How to dim a Hue lampe from KNX

[Tommi_Jensen]

Hi

I've have some Philip Hue lamp, connect to KNX via Homelynk.

I've want to dim them from a KNX push button (4 bit object)
Is there someone there has made a solution how to dim ?

Switch on/off and 0 - 100% is show in AN020 but not 4 bit object

BR

Tommi Jensen

[Anonymous user]

I'm not sure how fast we can send information to hue lamps via homeLYnk, but below you'll find a simple script which converts dimming object to value object (Resident script with interval 0s):

obiekt_in_4b = grp.getvalue('6/0/1')

obiekt_out_1B = '6/0/2'

skok = bit.band(obiekt_in_4b, 0x07)

if skok ~= 0 then

  brighter = bit.band(obiekt_in_4b, 0x08) ~= 0

  aktualna = grp.getvalue(obiekt_out_1B)

  if brighter then   nastepna = aktualna + 5

  else nastepna = aktualna - 5

  end

  nastepna = math.min(nastepna, 100)

  nastepna = math.max(nastepna, 0)

  if aktualna ~= nastepna then

    grp.write(obiekt_out_1B, nastepna)

  end

end

os.sleep(0.25)

[Tommi_Jensen · Accepted solution]

Hi Pawel

Thanks for the answer, there was a small bug in the script, but it working just fine now, see below

Br.

Tommi

--oprettes som permanent script med 0s

objekt_in_4b = grp.getvalue('1/0/4')
objekt_out_1B = '1/0/6'

skok = bit.band(objekt_in_4b, 0x07)
if skok ~= 0 then
 
  brighter = bit.band(objekt_in_4b, 0x08) ~= 0
  aktualna = grp.getvalue(objekt_out_1B)   ------ This was corrected from grp.getaktualna to grp.getvalue

 
  if brighter then  nastepna = aktualna + 5
  else nastepna = aktualna - 5
  end
 
  nastepna = math.min(nastepna, 100)
  nastepna = math.max(nastepna, 0)


  if aktualna ~= nastepna then
    grp.write(objekt_out_1B, nastepna)
  end
end


os.sleep(0.25)