Franzis 65325 pretzel iot board franzis 9783645653251 p the franzis pretzel internet of things main board features an arduino nano compatible design linked via a serial channel to an esp8266 wireless module that has become the go to device for iot applications the board can be programmed in c c via the arduino ide and has an integrated tcp ip stack a tcp udp server and can function as an access point using simple at commands to control the wifi module you can connect to your home networ