The Wooden Audio Sequencer is a tangible music controller, created as a project by Ernest Warzocha, Jakub Wilczewski & Maciej Zelaznowski for the Physical Computing and Creative Coding course at School of Form.
The custom controller follows the standard timeline, with individual rows for instruments played. The are IR reflective sensors in each hole. They read the color at the bottom of wooden discs so the sequencer can play more then one variant of sound.
Here’s a video demo:
You can see a step-by-step guide to how this was built at Warzocha’s Behance page.