diff --git a/README.md b/README.md
index 7431072..5a0d23e 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,21 @@ Connect the peripherals the following way (STM32F10X signal; STM32F10X pin; peri
 
 All pins are configured using `define`s in the corresponding source code.
 
+peripherals
+===========
+
+ESP8266
+-------
+
+AT firmware v0.51 from the espressif NONOS SDK 1.5.0 has been used for this project.
+Be sure to have configured the module to connect to the right access point beforehand using the following AT commands:
+
+- set station mode: `AT+CWMODE_DEF=1`
+- enable DHCP: `AT+CWDHCP_DEF=1,1`
+- set access point to connect to: `AT+CWJAP_DEF="essid","password"`
+
+When booting the micro-controller will reset the device and wait until the module connects to the access point and gets an IP.
+
 code
 ====