User Manual

Code Analysis

#define NTD

Here is the deﬁnition of the frequency of the D key, which is divided into bass, alto, and treble.

#define WHOLE 1

#define HALF 0.5

#define QUARTER 0.25

#define EIGHTH 0.25

#define SIXTEENTH 0.625

Note: rhythm is divided into one beat, half beat, 1/4 beat, 1/8 beat, we specify a beat note time is

1;Half beat is 0.5;1/4 beat is 0.25;1/8 of 0.125.

int tune[]=...

List the frequencies according to the spectrum.

float durt[]=...

List the beats according to the spectrum.

delay(100*durt[x]);

Control LED lights on and oﬀ respectively.

Demo Eﬀect and Serial Print Result:

The buzzer will beep a tune while the LED module will ﬂicker with same frequency.

Breakout Guide

Connect Grove LED to Seeeduino Lotus’s digital signal interface D4, connect Buzzer to

Seeeduino Lotus’s digital signal interface D5.

Grove Beginner Kit For Arduino®