extenders (the data cable needed its send/receive cables switched). I used Windows Hyperterminal and just kept trying different arrangements (parity, byte length, etc.) until it went from what looked like jibberish, to unformated numbers, to columns of recognizable data.

That's the way to go. I've sorted a few serial devices out by the exact method you describe. I believe it's also possible to do it with a CRO but I've not tried that.