/Xiaomi_air_purifier_modchip

Open source Xiaomi air purifier modchip

GNU Affero General Public License v3.0AGPL-3.0

I sell on Tindie

Compatibility list:

Xiaomi Air Purifier: Compatible: Tested Tested By
1
2S ✔️ ✔️ TheFlamingo
2H -
2C -
3H ✔️ ✔️ tuxuser & The Flamingo
3C
PRO ✔️ ✔️ The Flamingo
PRO H ✔️ ✔️ The Flamingo
MAX -
F1 -

❔= Untested , If you are able to verify or test , Send me an email.

✔️= Works/tested

❌= Does not work or is untested

Schematic:

Xiaomi Modchip schematic

Downloadable PDF:

Xiaomi-Modchip-Schematic

B.O.M.

This is quite a simple schematic, the hardest part was finding exactly what connector they used. I waned it to be plug and play so it needed to be exactly the same one.

Overview of used parts

Private-MODCHIP.

Gerber Files:

Xiaomi Modchip

Gerber Files:

Xiaomi-Modchip

For security reasons .zip was renamed to .ip. If you want to open these files rename the filename to Xiaomi-Modchip.zip

After uploading the files to for example: https://jlcpcb.com

JLCPCB Xiaomi Modchip upload

You can see that for around 11 Euro you can have 5 Modchips.
There is no need to have a black pcb (This just looks nice, I like my PCBA’s to look nice) Also the original PCB is 1mm thick, there is no need to match that (Xiaomi does that for their antenna impedance, We don’t have an antenna anymore)

Software Binaries

Xiaomi_MOD_V1.0

Xiaomi_MOD_PRO

Xiaomi_MOD_V1.0: Is a binary for the modchip. (how to upload tutorial will follow later) Supports : Xiaomi air purifier 3H and 3C

Xiaomi_MOD_PRO: Is a binary for the modchip. (how to upload tutorial will follow later) Supports : Xiaomi air purifier PRO

WARNING: these .ELF files are for the MODCHIP don’t upload them to the air purifier itself.

PS. If you make or use these files it would appreciate it if you leave a comment.