diff --git a/README.md b/README.md
index 1e66eda..e1570e0 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # fw-anwesenheit
 
+# Setup 
+
+In order to use the LED we need to enable the SPI interface on the Rpi. 
+You can enable it by running `sudo raspi-config`, or by manually adding `dtparam=spi=on` to `/boot/firmware/config.txt`.
+
 # Config 
 
 Environment variables: