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I just added two PMIC chips as well. They will be bound to a 5V output and a 3.3v output. The idea being that you can power down/power up sensors that shouldn't be on an the time, for example dust sensors

I could also just mirror the screen pins for a couple of options (positioned based on size on the board), but choosing a couple of options. My original choice was dictated by.... Availability since I have a bunch of these. But I have several other displays that I used for testing of my other...

If there's general demand for it :D It does look cool in that color, I have to admit. Manufacturing takes a bit more, but I like it. I am still holding on hitting that purchase button as I keep finding better ways to organize the components and lay down the traces, but the circuit itself...

I also added the tach sensor, which I could not figure out before. Test driving Gemini AI from Google, it found several links and it figured out that reading needs a pull up resistor since the fan will sink to ground on each pulse. This was the last bit to make me happy, so I'll probably order...

CH4 methane sensor I'm going to play with is part of a larger family (MQ4 being methane) and so the choice of sensor is really up to the usage you want to make. I have had some time yesterday to update hte board layout and I added some extra screw terminals for MQxx sensors, I2C sensors, DHT...

Where are you located? In about to hit the order button on the next iteration of the PCB which has a dedicated ch4 sensor (methane... To modulate volume of air based on concentration. Sulphur would have been a better sensor for a bathroom smell sensor, but they are expensive and methane is an...

What amazes me is how much the community (@javawizard's circuit in particular, who introduced me to a nifty member of the esp32 family that I didn't know about) has beaten down the trail to lower the initial effort in all that. I'll try to post some final pictures/videos of the installed case...

I managed to assemble a board early this morning, reflowed in my repurposed toaster oven, which I modified with a custom controller board, screen and firmware (that is another story). Here's the controller in action with an early version of the esphome firmware, which will allow complete...

Indeed. It fits in the fan's control case. The large notch on the upper right corner provides enough room to pass the wires so they can be connected to the screw terminal. I already had a mash up circuit assembled from several different components controlling the fan, but it was quite the mess...

Didn't want to wake up a dead thread, but this sparked some interest for myself as I have one of these fans running in a shower room in the basement. So I took some inspirations from the design but changed so I could embed it in the controler box using a custom 3d printed cover. The device will...