Summary

  • Blogger Florin decided to purchase a cheap Serioux LD600LI uninterruptible power supply (UPS) to protect his smart home equipment but ran into several issues with the USB interface.
  • The communication between Home Assistant and the UPS worked initially, but the connection was often lost, which created problems with integrating the UPS into a smart home setup.
  • After investigating the issue, Florin found that the problem related to a generic USB-serial adapter that was equipped with an outdated firmware version and was not powerful enough to deal with the load.
  • He decided to replace the adapter with a Silabs CP2102N USB-to-UART controller to create a virtual serial port, together with a HopeRF CMT8120 dual-channel digital isolator to ensure full isolation of the conversion boards.
  • The new setup worked well, except for one Sonoff Zigbee controller in the smart home setup, which used the same Silabs controller, so Florin had to use an alternate PID to fix the issue.

By Maya Posch

Original Article