VK1621 about ikea-vindstyrka HOT 9 OPEN

I've just put a ESP32 inside (running esphome with bluetooth proxy) connected to the test pads next to the connector of the sensor and get the reading direct from the SEN54 sensor (all readings not just PM2,5 Hum and temp) display still works as well :)

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@johanneswilkens thanks a lot! I will add it as soon as I get back to my laptop.

@Maart3nL wow, that sounds great! Would be nice if you could share the parser code (with PR or just the code snippet here)

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I used the default from the sen54 sensor from esphome
https://esphome.io/components/sensor/sen5x.html

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Ah, ok, thanks. Should have googled the library for this before 😁
There’s an official library from Sensirion https://github.com/Sensirion/arduino-i2c-sen5x

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Very cool, @oleksiikutuzov. Do you have a pinout anywhere showing how you connected the esp32?

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Does anyone have a guide for this?

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I've just put a ESP32 inside (running esphome with bluetooth proxy) connected to the test pads next to the connector of the sensor and get the reading direct from the SEN54 sensor (all readings not just PM2,5 Hum and temp) display still works as well :)

Hello, would you be able to put together a guide for doing this? I know nothing about ESP yet, but exposing the PM10 would be a big deal for me. Ideally on zigbee not bluetooth.

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Shame it doesn't ventilate the inside.. could have added mh-z19 co2 to the esp32 aswell...

Used an 8266... Wemos D1 Mini

D1 (GPIO5) SCL
D2 (GPIO4) SCA

Just connect to the testpads by the lcd ribbon (disconnect it and move it out of the way.. you can read the testpad labels and theres no risk when soldering).

Welp: HAving an esp in there messes with the temp measurement

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Instead of Winsen MH-Z19 I would choose Sensirion SCD4x family (photo-acustic sensor instead of NDIR). Smaller footprint and I2C.

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