M5Stack StickC Plus2

$15-20

ESP32 stick (2MB PSRAM) with 1.14" LCD, mic, buzzer, IMU, IR, 200mAh battery. Full Muse UI with push-to-talk, but buzzer only, so replies can't be spoken on-device. M5Stack lists it as end-of-life; buy the StickS3 unless you already own one.

See the build steps Buy from shop.m5stack.com Compare prices, new and used

What it can do

Voice · Voice in, no speakeryes
Images · Coloryes
Touchscreenno
Camerano
Air sensorsno
Home-network tunnelyes
Batteryyes
Over-the-air updatesyes

Things to say to it

“(Hold to talk) Add milk to the grocery list.”“Show me the picture you made.”

What you need

1 × M5Stack StickC Plus2Buy
1 × USB-C data cableFind
1 × Printed desk stand (optional)Buy

Printable stand

Print it, or get it made

STL for printing, STEP for CAD, and a fab.json with print settings and fit checks.

M5Stack StickC Plus2 printable stand preview

Printable desk stand

32 x 43.5 x 54.1 mm · 16.0 g PLA

STL STEP fab.json

Dimensions from a published source. Print once and check the fit before batch printing.

Firmware

Build command

Your coding agent runs this for you. The full sequence (token, flash, pair) is on the build page.

tools/muse/board.sh build plus2

Limits

Good to know

The home-network tunnel lets Muse reach devices on your LAN that expose a local HTTP API. Treat it like giving the agent a foothold on your network.
Pairing has no manufacturer verification and can't prevent an active man-in-the-middle attack.
Builds are signed with the included development key and never enable Secure Boot. Enable NVS encryption (CONFIG_HOMEHUB_NVS_ENCRYPTION).
Custom ESP32 commands are not a documented API yet: the command set (display.draw_url, sensors.read, camera.capture, ...) is hardcoded in main/app.c.
End of life at the vendor

Alternatives