How to Install ESPhome and use Open Duco (mini/Pro)

1. Download and install python Download link: https://www.python.org/downloads/windows/Now Download the latest version Windows installer (I used 3.9.9 64-bit. Click the Add Python xx to PATH.. this will save you time when you need to execute a python command.then press install now. (wait until the installer is finished) Then click: 2. Install ESPhome Open the start… Continue reading How to Install ESPhome and use Open Duco (mini/Pro)

How to: Update/Upload firmware in the Xiaomi Modchip.

Tools: You need the following: STM32CubeProgrammer : Click Programmer: ST-link v2 or V3 ,Super cheap option: Click Hex/ELF files: Click (Pro for for air purifier PRO, V1.0 For the 3H/2S) Xiaomi Modchip Step 1 Open STM32CubeProgrammer: Press open file (Next to device memory) And navigate/load to the correct HEX/ELF file. Step 2: Connect Connect/Solder/Use pogo-pins… Continue reading How to: Update/Upload firmware in the Xiaomi Modchip.

Xiaomi 001 PPM FIX, Update!

I was planning to release this way earlier than October, but work and private life got in the way 🙁 Small introduction into the problem: Two distinct signs: Slow to respond to particle changes. Display only shows 001 Cause: The sensor used in the Xiaomi Air Purifiers is the: PMS9003M by Plantpower Datasheet:PMS9003M This sensor… Continue reading Xiaomi 001 PPM FIX, Update!

Opensource DUCO Co2 and temperature sensor. (known as Duco CO2 sensor 0000-4216)

The following is released: Schematic B.O.M (Bill Of Materials) Gerber Files 3D files of the Housing Schematic: Download Schematic: B.O.M: Gerber Files: Change file name to: 00000-4216-Co2-Sensor.Gerber.V2.1.zip (add Z to zip) Step File of PCBA Housing Files: When 3D printing add support to the TOP side underneath the clips. More info on Github:

Xiaomi Air Purifier 001 PPM FIX!

NEW UPDATED ARTICLE: CLICK Below is an old method, THIS WILL VOID YOUR WARRANTY.In the updated article is a method that won’t void any warranties I received an email from Pekka (Thanks!) who found out about this problem in a video/comment. Two distinct signs: Slow to respond to particle changes. Display only shows 001 Cause:… Continue reading Xiaomi Air Purifier 001 PPM FIX!

Opensource Duco Vochtsensor (Moisture Sensor) (0000-4218)

The following is released: Schematic B.O.M (Bill Of Materials) Gerber Files 3D files of the Housing Schematic: Download Schematic: B.O.M: Gerber Files: Change file name to: 0000-4218-vochtsensor-humidity-sensor-SHT-20.GERBEer_V2 .zip (add Z to zip) Step File of the PCBA: Housing: When 3D printing add support to the TOP side underneath the clips.

Xiaomi Air purifier 3H/C/PRO NFC MOD, How does it work?

After opensourcing the mod chip I wanted to give some insights on how the mod-chip itself works. open source info: click As can be seen in the image above, the system consist out of several sub systems.The two most important sub-systems are: NFC Filter Stm32F412RET6 There are two ways to bypass the NFC filters, Make… Continue reading Xiaomi Air purifier 3H/C/PRO NFC MOD, How does it work?