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I'm doing this a little differently. I know I can forget things, like turning fans on and off. But I also know I can dive in and set up an automation and forget about how I did it or what it needs. So I try to get things set up to allow for that. In this case, in ESPHome, you can make a copy of...

It's a trade-off. Doing it with hardware adds an expense. I thought about doing it with software, but I was thinking in terms of safety. At some point, I'll be needing a part-time employee to help me with handling CNC work and keeping the 3D printers going from one project to the next. I figure...

I needed a footprint for something and it wasn't in the library. I started Googling and found a lot of things about, "DO NOT ASK US TO DESIGN FOOTPRINTS!" and realized that a lot of people must have expected to get footprints designed. I looked up info on that and found it was really easy to do...

Oh, so you're like me! (I'm basically answering and responding because not many others are - I wonder if I say something stupid, would someone jump in and correct me? ;) When I started reading this thread, I had never used any software for circuit design or PCB design. People were posting...

Just note I was not saying that as an expert, more as someone who has read a lot of posts here and there are a few threads about it on Arduino forums. Basically, PWM is a way of setting voltage. I didn't dig into the details on how it's done. As for scopes, as I mentioned, I have a cheap one, I...

I can't help you with any model specific info, but I think you already know that. Note: I had a lot more info in the rest of this post, but my system crashed when I was doing something else and I clicked the button on Chrome to restore all sessions, and it didn't restore AND, of course, my post...

Speaking as someone who is FAR from an expert in this, I would have to agree with you. Ballpark can be important, though. From what I've heard, and I'm not sure all the sources on this really knew what they were talking about, apparently these fans cannot handle 40Khz. 10Khz and 14Khz...

Yeah, so am I. And I spent time learning ESPHome, then openHASP, and Tasmota. Plus I learned a lot of electronics while working this out. I know more than some, but not as much as many people who have posted here before. As long as the fan is PWM, then the main purpose of the o-scope is to find...

Love the Austin Powers reference! Yes, it's a rabbit hole, or a lot like choosing the red pill when Morpheus offers them to you! In my case, I'm working on starting a side business based on gizmos like this and others that use microcontrollers. Also, as of now, there's really nothing on the...

Sorry. I would say, since you've asked that once and bumped it twice, you're not going to get an answer here. I see that's also by AC Infinity. The bad news is that they are totally unaccommodating if you call for information. It's clear they do not want their systems to interact with other...

Thank you! I spent years as a teacher, first in elementary school, then in residential treatment. You have a good point, but the teaching habits, especially the ones I learned and developed in residential, die hard. Students in that kind of setting are constantly expecting people to do things...

The PCB is one of the LAST things you would be doing. I'm getting the impression what you're looking for is more like a kit or someone telling you, "Do this and that and here's a PCB layout you can send in to someplace and they'll make you one, then just buy this list of items and solder them in...

The fan is not controlled by the output level, but by the frequency. It's PWM. I used a cheap $40 oscilloscope on Amazon to verify my signal. The ESPHome code (and it's for the project ESPHome, so you'll have to learn some basics about compiling and uploading a configuration to the ESP32 under...

I'm about to go to sleep and it's late, so I can't get too in depth, but don't focus on the USB aspect. While it has a USB-C connector, it uses a +10V power line. While the IO lines do match the specs for USB-C, you have to allow for the +10V instead of +5V, so you're going to have to use either...

Just how simple do you want it? I know this is a long thread, but all you need is in here. If you want just a "black box" that will do it, that's quite a bit for someone else to do. If, by "walk me through" do you mean basically giving you a PCB design and telling you what components you need...

I used 1 Khz. I ran into issues because I also wanted to see if i could get this to work on another ESP32 system. It was either Tasmota or OpenHASP. I ran into multiple issues with that. First, my oscilloscope couldn't handle the 10Khz that I think they were using and, as you point out, there's...

Found it! So it was a transistor - I can't remember the specs, but it's fast enough. I bought all the parts from Amazon. The ESP32 is a WROOM, so be aware that the pin numbers might change depending on which version of the ESP32 you use.

What I do remember is that the fan provides +10VDC through the USB-C connector. That's helpful here, but bad otherwise. For a USB-C connector, most hardware will expect +5VDC, and NOT 10, so when they do this, that could break a person's hardware. Here's what I remember about what I did: I...

I did get it working - basically I used the info from here and got a schematic together. I don't have my notes here - I'm at the workshop and they're on my the computer in the house. I don't have a PCB or anything, I just have it running on a breadboard using the ESPHome config given.

I had to set this aside to get some other work done, and now I'm finally able to get back to it. I want to be sure I'm doing things right before I hook my ESP32 up to the fans. I bought a low end o-scope and used it to verify the square wave signal from the ESP32. So, for immediate questions, I...