Elegoo Smart Car Bot Revisited

Mainly refactored/cleaned up SmartCar_Core.ino file, in order to:

• Decrease ROM occupation from 10702 bytes (33%) to 6320 bytes (19%),

• Decrease globals usage from 468 bytes (22%) to 443 bytes (21%),

• Keep most of features unchanged,

• Remove useless parts & try and make code clearer,

• Try and make code cleaner (use homogeneous naming rules),

• Try and make code easier to sustain/modify, by factorizing things,

Notes

• Started from so-called version 3.0.2019.01.02, from Eleogoo website.