An ATmega328P was used as the main microcontroller to drive the MP3 player module and A4988 stepper motor controller. The stepper motor was attached to a drawer slide via a GT2 timing belt and ...

SBK_BarDrive Library High-level Arduino library for controlling animated LED bar meters using MAX7219/MAX7221 or HT16K33 drivers. Ideal for prop-making, visual meters, and signal-driven lighting ...