ESP32Dali

ESP32Dali is an ESP32-based, ESPHome-friendly interface to DALI lighting devices. It acts as a master on the DALI bus through an isolated front-end, and can also provide 18 V DALI supply voltage from 5 V input.

The board is a matchbox-sized 2-layer PCB that hosts an ESP32-WROOM-32 plus the DALI interface.

• Schematic & PCB: hw/ (KiCanvas, PDF)
• 3D STEP and printable enclosure: 3d/
• ESPHome external components: components/

Example ESPHome configuration

The dali component can be pulled in as an external component, so the same configuration works on the ESP32Dali board and on any other ESP32 with a compatible DALI front-end.

esphome:
  name: livingroom
  friendly_name: Livingroom

esp32:
  board: esp32dev
  framework:
    type: arduino

external_components:
  - source:
      type: git
      url: https://github.com/petrinm/ESP32Dali.git
    components: [ dali ]

dali:
  id: dali_if
  tx_pin:
    number: 17
    inverted: true
  rx_pin:
    number: 16
    inverted: true

light:
  # Dim-only gear on one short address:
  - platform: dali
    name: "LED strip"
    interface: dali_if
    address: 5
    default_transition_length: 1s   # converted to DALI fade time on the gear

# Dual DAPC CT (two DAPC channels, two short addresses):
# - platform: dali
#   name: "TW panel"
#   interface: dali_if
#   cold_white_address: 0
#   warm_white_address: 1
#   cold_white_color_temperature: 6536 K
#   warm_white_color_temperature: 2000 K

# DT8 CT on one address (DAPC + DT8 colour temperature command):
# - platform: dali
#   name: "DT8 lamp"
#   interface: dali_if
#   address: 5
#   cold_white_color_temperature: 6536 K
#   warm_white_color_temperature: 2000 K

# DT8 RGB on one address (SET TEMPORARY RGB DIM LEVEL + ACTIVATE):
# - platform: dali
#   name: "RGB strip"
#   interface: dali_if
#   address: 3
#   dt8_rgb: true

# Long sunrise (up to ~16 min uses DALI extended fade time on supported gear):
# - platform: dali
#   name: "Slow dim"
#   interface: dali_if
#   address: 5
#   default_transition_length: 15min

Build and flash with:

$ esphome run livingroom.yaml

License

Released under the MIT License.