#27 +README to #31 and explaind in more detail.

integration/README.md

@@ -0,0 +1,28 @@
+# Integration of ESP32 with relay
+
+# Switch type
+
+Depending on what type of switch you are trying to remote controll you will need slighty difrent wiering.
+
+* Check what type of switch you are trying to remot control.
+  * Is it normaly open (will it not let thru electrycity normaly)?
+    * You need NO relay schematic.
+  * Is it normaly closed (will it let thru electrycity normaly)?
+    * You need NC relay schematic.
+  * Dose it have any other component connected (like a resistor)?
+    * You need corespondecnly NO or NC with R(Resistor).
+
+### NO
+For a normay open button you need to connect the relay in parallel as shown bellow.
+
+<img src="esp32_integration_NO.jpg" height="400">
+
+### NC
+For a normay closed button you need to connect the relay in series as shown bellow.
+
+<img src="esp32_integration_NC.jpg" height="400">
+
+### NC Resistans
+For a normay closed button you need to connect the relay in series as shown bellow and let the resistor go from befor the first button to after the last.
+
+<img src="esp32_integration_NC_R.jpg" height="400">