Building an advanced guitar tuner with special features with a seeduino and a grove starter kit

@typro
Start here: How to get the best out of this forum

Your post is unreadable, too long, no breaks, not clear explanation of what you want, what you've tried and what help you need. The folk here want to help, but you have to show signs of trying to do stuff yourself and you have to be clear about what you want.

Good luck with your project.