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!
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!
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?
Easier way to replenish your filters : Click The following will be released: Schematic B.O.M (Bill Of Materials) Geber Files Software binaries (see below) I will write the following tutorials: How to flash your Modchip How to order your Modchip see below Explanation of how the software works. Schematic: Downloadable PDF: B.O.M. This is quite… Continue reading Xiaomi Modchip open source!
Update: Easier way that does not void warranty!: Click After a couple of nights tinkering ,PCBA designing , software writing and a couple of PCBA revisions later success: (see GIF , above) Why: Using these air purifiers is a wasteful and expensive experience. There are no third party filters on the market , and no… Continue reading Xiaomi Air Purifier 3H/C/PRO MODCHIP is here!
Yesterday, I received a mail! By a user named : tuxuser. I thought I was alone in the world of Xiaomi Air purifier poking… Since more people are getting involved I decided to update some more information on the web! I dumped the ESP Flash contents using : Link (look closely and you will see… Continue reading Xiaomi Air Purifier 3H Reverse Engineering Part 3: ESP32 DUMP