diff --git a/HGD4_reversed/boards/hgd6.json b/HGD4_reversed/boards/hgd6.json
new file mode 100644
index 0000000..b670a90
--- /dev/null
+++ b/HGD4_reversed/boards/hgd6.json
@@ -0,0 +1,51 @@
+{
+    "build": {
+      "arduino":{
+        "ldscript": "nrf52_xxaa.ld"
+      },
+      "core": "nRF5",
+      "cpu": "cortex-m4",
+      "extra_flags": "-DARDUINO_NRF52_DK",
+      "f_cpu": "64000000L",
+      "mcu": "nrf52840",
+      "variant": "nRF52DK",
+      "zephyr": {
+         "variant": "nrf52840dk_nrf52840"
+      }
+    },
+    "connectivity": [
+      "bluetooth"
+    ],
+    "debug": {
+      "default_tools": [
+        "jlink"
+      ],
+      "jlink_device": "nRF52840_xxAA",
+      "onboard_tools": [
+        "cmsis-dap",
+        "jlink"
+      ],
+      "svd_path": "nrf52840.svd"
+    },
+    "frameworks": [
+      "arduino",
+      "mbed",
+      "zephyr"
+    ],
+    "name": "HGD6 nRF52840",
+    "upload": {
+      "maximum_ram_size": 262144,
+      "maximum_size": 1048576,
+      "protocol": "jlink",
+      "protocols": [
+        "jlink",
+        "nrfjprog",
+        "stlink",
+        "blackmagic",
+        "cmsis-dap",
+        "mbed"
+      ]
+    },
+    "url": "https://unknown.org",
+    "vendor": "Unknown"
+  }
\ No newline at end of file
diff --git a/HGD4_reversed/platformio.ini b/HGD4_reversed/platformio.ini
index 7a75c3f..4149e47 100644
--- a/HGD4_reversed/platformio.ini
+++ b/HGD4_reversed/platformio.ini
@@ -10,7 +10,7 @@
 
 [env:nrf52840_dk]
 platform = nordicnrf52
-board = nrf52840_dk
+board = hgd6
 framework = arduino
 board_build.variants_dir = variants
 board_build.variant = hgd6
@@ -18,3 +18,5 @@ lib_deps =
 	adafruit/Adafruit Unified Sensor@^1.1.15
 	adafruit/Adafruit LIS3DH@^1.3.0
 	sparkfun/SparkFun Ambient Light Sensor Arduino Library@^1.0.4
+build_unflags = "-DNRF52"
+build_flags = "-DNRF52840_XXAA"
\ No newline at end of file
diff --git a/HGD4_reversed/src/main.cpp b/HGD4_reversed/src/main.cpp
index 75ff6a7..fb7b417 100644
--- a/HGD4_reversed/src/main.cpp
+++ b/HGD4_reversed/src/main.cpp
@@ -43,16 +43,30 @@ void setup() {
   Wire.begin();
   //set i2c pins 
   pinMode(15, OUTPUT);
-  //initial watchdog feeding, necessary to avoid reset. this has to be in this position because otherwise i2c dies
+  //needed for some boards
   in1_handler();
 }
 
+int ptt = 34;
+
 void loop() {
   Serial.println("loop");
-  busscan();
-  measuretemp();
-  lightsense();
-  delay(1000);
+  pinMode(29,OUTPUT);
+  digitalWrite(29,HIGH);
+
+  pinMode(34,OUTPUT);
+  digitalWrite(34,HIGH);
+  delay(600);
+  digitalWrite(34,LOW);
+  delay(600);
+  //testallpins();
+  //measuretemp();
+  //lightsense();
+  //pinMode(ptt,OUTPUT);
+  //digitalWrite(ptt,HIGH);
+  //delay(100);
+  //digitalWrite(ptt,LOW);
+  //delay(100);
 }
 
 void test1pin(int i,int d){
@@ -155,14 +169,17 @@ void busscan(){
 }
 
 void testallpins(){
-  for (size_t i = 0; i < 64; i++){
+  for (size_t i = 36; i < 64; i++){
     if(i != 2 && i != 29){
     Serial.println(String(i));
-    pinMode(i, OUTPUT);
-    digitalWrite(i, HIGH);
-    delay(50);
-    digitalWrite(i, LOW);
-    delay(50);
+    for (size_t  j= 0; j < 50; j++)
+    {
+      pinMode(i, OUTPUT);
+      digitalWrite(i, HIGH);
+      delay(50);
+      digitalWrite(i, LOW);
+      delay(50);
+    }
     }
   }
-}
+}
\ No newline at end of file
diff --git a/HGD4_reversed/variants/hgd6/variant.h b/HGD4_reversed/variants/hgd6/variant.h
index d9db839..2581cb4 100644
--- a/HGD4_reversed/variants/hgd6/variant.h
+++ b/HGD4_reversed/variants/hgd6/variant.h
@@ -1,26 +1,10 @@
-/*
-  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
-  Copyright (c) 2016 Sandeep Mistry All right reserved.
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either
-  version 2.1 of the License, or (at your option) any later version.
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the GNU Lesser General Public License for more details.
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
 #ifndef _VARIANT_GENERIC_
 #define _VARIANT_GENERIC_
 
 #include "nrf.h"
+
 #include "nrf_peripherals.h"
 
-/** Master clock frequency */
 #if defined(NRF52_SERIES)
 #define VARIANT_MCK       (64000000ul)
 #else
@@ -81,19 +65,19 @@ static const uint8_t A5  = PIN_A5 ;
  * Serial interfaces
  */
 // Serial
-#define PIN_SERIAL_RX       (17) // P0.00
-#define PIN_SERIAL_TX       (22) // P0.01
+#define PIN_SERIAL_RX       (32)
+#define PIN_SERIAL_TX       (33)
 
 /*
  * SPI Interfaces
  */
 #define SPI_INTERFACES_COUNT 1
 
-#define PIN_SPI_MISO         (12) // P0.22
-#define PIN_SPI_MOSI         (41) // P0.23
-#define PIN_SPI_SCK          (24) // P0.24
+#define PIN_SPI_MISO         (12)
+#define PIN_SPI_MOSI         (41)
+#define PIN_SPI_SCK          (24)
 
-static const uint8_t SS   = 25 ;  // P0.25
+static const uint8_t SS   = 25 ;
 static const uint8_t MOSI = PIN_SPI_MOSI ;
 static const uint8_t MISO = PIN_SPI_MISO ;
 static const uint8_t SCK  = PIN_SPI_SCK ;