In the attachment a picture of the hardware I am using:
a TouchScreen 4.2″ TFT
+ an RTC b.b.
The reason of this is:
-I wanted to be an independent full time running unit.
-I wanted to be remotely or/and locally controlled
-I needed sufficiently powerfull MCU in term of Flash and memory unit
-I needed touchscreen for local full control and easy supervision( a very inexpensive unit)
I use Arduino/core libraries.
Total HW cost about 15$.
I will give more detail soon!