PWM controlled fan tacho wrong

[jelly32]

Do you have a drawing of this

20200626_203108_cr.jpg (552.87 KiB) Viewed 4930 times

[ShakataGaNai]

Thank you so very much!

[jelly32]

I published a project on GitHub describing an "ESP32 fan controller". An ESP32 is used for controlling a fan via PWM including tacho measurement, MQTT and (Touch-)display. Feel free to comment.

https://github.com/KlausMu/esp32-fan-controller

[mihaidurus]

Hi, I'm working on a smart air exchanger and I have the same problem with the tacho, it would really help me if you could give me a link to the project or something, thank you in advance!!!

[jelly32]

The link to the GitHub project is in the post above. Can't you see it? If not, google for "esp32 fan controller github klausmu".