diff --git a/README.md b/README.md
index 855ee1d..ddfada9 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,31 @@
 # strawberry-pi-greenhouse
 Strawberry Pi Greenhouse is a little project that i made in my holidays. It's a software that sends sensor data (temperature, water level) to a Homeassistants instance and can receive commands from this HA instace to control a relay.
 
+# Hardware Installation
+
+GPIO Pin Layout:
+| Pin | Kabel                   | Pin | Kabel            |
+| --- | ----------------------- | --- | ---------------- |
+| 1   |                         | 2   | Ultraschall VCC  |
+| 3   | Temperatur SDA          | 4   | LED VCC          |
+| 5   | Temperatur SCL          | 6   |                  |
+| 7   |                         | 8   |                  |
+| 9   | Relay GND               | 10  |                  |
+| 11  |                         | 12  |                  |
+| 13  |                         | 14  |                  |
+| 15  |                         | 16  |                  |
+| 17  | Temperatur VCC          | 18  | Ultraschall Trig |
+| 19  |                         | 20  | Ultraschall GND  |
+| 21  |                         | 22  | Ultraschall ECHO |
+| 23  |                         | 24  |                  |
+| 25  |                         | 26  |                  |
+| 27  |                         | 28  |                  |
+| 29  |                         | 30  |                  |
+| 31  |                         | 32  |                  |
+| 33  |                         | 34  | Temperatur GND   |
+| 35  | Relay 1                 | 36  | Relay 2          |
+| 37  | Relay 3                 | 38  | Relay 4          |
+| 39  | Relay GND (for devices) | 40  |                  |
 
 # Software Installation
 
@@ -13,8 +38,6 @@ enable_uart=0
 
 #i2c Temperaturesensor
 dtoverlay=i2c-gpio,bus=2,i2c_gpio_delay_us=1,i2c_gpio_sda=2,i2c_gpio_scl=3
-#i2c Moisturesensor
-dtoverlay=i2c-gpio,bus=3,i2c_gpio_delay_us=1,i2c_gpio_auot=4
 ```
 
 Also you have to enable the i2c devices in the raspi-config menu. If you dont know how to do it you can just google it.