Nursing eta app: new prototype, new hardware, using the same code...

Help!

i'm a noob in Arduino and have a question.

I'v written a code and build my first prototype with the next hardware:

  • arduino uno
  • sim900 shield
  • lcd 4x20
  • rgb light

now i want the code in a new prototype, a smaller one with the next hardware:

  • adafruit fona feather
  • lcd 4x20
  • rgb light
  • buzzer (when message comes in)

i can't figure out how i have to change my code!!
could someone help me?

My code is on Github:

sms_ontvangen_en_licht_aan_en_uit_lcd_auto.ino (5.37 KB)

i can't figure out how i have to change my code!!

If you really did write the app in the first place, that is a bit hard to believe.

My last post got removed i guess, probably because my answer did not give an answer to the last question...

As i told before, i'm a noob... a nurse from the netherlands to be exact who want's to help his patients by building a device using Arduino.

I used differents codes from online sources to make a code that works for me, so indirectly i did not write the code myself but why is this question relevant???

thanks for reacting but it did not help me.