diff --git a/README.md b/README.md
new file mode 100644
index 0000000..b38f95e
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+# Terrarium Controller
+
+It consists of 2 parts, IoT esp32 based controller and server that works as a proxy for other data storages.
+
diff --git a/esp32/src/config.h b/esp32/src/config.h
index c61ed28..3fed960 100644
--- a/esp32/src/config.h
+++ b/esp32/src/config.h
@@ -2,6 +2,6 @@
 #define CONFIG
 
 #define SENSORS_COUNT 2
-#define TERRARIUM_ID 1
+#define TERRARIUM_ID 3
 
 #endif
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