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General => Technical support => Topic started by: garysdickinson on June 10, 2025, 09:32:36 AM

Title: Analog ground point for Nano-10
Post by: garysdickinson on June 10, 2025, 09:32:36 AM

I am working with a Nano-10 to work with 4-20 mA sensors.

The Nano-10 does not appear to have an analog ground connection.  The best that I can do is connect the free end of the current sense resistor to my common DC bus.

I am concerned about minimizing noise pickup by the ADC circuitry.

Is there a spot on the Nano-10 that I could solder onto as an analog ground?

Gary Dickinson

Title: Re: Analog ground point for Nano-10
Post by: support on June 10, 2025, 10:00:47 AM

Nano-10 does not have a separate analog ground. So yes you can connect the ground to the power supply 0V as the common ground. Ground noise has not been a problem for the typical applications that Nano-10 have been being used in the past. We do recommend connecting any additional 0.1uF capacitor across the analog input terminal to minimize fluctuation in the readings or do a software average of multiple readings.