DIY IoT Fan

#1

Post by JoshuaMulliken » Sun, Jul 04, 2021, 9:35 PM UTC

Re: DIY IoT Fan

#2

Post by bartvk » Wed, Jul 07, 2021, 7:18 AM UTC

The pinout of that ESP32 board says 3.3V but the author feeds 5V into it. But apparently it works :)

Something else I didn't quite understand: they write "NodeMCU ESP32 which is a small IoT device with a USB port and is programmable in ESPHome". Does that mean that the little board itself does not need to be flashed? That, out of the box, it's controllable/programmable in ESPHome, which is webbased?

Looks like a fun little project, all in all. Kudos for documenting and sharing it!

Re: DIY IoT Fan

#3

Post by maxioatic » Wed, Jul 07, 2021, 7:27 AM UTC

I have this same exact fan! And the remote recently stopped working so I was thinking of doing something really similar to this. Glad to see it worked out.

Re: DIY IoT Fan

#4

Post by MrBuddyCasino » Wed, Jul 07, 2021, 7:42 AM UTC

bartvk wrote: post #2

The pinout of that ESP32 board says 3.3V but the author feeds 5V into it. But apparently it works :) Something else I didn't quite understand: they write "NodeMCU ESP32 which is a small IoT device with a USB port and is programmable in ESPHome". Does that mean that the little board itself does not need to be flashed? That, out of the box, it's controllable/programmable in ESPHome, which is webbased? Looks like a fun…

> The pinout of that ESP32 board says 3.3V but the author feeds 5V into it.

He is using a dev-board with a USB jack and an integrated step-down converter. The ESP32 is not 5V tolerant at all, the pinout diagram is for the pads on the ESP32 module, not the whole board.

Re: DIY IoT Fan

#5

Post by joshu » Wed, Jul 07, 2021, 7:45 AM UTC

esphome seems pretty great, been meaning to give it a try.

Re: DIY IoT Fan

#6

Post by Havoc » Wed, Jul 07, 2021, 7:59 AM UTC

bartvk wrote: post #2

The pinout of that ESP32 board says 3.3V but the author feeds 5V into it. But apparently it works :) Something else I didn't quite understand: they write "NodeMCU ESP32 which is a small IoT device with a USB port and is programmable in ESPHome". Does that mean that the little board itself does not need to be flashed? That, out of the box, it's controllable/programmable in ESPHome, which is webbased? Looks like a fun…

It does still need to be flashed. ESP32 are blank on arrival

Re: DIY IoT Fan

#7

Post by xenio » Wed, Jul 07, 2021, 8:03 AM UTC

I have the same fan, I'll love to control it with esp32. Is he using 3 relays to trigger on/off, rotation and speed? Also, from what I see, he is not detecting the previous state?

Re: DIY IoT Fan

#8

Post by janekm » Wed, Jul 07, 2021, 8:07 AM UTC

I recently came across this neat button pusher IoT gadget (used it to control the boiler in our rented accommodation): https://www.switch-bot.com/products/switchbot-bot

A less intrusive and safer alternative for those not quite comfortable with mains diy.

Re: DIY IoT Fan

#9

Post by Havoc » Wed, Jul 07, 2021, 8:18 AM UTC

For those less keen on mains voltage - some wifi smart plugs can be flash with tasmota without opening them.

Tricky but is you need a fan that powers on when it gets juice. Something that requires a button press won’t work

Re: DIY IoT Fan

#10

Post by baybal2 » Wed, Jul 07, 2021, 8:35 AM UTC

Havoc wrote: post #9

For those less keen on mains voltage - some wifi smart plugs can be flash with tasmota without opening them. Tricky but is you need a fan that powers on when it gets juice. Something that requires a button press won’t work

A neat trick: there is almost always enough AC on the neutral, even when the line is off to run some very low power MCU, or even do some LED blinks.