Yeelight Bluetooth Rotary Dimmer Switch

Intent
To be able to use the dimmer switch with other smart home devices and applications eg. home-assistant

Setup Required

• YLXD02YL - Yeelight Ceiling Light [Yeelight 650]
• YLKG08YL- Yeelight Smart Dimmer Switch [Paste Version]
• Rooted Android Phone with developer options enabled
  • Bluetooh HCI snoop log enabled
• BLE Scanner App
• nrf Connect App

Hardware

• Rotary Encoder
• BLE Chip Telink Semi TLSR8267

Protocol Reverse Engineering Open Issue

• Issue #1

Software Tools

• btlejack [referrer @nikko82]

References

• https://github.com/MiEcosystem
  [referrer @saeugetier]
  Amazing repo by @0xabadc0fe 谢谢 detailing mijia iot protocol - ble, wifi
  • https://github.com/MiEcosystem/miio_open
  • https://github.com/MiEcosystem/mijia_ble
• https://github.com/leopck/Yee-Light-Blue
• https://github.com/rytilahti/python-yeelightbt
• https://github.com/Marcocanc/mi-lamp-re
• https://medium.com/machine-learning-world/how-i-hacked-xiaomi-miband-2-to-control-it-from-linux-a5bd2f36d3ad
• http://nilhcem.com/iot/reverse-engineering-simple-bluetooth-devices
• https://blog.attify.com/the-practical-guide-to-hacking-bluetooth-low-energy/
• https://github.com/oliexdev/openScale/wiki/How-to-reverse-engineer-a-Bluetooth-4.x-scale

Other Solution

• ESP32 based new pcb which can fit in the same plastic housing
  • Deep Sleep
  • LiPo battery
  • HTTP programmable actions