diff --git a/Software/IO_Pins.txt b/Software/IO_Pins.txt
new file mode 100644
index 0000000..36d0101
--- /dev/null
+++ b/Software/IO_Pins.txt
@@ -0,0 +1,27 @@
+Atmega   Arduino    Was
+----------------------------
+PB0         8      Servo02
+PB1         9      Servo03
+PB2         10     Servo04
+PB3         11     Servo05
+PB4         12     STBY
+PB5         13     Input_B2
+PB6         20*    Quarz
+PB7         21*    Quarz
+
+PC0         A0     Input_A2
+PC1         A1     Input_A1
+PC2         A2     LED_Weis
+PC3         A3     V_Read
+PC4         A4     SDA
+PC5         A5     SCL
+PC6         22*    RESET
+
+PD0         0      Rx
+PD1         1      Tx
+PD2         2      INT
+PD3         3      B_PWM
+PD4         4      LED_Rot/Gruen
+PD5         5      Input_B1
+PD6         6      A_PWM
+PD7         7      Servo01