RMS Voltage Sensor Part 1: Design

We build an RMS voltage sensor using a ZMPT101B and an Arduino to measure and chart the voltage of your wall outlet. We explain what RMS is, what typical ranges of wall outlet voltage, and solve some challenges in configuring and calibrating the voltage sensor. We also show how to stream the resulting data into Excel Data Streamer, and record a long duration CSV file for analysis and plotting.

[@sevaszek]

I came looking for copper and I found gold.

[@freddecker5287]

I'm the first commenter! What do I win? First, thank you for the effort! And you created a multi-part series. So first... Thank you! I'm wondering if a bridge rectifier and voltage regulator may be an alternative, especially for lower voltages. A transformer provide isolation, but if you get the voltage down, an optoisolator is cheaper. Thanks again and great job. I realize the effort it took to make this contribution to the community.

[@EETechStuff]

What do you win? Well, you win access to the 300+ free videos I've produced on this channel over the last 6+ years, for which I get no income, no views, and no comments. What I do get is people acting like they're entitled to the consulting services of a guy who's been an Electrical Engineer for over 45 years. So if you really like the content you can help out by letting others know that we're here, so maybe I can earn enough this month to buy a cup of coffee.

[@freddecker5287]

@@EETechStuff I couldn't quite tell from your tone, but I hope you knew from mine that I was joking with you since I was the first commenter. I thought I put the winky face emoticon there. I'm not sure if you thought I was asking for help since you commented about free consulting, but I was not. It was wondering out loud since I often have interesting conversations with people like, "I thought about that, but..." or "If you try it, post back here". We are close to the same age since I studied EE in High School and College around the time you mentioned. I repaired electronics from the age of 10 with my uncle, who owned an electronics store. I could crawl around in car trunks to install car stereos too. ;) I do know some people who make a decent amount of money with Patreon and the like, but they have content that is specific to a hobby or something people follow enough to want to spend money like they would with a magazine subscription. Anyway, thank you again.