---
:LED_BUILTIN: 13
:A0: 54
:A1: 55
:A2: 56
:A3: 57
:A4: 58
:A5: 59
:A6: 60
:A7: 61
:A8: 62
:A9: 63
:A10: 64
:A11: 65
:A12: 66
:A13: 67
:A14: 68
:A15: 69
:SS: 53
:MOSI: 51
:MISO: 50
:SCK: 52
:SDA: 20
:SCL: 21