diff --git a/src/dashboards/chaosdorf.haml b/src/dashboards/chaosdorf.haml
index 07c31dc..aba4097 100644
--- a/src/dashboards/chaosdorf.haml
+++ b/src/dashboards/chaosdorf.haml
@@ -14,7 +14,7 @@
   .row
     %div{"data-id" => "downlink-traffic", "data-max" => "1000000000", "data-min" => "0", "data-title" => "Downlink Traffic", "data-view" => "Meter", "data-suffix" => "bit/s"}
     %div{"data-id" => "uplink-traffic", "data-max" => "50000000", "data-min" => "0", "data-title" => "Uplink Traffic", "data-view" => "Meter", "data-suffix" => "bit/s"}
-    %div{"data-id" => "power-total", "data-title" => "Power", "data-view" => "Graph", "data-suffix" => "W" }
+    %div{"data-id" => "lounge-co2", "data-title" => "CO2", "data-view" => "Graph", "data-suffix" => "ppm" }
     %div{"data-id" => "music", "data-header" => "now playing", "data-view" => "Music"}
   .row
     %div{"data-id" => "efa", "data-title" => "EFA: Kruppstr.", "data-view" => "Efa"}
diff --git a/src/jobs/mqtt.rb b/src/jobs/mqtt.rb
index d731e1e..f39ca71 100644
--- a/src/jobs/mqtt.rb
+++ b/src/jobs/mqtt.rb
@@ -1,6 +1,8 @@
 require 'mqtt'
+require 'json'
 
 power_series = Array.new(20).fill(0)
+co2_series = Array.new(180).fill(0)
 music_status = {}
 last_music_update = Time.now
 last_dorfstatus = "unknown"
@@ -16,30 +18,32 @@
     client.connect()
     puts "mqtt: connected to #{client.host} as #{client.client_id}."
     
-    client.subscribe('sensors/flukso/power/sum/30s_average') # power
+    client.subscribe('sensor/esp8266_64760E/data') # hackcenter co2 sensor
     client.subscribe('space/dorfstatus')
     client.subscribe('space/bell') # door bell
     client.subscribe('music/#') # music
 
     client.get do |topic,message|
       message = message.force_encoding('utf-8')
-      if topic == 'sensors/flukso/power/sum/30s_average'
+      if topic == 'sensor/esp8266_64760E/data'
         ##################################
-        # P O W E R                      #
+        # C O 2                          #
         ##################################
-        value = Float(message).round
-        power_series[0] = value
-        power_series.rotate!
+        # Hackcenter CO2
+        data = JSON.parse(message)
+        value = Float(data["co2_ppm"])
+        co2_series[0] = value
+        co2_series.rotate!
         case value
-        when 0..1500
+        when 0...1000
           status = "normal"
-        when 1500..3000
+        when 1000...2000
           status = "danger"
         else
           status = "warning"
         end
-        data = power_series.map.with_index{ |n,i| {"x" => -i, "y" => n} }
-        send_event('power-total', { points: data, status: status, moreinfo: "total power consumption" })
+        data = co2_series.map.with_index { |n,i| {"x" => -i, "y" => n} }
+        send_event('lounge-co2', {points: data, status: status})
       elsif topic == 'space/dorfstatus'
         ##################################
         # D O R F                        #
@@ -64,7 +68,7 @@
           SCHEDULER.in '1s' do
             send_event('music', music_status.clone)
           end
-        end
+        end     
       end
     end
     client.disconnect() # TODO: does this make sense?