Welcome to AMYboard -- a powerful music synthesizer on a small modular-compatible board, for $29. AMYboard is built on the AMY synthesizer and runs MicroPython on an ESP32-S3.

AMYboard gives you:

• 128 Juno-6 analog patches and 128 DX7 FM patches, plus piano, drums, and custom synthesis
• MIDI in and out (USB gadget and TRS)
• CV in and out for modular synth integration (-10V to +10V)
• S/PDIF in and out for digital audio
• SD card for extra storage and samples
• I2C port for accessories -- encoders, displays, and more
• Python programmability -- write code to control every parameter of the synth
• Web editor at amyboard.com for patch design and sketch management

If you have problems with AMYboard, check out the troubleshooting page or find us on Discord.

-- DAn and Brian

AMYboard ships from Makerfabs. In the box you'll get the board itself with the connectors already on, and an optional front panel that you can use if you want to mount your AMYboard in a Eurorrack case. See Modular Synth Setup for details on the front panel and Eurorack mounting.

By default, our firmware boots your AMYboard up with what we call a sketch. This is code that can do anything you want on your AMYboard - make sequenced music, set up synthesizers, and much more. The sketch also contains the state of your "knobs" - each parameter of the default synth, like filters, frequencies, ADSRs, LFOs and effects.

You use AMYboard online to change the patches, load new presets, find fun sketches from others on our file sharing network AMYboard World, or write your own code to run on your AMYboard.

When AMYboard starts up, it sets up whatever patches are set to each channel and then runs the code that the user set up, if any. The code lets you build great interactive environments: you can load default patches and then have code modify them or change how inputs from CV or MIDI affect the patches, for example.

You can browse AMYboard World to find other sketches to get inspiration! Download them and change them to fit your needs.

You can also remove our custom firmware (it's easy to put back!) and run AMYboard under Arduino where you'll have full control over everything on AMYboard.

Front panel connectors (top to bottom, 10 jacks):

Other connectors:

AMYboard can be powered 3 ways:

• USB-C connector: standard 5V input via USB
• Modular 10-pin connector: a standard Eurorack connector can power AMYboard via the +12V connector
• I2C host: a Tulip Creative Computer or other 3.3V i2c connection via the Grove connector

If multiple power supplies are connected AMYboard will use the highest available voltage.

Before you do anything else, upgrade your firmware! The easiest way is online via your browser. See our firmware upgrading page for more info on how to upgrade.

1. Plug in USB-C from your computer to AMYboard. It powers the board and gives you a serial and MIDI connection.
2. Plug in headphones or speakers to the audio out jack.
3. Connect a MIDI controller (To your DAW using USB MIDI or TRS MIDI) and play! AMYboard boots with Juno-6 patch #0 on MIDI channel 1 by default.
4. Try out AMYboard online. Use AMYboard online in Control mode to change synth patches, try out code environments and see other people's patches and code on AMYboard World. You can send code and patches right to your AMYboard over a MIDI connection (TRS MIDI or USB).

1. Flip the DIP switches for modular 10vpp output. See our Modular page for more info.
2. Connect 10-pin modular power. Make sure to use a cable that has a "key" for the correct orientation.
3. Connect your CV and audio and MIDI cables. By default AMYboard plays a synth patch on MIDI channel 1. But it can do SO MUCH MORE.
4. Since the USB connection on your AMYboard will be hidden during a Eurorack install, use TRS MIDI to transfer sketches between AMYboard online and your AMYboard in a case.

If you have a Tulip Creative Computer, you can directly connect your AMYboard to it via the GROVE port and the back I2C HOST connector. Tulip will power and communicate with the AMYboard!

In Tulip, just

from machine import I2C
i2c = I2C(0, freq=400000)
amy.override_send = lambda x: i2c.writeto(0x3f, x)

And all sound will come from the AMYboard.

• Using AMYboard Online -- The web editor at amyboard.com for patch design and management
• Arduino Setup -- Using the AMY synth engine in Arduino projects
• Modular Synth Setup -- CV, gate, and MIDI integration with your modular rig
• Using Python -- Programming AMYboard with MicroPython
• Accessories -- Compatible displays, encoders, and other I2C accessories
• Troubleshooting -- Common issues and how to fix them

AMYboard is powered by AMY, an open-source synthesizer engine. To learn more about synthesis, patches, and the wire protocol:

• AMY synth documentation
• AMY API reference
• AMY MIDI documentation

Chat about AMYboard on our Discord!