diff --git a/README.md b/README.md
index 42b6e76..cab8639 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,15 @@
-TeensyStripController 1.03
+TeensyStripController 1.04
 ==========================
 
-Firmware for a Teensy 3.1 or Teensy 3.2 to control WS2811/WS2812 based ledstrips. Fully compatible with the DirectOutput Framework.
+Firmware for a Teensy 3.1, 3.2 or 4.0 to control WS2811/WS2812 based ledstrips. Fully compatible with the DirectOutput Framework.
 
 ![Teensy 3.1 with OctoWS2811 adaptor](http://www.pjrc.com/store/octo28_adaptor_6.jpg)
 
 
 Hardware
 --------
-This code has been designed for Teensy 3.1 or Teensy 3.2. For easy installation of the ledstrips is is highly recommended to get a OctoWS2811 adaptor board as well. 
+This code has been designed for Teensy 3.1, 3.2. or Teensy 4.0 For easy installation of the ledstrips is is highly recommended to get a OctoWS2811 adaptor board as well.
+
 Both boards are available at http://pjrc.com/store/ 
 For the Teensy be sure to get a Teensy 3.2, preferably the version which has the pins already soldered in.
 
@@ -27,11 +28,10 @@ To drive the controller at least DirectOutput Framework R3 is required. Check ou
 Integrated Product
 ------------------
 
-The Oak Micros Pinball Addressable LEDs (PAL) board is a pre-built integrated product that can be used to control up to 8 addressable LEDs strips. It uses the Teensy 3.2 and the latest software from this site. It includes a pushbutton which can be used to initiate a LED test when powered up and has a pluggable screw connector for power and 6 LED connections. The remaining two other LED connections are available on an optional 0.1" header.
-
-![Oak Micros PAL board](http://vpforums.org/imghost/24/pal_board.jpg)
+For people not very comfortable with lots of wires, stripping and crimping, GermanGamingSupplies  developed a nice little Box that makes it much more easy and convenient to install it into your VPins.
+Go to Product: ![Link](https://germangamingsupplies.com/Teensy-Control-Box_1)
 
-For further information read the [user guide](https://drive.google.com/open?id=1Zk_5RxsWX4VIPhT4XtGlj1rNlBTug39a) and see [this thread](https://www.vpforums.org/index.php?showtopic=43482) on VPForums.org.
+![Teensy Control Box](https://germangamingsupplies.com/media/image/product/115/lg/teensy-control-box_1.jpg)
 
 Documentation
 -------------
diff --git a/TeensyStripController.ino b/TeensyStripController.ino
index 61ba512..5728af0 100644
--- a/TeensyStripController.ino
+++ b/TeensyStripController.ino
@@ -48,13 +48,18 @@
     pin 3 - Do not use as PWM.  Normal use is ok.
      
 */
-
+#include "arduino.h"
 #include "OctoWS2811Ext.h" //A slightly hacked version of the OctoWS2811 lib which allows for dynamic setting of the number of leds is used.
 
 //Definiton of Major and Minor part of the firmware version. This value can be received using the V command.
 //If something is changed in the code the number should be increased.
 #define FirmwareVersionMajor 1
-#define FirmwareVersionMinor 3
+#define FirmwareVersionMinor 4
+
+//For Teensy 4.0 you can define the nuber of ouput Pins - 8 should be good (for 3.1/3.2 this is only used for calculation and schould not changed)
+const int numPins = 8;
+//for tesnsy 4.0 you can change the standard port (schould not be done) - Not used for 3.1/3.2
+byte pinList[numPins] = {2, 14, 7, 8, 6, 20, 21, 5};
 
 //Defines the max number of leds which is allowed per ledstrip.
 //This number is fine for Teensy 3.2, 3.1. For newer Teensy versions (they dont exists yet) it might be possible to increase this number.
@@ -68,8 +73,8 @@
 #define TestPin 17
 
 //Memory buffers for the OctoWS2811 lib
-DMAMEM int displayMemory[MaxLedsPerStrip*6];
-int drawingMemory[MaxLedsPerStrip*6];
+DMAMEM int displayMemory[MaxLedsPerStrip * numPins * 3 / 4];
+int drawingMemory[MaxLedsPerStrip * numPins * 3 / 4];
 
 //Variable used to control the blinking and flickering of the led of the Teensy
 elapsedMillis BlinkTimer;
@@ -79,9 +84,13 @@ elapsedMillis BlinkModeTimeoutTimer;
 //Config definition for the OctoWS2811 lib
 const int config = WS2811_RGB | WS2811_800kHz; //Dont change the color order (even if your strip are GRB). DOF takes care of this issue (see config of ledstrip toy)
 
-OctoWS2811Ext leds(MaxLedsPerStrip, displayMemory, drawingMemory, config);
+#if defined(__IMXRT1062__)
+  OctoWS2811Ext leds(MaxLedsPerStrip, displayMemory, drawingMemory, config, numPins, pinList);
+#else
+  OctoWS2811Ext leds(MaxLedsPerStrip, displayMemory, drawingMemory, config);
+#endif
 
-word configuredStripLength=144;
+word configuredStripLength=448;
 
 //Setup of the system. Is called once on startup.
 void setup() {
@@ -142,6 +151,10 @@ void loop() {
         //Get max number of leds per strip  
         SendMaxNumberOfLeds();
         break;
+      case 'T':
+        //initiate Test over serial  
+        Test();
+        break;
       default:
         // no unknown commands allowed. Send NACK (N)
         Nack();
@@ -368,7 +381,7 @@ word ReceiveWord() {
 
 
 void Test() {
-  int microsec = 3000000;  // change them all in 3 seconds
+  int microsec = 250000;  // change color every 1/4 second
 
   ColorWipe(RED, microsec);
   ColorWipe(GREEN, microsec);