Handheld sequencer converts image to MIDI

Arduino Music

The Image Scanning Sequencer uses photocells with Arduino to generate streams of MIDI notes –

It uses LDRs to measure the gray-scale of specific point of a image, and triggers midi notes from a selected threshold. When the threshold is reached the velocity will be set by the darkness at that point. the darker point the higher the velocity will be.

The sequencer plays the notes as a arpeggiator, i chose for this playback method because i dont have a midi device that can play 24 keys at the same time.. There are 2 different arpeggio modes. One rearranges the playback sequence to the active notes velocitys. And the second mode changes the arpeggio playback speed to the amount of notes that are active. If this mode is not selected the playback speed is set by a potentiometer. These modes can also be combined.

Image Scan Sequencer

2 thoughts on “Handheld sequencer converts image to MIDI

  1. Kyle McDonald says:

    My friend Blair Neal’s installation earlier this year, “Color a Sound” http://vimeo.com/953967 where he set up an overhead projector, camera, and Max/MSP to do color->note conversion. He uses the different colors for different octaves.

Comments are closed.

Discuss this article with the rest of the community on our Discord server!


Maker Faire Bay Area 2023 - Mare Island, CA

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 15th iteration!

Buy Tickets today! SAVE 15% and lock-in your preferred date(s).