Design a Handheld Electric Field Meter with Arduino

[Jp43]

Hello, I want to create a handheld electric field meter to measure the strength at a certain point with an arduino. I have seen various ideas online but I am still not sure what kind of design to use.

Is the right concept to use two antennas. Measure the voltage on each and then calculate the difference to get so many v/m? If so do I have to run a small current through the plates at a certain voltage? I am just not quite sure where to go with this.
I would like to be able to get a relatively accurate readout onto my arduino. Does the design I chose affect this or are they all the same? I really appreciate any guidance with this.

I did find a design online (using the op amp) which I tried out. I supplied it with the 5v but I got 2.7 out and had no idea whether I was actually measuring electric field or something else.

Thanks, John

 

[jim hardy]

Sounds like a candidate for our DIY forum

See if a search on "E Field Mill" turns up what you're after.

Here's a 'how to ' https://www.instructables.com/id/Adruino-Based-Electrostatic-Field-Mill/

 

[AlexTheParticle]

Hello John,

Creating a handheld electric field meter using an Arduino is definitely possible and there are many different designs and ideas out there. It's great that you are doing your research and trying out different designs.

In terms of using two antennas and measuring the voltage on each to calculate the difference, that is a common method used in electric field meters. However, you do not need to run a small current through the plates at a certain voltage. The voltage difference between the two antennas is enough to calculate the electric field strength.

The design you choose can affect the accuracy and readout on your Arduino. Some designs may be more sensitive or have better noise filtering capabilities, so it's important to choose one that fits your needs. I would suggest looking for designs that have been tested and have good reviews from other users.

Regarding the design you found online using an op amp, it's possible that you may have not connected it correctly or there may be other factors affecting your measurement. It's always a good idea to double check your connections and make sure everything is set up correctly.

I hope this helps guide you in the right direction. Best of luck with your project!