​The homing signal board on my Xiaomi Mi Robot Vacuum-Mop 2 Pro (MJST1SHW) charging dock is damaged, and the vacuum can no longer detect the dock to return for charging. Finding a standalone replacement dock on the second-hand market isn't working out, as sellers are pricing them almost as high as a complete used setup.

​I’m currently trying to build a replacement beacon using an Arduino/ESP32. I set up two IR LEDs for the left and two for the right, modulated at 38kHz. However, the vacuum doesn't respond to the custom beacons at all during its docking routine.

​Does anyone have experience generating these specific homing signals? I would greatly appreciate any insights into the correct IR protocol, pulse timings, or data payloads required to get the vacuum to recognize the dock.