Ten Days with RS-232 - Making My Offline LG TV a Little Smarter
After ten days of experimenting with RS-232 control on my offline LG CX, it didn’t replace infrared or HDMI-CEC–but it found a surprisingly useful place in my smart home.
Aidan Maurin-Jones shares tools, automations, and thoughts on whatever’s interesting this week.
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Aidan Maurin-Jones shares tools, automations, and thoughts on whatever’s interesting this week.
After ten days of experimenting with RS-232 control on my offline LG CX, it didn’t replace infrared or HDMI-CEC–but it found a surprisingly useful place in my smart home.
After days of troubleshooting cables, DB9 pinouts, TX/RX wiring, a MAX3232, LG service menus, and even my own debugging code, I finally got Home Assistant talking to my offline LG CX over RS-232–and became Number 6.
My attempt to become the sixth active installation of Home Assistant’s new LG TV via Serial integration turned into an adventure involving ESPHome, a MAX3232, service menus, DB9 pinouts, a multimeter, and an LG CX that stubbornly refuses to talk back.
Building my first ESPHome external component to make SwitchBot Curtains feel like native ESPHome devices.
Using three clever Shortcuts and the Kasa cloud API, you can log in, list devices, and control TP-Link Kasa smart plugs and switches directly from Shortcuts—no Homebridge required.