Click the flag to start the metronome. Use the up/down arrows to change the BPM. (ranges from 60 to 240 beats per minute) Use the left and right arrow keys to change between time signatures. (current options: none, 2/4, 3/4 and 4/4) The "none" time signature will remove the green thing. (idk what the musical term for this is, if there is one)
I made this because I was bored. I really don't know too much about music. This is also my first time using Scratch 3.0. Changelog: 2a - Added BPM and Time signature options. 1a - Pressed the Share button.