Tuesday, December 6, 2016

ESPEasy - P2 - Domoticz - RPi - MPDMv4 AC Dimmer setup example

UPDATE !! If you are using Domoticz under Windows, please take a look also at the PART3

Part 2 of the ESPEasy Series. This time we will go further and complete a full ESP8266 / Domoticz Dimmer setup on a RPi2 Board using the MPDMv4 Universal AC Dimmer Board.

You can find more details about ESP Easy firmware HERE, on the ESP Easy WIKI page

What we will need:

- ESP8266 NextEVO Board
- MPDMv4 Universal AC Dimmer - available also on Tindie Store !
- ESP Easy firmware
- Raspberry PI 2 Board
- Domoticz
   Lates available bin on a Raspberry PI 2 Board install :  
     sudo curl -L install.domoticz.com | bash


 LUA Script for Domoticz MPDM4 Universal AC Dimmer implementation:

commandArray = {}
DomDevice = 'MPDMv4_Dimmer';
IP = '';
PIN = "5";
if devicechanged[DomDevice] then
   if(devicechanged[DomDevice]=='Off') then
     print ("OFF dimm = "..uservariables['dimm']);
     CalcValue = 890;
   else if(devicechanged[DomDevice]=='On') then
        DomValue = uservariables['dimm'];
        print ("ON dimm = "..uservariables['dimm']);
        CalcValue = DomValue;
         DomValue = otherdevices_svalues[DomDevice];
         CalcValue = 900-(DomValue*9);
         commandArray['Variable:dimm'] = tostring(CalcValue);
         print ("dimm Level = "..uservariables['dimm']);
   runcommand = "curl 'http://" .. IP .. "/control?cmd=PWM,"  ..PIN.. "," .. CalcValue .. "'";
print("PWM calculated value= "..CalcValue);
return commandArray

 You need to save it in your Domoticz folder under "/scripts/lua/" subfolder as "script_device_MPDMv4_Dimmer.lua"

If followed step-by-step setup as done in the Youtube Video Tutorial above and all OK, you should end up with a working MPDMv4 AC Dimmer interface as below:

 In Part 3 you can find details about changes that need to be done for a Domoticz for Windows installation.

Happy Breadboarding!!

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