Muse Gadgets

Muse gadgets are open source devices you build yourself. Program an off-the-shelf ESP32 board or set up a Raspberry Pi with our device SDKs, then connect Muse to your displays, buttons, sensors, actuators, and whatever else you've got lying on your workbench.

We open sourced the SDKs and firmware here. It's built by hackers, for hackers, just for fun. Side effects of tinkering may include bricked boards, voided warranties, brownouts, or bankruptcies. Proceed at your own risk!

ESP32 Device SDK	Connect your ESP32 board to Muse through our open source SDK. Throw in a screen to show images, add audio in and out, or wire up other sensors.
Linux Device SDK	Turn that spare Raspberry Pi or Linux box into a Muse gadget. Hack in your own commands to let Muse handle sysadmin chores or your Home Assistant setup.
Muse Gadgets Test (iPhone)	Stream your phone's camera, or a clip, to an ESP32 gadget's screen over Wi-Fi: H.264 or VP8 decoded on the board, 30 fps on the round 466 px boards. protocols/VIDEO.md explains how.

Before you flash or pair a gadget, get an SDK token and review the Gadget SDK Terms. Every gadget needs a token to pair.

ESP32 and Linux gadgets pair with the Muse app on iOS and Android, via Settings > Devices. Turn on Developer mode there first, then look for devices prefixed with "MuseGadget". Each directory has a README.md to get started and an AGENTS.md for coding agents like Muse Code.

For battery-input power profiling, see the porting recipe. The opt-in diagnostic core is board-neutral; boards supply its hooks and state matrices, and power_sweep.py drives the USB-free sweep. The isolated diagnostic does not pair or need an SDK token; fixture safety and explicit hardware authorization still come first, as the PPK2 rules describe.

Community

Meet other hackers who are building and customizing Muse gadgets in our community Discord. Get inspired, support each other, and share what you make.

License

Muse Gadgets is licensed under the Apache License, Version 2.0, found in LICENSE, except for these third-party files, which keep their upstream licenses:

Path	Upstream	License
esp32/components/minimp3/include/minimp3.h	lieff/minimp3	CC0-1.0, see LICENSE
esp32/components/muse/boards/ostb_echoear_display_init.h	78/xiaozhi-esp32 ESP-VoCat panel sequence	MIT, retained in the file header
JD9853A initialization sequence in board_seeed_xiao_s3_147.c	Seeed-Studio/Seeed_GFX2	MIT, see Seeed_GFX2.txt
esp32/components/muse/boards/viewe_smartring_display_init.h	VIEWESMART/smartring_plus panel sequence	Apache-2.0 under VIEWE's copyright, in the file header
esp32/main/pixel_font.c	Adafruit GFX glcdfont.c	BSD-2-Clause, in the file header
esp32/components/muse/fonts/	GNU Unifont 16.0.04, Noto Sans SC, and Montserrat Medium via LVGL, subsets (see its README)	SIL Open Font License 1.1 (Unifont also GPL-2.0+ with the font embedding exception)
esp32/components/muse/eink/fonts/montserrat.ttf	Montserrat Medium, via LVGL v9.5.0	SIL Open Font License 1.1
esp32/components/muse/eink/fonts/unscii.ttf	unscii-8	Public domain
esp32/components/muse/eink/fonts/symbols.ttf	Font Awesome 5 Free, via LVGL v9.5.0	SIL Open Font License 1.1 (icons CC BY 4.0)
esp32/main/epd_ssd1677.c	Seeed-reTerminal-E10xx-Firmware's SSD1677 refresh sequence	MIT, retained in the file header
esp32/components/tinyh264/src	the Android Open Source Project's H.264 decoder, via udevbe/tinyh264	Apache-2.0, AOSP's copyright, see LICENSE
esp32/components/libvpx_vp8/src	libvpx v1.16.0's VP8 decoder, trimmed	BSD-3-Clause, the WebM Project authors' copyright, see LICENSE, with Google's patent grant in PATENTS

Dependencies fetched at build time are under their own licenses: ESP-IDF components (into esp32/managed_components/), and the simulator's LVGL and SDL (listed in esp32/simulator/THIRD_PARTY.md).

The Apache License does not cover the Jollybot avatar.

Muse Gadgets Test's sample clips aren't in this repository: the app fetches a few seconds of the Blender Foundation's open movies (CC BY 3.0) when one is played, and shows their credits.

Muse Gadgets Test can use x264 (GPL-2.0) on the phone; this repository carries none of its code. An APK or iPhone app you build with it is under the GPL (android/musegadgetstest/README.md, ios/musegadgetstest/README.md).