What is best way to get realtime data from cr1000 to online/public web, like google spreadsheet or something where you can create graphs and share data ?
How fast do you need to update your data and what is the size of your audience? Have you taken a look at Campbell Scientifics data services, Konect GDS? You can find out more and trial an account at www.konectgds.com. Konect can collect, archive and present data.
Here are a few videos to familiarize yourself with Konect.
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is it possible to use https POST and GET commands with RTMC Pro
so that i can post data to google spreadsheet ?
RTMC Pro does not have a built in HTTP Port and Get. You can trigger command line programs from it. So, make a command line script or program that does the HTTP commands you want, then set up RTMC to run it.
what command sends data from cr1000 to pc via main rs232?
if i want to send like 3 sensor values to pc
DIFF1;DIFF2;DIFF3
Look in CRBasic Help for the SerialOut instruction.
There is an example program which shows what you want to do, click on "Example".