Arduino code for the M5stack BalaC balancing robot: https://m5stack.com/products/bala-c-esp32-development-mini-self-balancing-car

This code is a modified version of the updated Coppercele's code: https://qiita.com/coppercele/items/527228e3f08c53597bd1

Main changes:

• Fixed the target angle (needs to be adjusted to your balaC balance angle)
• Added minimum duty (for removing the DC motor dead-band)
• Individual control of wheels (for compensating the different minimum duty of each DC motor)
• Added the loop frequency input to the Mahony filter, for improved sensor fusion
• Tuned PID gains (but it still have room for improvements)