Anybody use DMX on Kincony A24's RS485 on EspHome in Home Assistant?

[KRende]

Good day.  Has anybody set up DMX on Kincony A24's RS485 in EspHome in Home Assistant?  I tried installing the Github add-in at https://github.com/andyboeh/esphome-dmx512, but I'm a beginner and haven't gotten it to work so far.  The Kincony's input and outputs work fine, but I don't know how to proceed.  I've put this in the Kincony's Yaml file, and the logger reports the value being sent to DMX_1, but my fixture's DMX indicator doesn't come on, so I don't even know if I wired it correctly.  Anyway, here are the Yaml settings:

uart:
  id: uart_bus
  tx_pin:
    number: 33
    allow_other_uses: true # For ESPHome >= 2023.12.0
  baud_rate: 250000
  stop_bits: 2

dmx512:
  id: dmx
  uart_id: uart_bus
  tx_pin:
    number: 33
    allow_other_uses: true # For ESPHome >= 2023.12.0
  uart_num: 1
  periodic_update: true
  update_interval: 500

output:
  - platform: dmx512
    channel: 1
    universe: dmx
    id: dmx_1

light:
  - platform: monochromatic
    name: "Test Lights"
    output: dmx_7
    id: light_test
    default_transition_length: 2s