diff --git a/.gitignore b/.gitignore
index 73e209a..bbffae7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.pio
 .pioenvs
 .piolibdeps
 .vscode/.browse.c_cpp.db*
diff --git a/platformio.ini b/platformio.ini
index 77fafcc..57e7469 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -13,28 +13,14 @@
 
 [common]
 framework = arduino
-platform = espressif8266
+platform = platformio/espressif8266@2.6.3
 board = esp12e
 upload_speed = 921600
 monitor_baud = 115200
 lib_deps = 
-    Hash
-    TaskScheduler
-    SPIFFS
+    arkhipenko/TaskScheduler@^3.8.5
     ArduinoJson@5.13.4
     
-;[env:build]
-;src_filter = +<*> -<examples/>
-;platform = ${common.platform}
-;board = ${common.board}
-;upload_speed = ${common.upload_speed}
-;monitor_baud = ${common.monitor_baud}
-;framework = ${common.framework}
-;lib_deps = ${common.lib_deps}
-;build_flags = -DLED_PIN=2 -g
-;upload_port = /dev/ttyUSB0
-;upload_port = 192.168.1.168
-
 [env:basic]
 platform = ${common.platform}
 board = ${common.board}
diff --git a/src/JsonStruct.h b/src/JsonStruct.h
index 2753ead..fed0ade 100644
--- a/src/JsonStruct.h
+++ b/src/JsonStruct.h
@@ -35,8 +35,9 @@ struct JsonStruct
         DynamicJsonBuffer jsonBuffer(JSON_ARRAY_SIZE(300));
         JsonObject &root = jsonBuffer.createObject();
         mapJsonObject(root);
-        char jsonChar[jsonBuffer.size()];
-        root.printTo((char*)jsonChar, root.measureLength() + 1);
+        size_t jsonSize = root.measureLength() + 1;
+        char* jsonChar = new char[jsonSize];
+        root.printTo(jsonChar, jsonSize);
         return jsonChar;
     }