Bugfix for heap low disconnect.

wled00/const.h

@@ -301,6 +301,12 @@
   #define JSON_BUFFER_SIZE 20480
 #endif
 
+#ifdef WLED_USE_DYNAMIC_JSON
+  #define MIN_HEAP_SIZE JSON_BUFFER_SIZE+512
+#else
+  #define MIN_HEAP_SIZE 4096
+#endif
+
 // Maximum size of node map (list of other WLED instances)
 #ifdef ESP8266
   #define WLED_MAX_NODES 24

wled00/wled.cpp

@@ -626,7 +626,7 @@ void WLED::handleConnection()
   // reconnect WiFi to clear stale allocations if heap gets too low
   if (now - heapTime > 5000) {
     uint32_t heap = ESP.getFreeHeap();
-    if (heap < JSON_BUFFER_SIZE+512 && lastHeap < JSON_BUFFER_SIZE+512) {
+    if (heap < MIN_HEAP_SIZE && lastHeap < MIN_HEAP_SIZE) {
       DEBUG_PRINT(F("Heap too low! "));
       DEBUG_PRINTLN(heap);
       forceReconnect = true;