Jeff Horsburgh – EnviroDIY

Jeff Horsburgh replied to the topic Precise analog voltage measurement using Arduino in the forum Other Data Loggers 8 years, 5 months ago

Update!

I switched to a 12-bit ADC that I had laying around from another project (this one). You can supply it with a range of voltage up to about 5.5 V i think, but it has it’s own voltage reference. That cleaned up the noise I was getting, and I’m now getting voltage readings across the resistor in my current loop that put me very close -…[Read more]
Jeff Horsburgh replied to the topic Precise analog voltage measurement using Arduino in the forum Other Data Loggers 8 years, 5 months ago

Thanks for the reply @neilh. The meters are commercial grade (read that as $$$$$), and USU will eventually work them into their building automation (SCADA) system. But, they don’t have it deployed yet in all the buildings and so I need a cheap way to collect high frequency data from the meters and get them on USU’s network until that happens -…[Read more]
Jeff Horsburgh started the topic Precise analog voltage measurement using Arduino in the forum Other Data Loggers 8 years, 5 months ago

I’ve been working on an application using the Arduino UNO Ethernet and the Adafruit Datalogger Shield for creating an Ethernet enabled datalogger for some water meters that I have recently installed in residential buildings on Utah State University’s campus. The output of the meters is a 4-20 mA current loop that requires a supply voltage of 12-24…[Read more]
Jeff Horsburgh became a registered member 8 years, 5 months ago

@horsburgh