LED Brightness on 2477D dimmers?

[biiiink]

Is it possible to adjust the LED brightness on the 2477D dimmer switches?

[geoffdavis]

I don't believe so with this module, but it's probably not too hard to add the support.

Page 26 of the Insteon Command Tables shows the command structure.

Per a feature request I just raised on the Home Assistant forums:

The Insteon Keypads and Switches/Dimmers support turning on and off the LED backlight ( standard commands 0x2008, 0x2009), as well as setting the LED backlight brightness (Extended command 0x2E00 0x0007 0x11-7F).

Indigo’s logs look like this when I send the command to set brightness to 1:

   Sent INSTEON                    "East Bedroom Hall Light" raw insteon command (20 09   00 00 00 00 00 00 00 00 00 00 00 00 00 00; ack: 09)
   Sent INSTEON                    "East Bedroom Hall Light" raw insteon command (2E 00   00 07 06 00 00 00 00 00 00 00 00 00 00 00; ack: 00)

And here are the logs when I send the command to set brightness to 75:

   Sent INSTEON                    "East Bedroom Hall Light" raw insteon command (20 09   00 00 00 00 00 00 00 00 00 00 00 00 00 00; ack: 09)
   Sent INSTEON                    "East Bedroom Hall Light" raw insteon command (2E 00   00 07 60 00 00 00 00 00 00 00 00 00 00 00; ack: 00)

That device, East Bedroom Hall Light, is a Switchlinc Dimmer (2-wire), but the commands to my KeypadLinc Dimmers look identical.

According to the Insteon command tables:

Page 8: The first command 0x2009 is a standard command commanding the device to turn on the back light. 0x2008 turns off the backlight completely, so it makes sense that you’d want it to be on in order for the backlight brightness to have any effect.

Page 26: The second command 0x2E00, an extended command with D1 set to anything and D2 set to 0x07, says set the backlight brightness to the value in the following data octet, D3. According to the doc, D3 must be in the range 0x11 through 0x7F