diff --git a/README.md b/README.md
index 39adb70..c7b255c 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,8 @@ peripherals
   - 2x to display the audio file number
 - 1x 16-channel multiplexer to communicate with the 7-segments individually
 - 8x2 button switches to adjust the recording numbers and seconds
-- 2x ball-based tilt sensor to detect the orientation
+- 1 button switch to detect clap
+- 1x tilt sensor to detect movement
 - 1x DS1307 RTC to keep track of the time
 
 connections
@@ -54,7 +55,7 @@ Connect the peripherals the following way (peripheral signal; peripheral signal;
   - GND; 4; ; GND;
   - SCL; 6; PB10; I2C2_SCL;
   - SDA; 5; PB11; I2C2_SDA;
-  - SQW; 7; ;; to synchronize the seconds
+  - SQW; 7; PBO; GPIO; to synchronize the seconds
 - 2x MAX7219 in chain to show date and time
   - VCC; 19; ; +5V;
   - GND; 4; ; GND;
@@ -66,6 +67,9 @@ Connect the peripherals the following way (peripheral signal; peripheral signal;
   - GND; 1; ; GND;
   - CLK; 18; PB6; GPIO
   - DIO; 17; PB7; GPIO
+- 1x tilt sensor
+  - VCC/GNG; ; ; +3.3V;
+  - OUT; ; PA10; WKUP; pulled low, wake up on rising edge
 
 All pins are configured using `define`s in the corresponding source code.