Fan control over http with virtual dimmer and homebridge

[mistervinnie]

I have a pwm fan that is controlled by an ESP. I can control the fan by sending a value, something like http://192.168.1.50?speed=800
To control it, I've set up a dummy dimmer switch and this lua code:

Code: Select all

commandArray = {}
DomDevice = 'myfan';
IP = '192.168.1.50';
if devicechanged[DomDevice] then
   if(devicechanged[DomDevice]=='Off') then 
     DomValue = 0;
   else
     DomValue = otherdevices_svalues[DomDevice];   
	CalcValue = (7.23* DomValue) + 300;
   end
   if CalcValue==nil then CalcValue=0 end
   runcommand = "curl 'http://" .. IP .. "?speed=" .. CalcValue .. "'";
   os.execute(runcommand);
   print("PWM value= "..CalcValue);
end
return commandArray

All the above works like a charm

The "trouble" starts in Homebridge/Homekit. I run homebridge with eDomoticz plugin on the same raspberrypi as where I run Domoticz.
It shows up as a light instead of a fan.

When I add the virtual switch by clicking "Manual Light/Switch" from the switch tab and choose a dimmer with type AC, I get this:



And this does show up as a fan in homebridge/homekit.
Left is the Dimmer of type AC, right Dimmer of type Switch


From what I've read here https://www.sigmdel.ca/michel/ha/x10/pole_04_en.html that last method is not the correct way to set up a virtual dimmer. With this solution there are steps of 6% and I need to modify the lua, because it doesn't pass along 0-100%, but discrete steps.

I would like to know if anyone managed to create a proper virtual dimmer switch of some sort that shows up as a fan in homebridge/homekit.