Jeff Horsburgh – EnviroDIY

Jeff Horsburgh replied to the topic Precise analog voltage measurement using Arduino in the forum Other Data Loggers 10 years 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 10 years 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 10 years 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]

@horsburgh