2019-05-08 (W) Little Drummer Bot LittleDB

The rushed construction of this project meant that not everything was well thought out and placing the buttons resting on the lid of the case was a good example. If the wires had been flexible, the cause could close, and it would be okay that the whole enclosure wobbled with the lid open, but that wasn't a consolation. It was still necessary to prop up the lid, but it could be a hack job. An old Tic Tac container was covered in a sticker, filled with batteries, and studded with magnets to hold it to the lid during play.
Magnet case weighted with AA batteries

Memorizing the instrument of each button was not going to happen, so each button was labeled. These buttons will have different functions in different modes, like the mode below.
Labels on capacitive buttons

Entering a tempo by incrementing and decrementing a value with specific buttons seemed like a logical way to set up a rhythm but not necessarily intuitive. For the second mode, a tempo was set by touching the buttons, which is known as "tap tempo." The program looks at the time between taps and calculates the average of the five most recent taps. An onboard LED will flash in time with the current tempo setting so a correctly timed tap will align with the light flicker.
(0:35) Demonstration of tempo learning

The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6

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