You can get a nearly fully built Beat707 Mikro 2.0, all you need to add is the SD Card, Buttons for the Interface and the USB power. This is an almost complete but fully tested PCB with all the required components. Scroll Down to check out some more information about the Beat707 Mikro Sequencer.

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Beat707 Mikro

Open Source Arduino Compatible MIDI Sequencer / Groove Box

  • 16 x 2 Steps (Double Steps) and 4 Pattern Variations (ABCD) for a total of 128 Steps per pattern on both Drum and Note Tracks, 99 patterns total.
  • 14 Drum Tracks, 2 Accent Tracks.
  • 09 Note/CC Tracks - Note# and Velocity per Step or MIDI CC (Controller) Type and Value.
  • Each step on both modes have: Off, Regular Note On, Double Note, Double Note In. On Note Tracks you also have Slide and Note Off.
  • MIDI Processor Per Track. EG: Fade In, Fade Out, Chords. Including a special Custom Chord creator, which allows you to create 12 different 5 key chords. Those will not follow the played key, but only the played octave. So you can add multiple C, D or whatever you want to different keys in an octave and have those play according to the played octave.
  • 99 Slots Song, with Pattern# and Repeat# per Slot.
  • 99 Songs Space with Song Name support.
  • Pattern and Song Modes.
  • Mirror mode for editing all the 4 Pattern Variations at once.
  • SD Card Support (required, as it stores program related data).
  • The hardware uses two Arduino ATmega328 compatible chips for parallel processing. One takes care of the SD Card and Interface while the other only Sequencing.
  • All SD Data is stored in .txt readable format.
  • LCD 16x2 Interface.



About the Beat707 Mikro PCB: the only thing missing are the interface buttons which you will need to provide and attach to the PCB Main Headers.See the video on our front-page for details. The Headers has all the 11 buttons pins and ground pin ready for connection directly to any push button you may want to use. No keyboard matrix used, no extra components required as we use internal pull-up resistors for each button.


For more details about the software and hardware, visit the official product files on


We got 6 x Beat707 V1 Boards, the original Beat707 project, all ready to go!

Click the following button to purchase. Worldwide Shipping Included.

I will post a link to the BOM and Schematics soon.

Cheers, WilliamK

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