25/06/2018 

- coded the core and added the splash logo and main screen icons.

- added to monitor 3 NTC sensors 

- added set temp value and sensor reading on oled display

To do 

- add menu system to edit the max temp and set temp values 

- add the conditionals to check for

- add the warning icons and thermal runaway icons 

- add buzzer to warn user 

- add counter to allow pool before triggering realy

- add save to eeprom to save all details 

- add alarm tone if over temp detected.