diff --git a/platformio.ini b/platformio.ini
index 9eed5ae..7cdeb53 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -11,7 +11,8 @@
 src_dir = lighthub
 ;monitor_speed = 115200
 env_default =
-    megaatmega2560
+;    megaatmega2560
+;    lighthub21
 ;    megaatmega2560-net
 ;    due
 ;    esp8266
@@ -22,7 +23,6 @@ env_default =
 ;    stm32
 ;    nrf52840
 
-
 ;build_dir = /tmp/pioenvs
 ;libdeps_dir = /tmp/piolibdeps
 [env:nrf52840]
@@ -302,7 +302,6 @@ lib_ignore =
     ESP_EEPROM
     EEPROM
 lib_deps =
-
     https://github.com/sebnil/DueFlashStorage
     https://github.com/anklimov/Arduino-Temperature-Control-Library.git
     https://github.com/anklimov/DS2482_OneWire
@@ -325,6 +324,49 @@ lib_deps =
     ClosedCube HDC1080
     SparkFun CCS811 Arduino Library
 
+[env:lighthub21]
+platform = atmelsam
+framework = arduino
+board = due
+build_flags = !bash check_custom_build_flags_lighthub21.sh
+lib_ignore =
+        DHT sensor library for ESPx
+        ESPDMX
+        ESP-Dmx
+        DMXSerial
+        WifiManager
+        DmxSimple
+        httpClient
+        Ethernet
+        Ethernet3
+        NRFFlashStorage
+        WebServer
+        UIPEthernet
+        ESP_EEPROM
+        EEPROM
+lib_deps =
+        https://github.com/sebnil/DueFlashStorage
+        https://github.com/anklimov/Arduino-Temperature-Control-Library.git
+        https://github.com/anklimov/DS2482_OneWire
+        https://github.com/anklimov/DmxDue
+        ArduinoHttpClient
+        https://github.com/anklimov/aJson
+        https://github.com/anklimov/CmdArduino
+        https://github.com/anklimov/ModbusMaster
+        https://github.com/anklimov/Ethernet2
+        https://github.com/knolleary/pubsubclient.git
+        https://github.com/anklimov/Artnet.git
+        FastLED
+        SD
+        SdFat
+        Adafruit Unified Sensor
+        DHT sensor library
+        https://github.com/arcao/Syslog.git
+        Streaming
+        https://github.com/livello/PrintEx#is-select-redecl
+        ClosedCube HDC1080
+        SparkFun CCS811 Arduino Library
+
 
 [env:controllino]
 platform = atmelavr