Which board should I use ?

Hello,

I would like to develop a smart device using :

  • Thermometer
  • GPS
  • LED
  • Screen to display information
  • heartbeat sensor

I think that would be a good start :wink:

Please, could you help me to find the good board that might be used for those specifications.
Knowing that it has to be the smallest as possible as I do not have enough space to integrate it.

Thank you so much guys !