sends temperature and humidity over coap and hosts a small webserver to display data
install this library (import as zip): https://github.com/automote/ESP-CoAP/
all other libs in the header files, all are standard arduino libraries
Careful with the esp-coap lib as it might clash with the standard coap lib in arduino.
built for esp8266 MCU v3 (with wifi module)
fill in wifi access point data and IP / port of your CoAP server.