Here is a datalogger I have built with an old PCB from a project. The PCB itself has different sensors such as NTC, flow sensors, resistors and leds. I have used the NTCs sensors to retrieve the values every minute and send to a Server.
For this I have used Django and Charisma django, a port from a html template I have made (for more information visit this post).
I placed a sensor outside my window, two inside the room and one inside the radiator. The microcontroller use ADC interrupts to poll the temperature and send it over serialport to a WiFi module. This WiFi module send the data to the server.
Check this project live here
