Since 2015 exists an integration of the ESP-toolchain for the arduino ide called the [https://github.com/esp8266/Arduino "ESP8266 Arduino Core"] on github. The installation is well documented.
# You basically have to install the ESP8266 board with the Board Manager.
# And install the tool ESP8266FSfor upload files to the flash chip. The installation instructions can be found in the 'ESP8266 Arduino Core' Documentation in the chapter 'Filesystem' sub chapter 'Updating files to the filesystem'.
== Software ==
The software for the Rundbunt is on [https://github.com/strangeoptics/RundbuntMiniWifi github].