Use xxter Logic with KNX to dim artnet DMX or Philip HUE

Freek-Jan Buijsman

This is an example on how to use a KNX push button (taster) with DPT3 to control a DMX (or Philips HUE) light.

A KNX push button uses the DPT 3 for dimming. A DMX dimmer always uses an absolute dimming level. To control this, you can use the "virtual dimmer" logic block in xxter. This can adjust a dimming value up or down based on a relative dimming value. We use this, for example, to dim a HUE lamp (which also doesn't support a relative dimmer) with a KNX push button.

Make sure to create the group addresses needed in the components list in the project first. Addresses with I:XXX are internal(dummy) addresses.