Full radio (sidecar + acoustic + electronics)8.4 MB
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composed of: acoustic box, acoustic lid, speaker, jst xh header, sidecar, lid, carrier-PCB, ESP32-S3-Zero, OLED, knob
3 phases

Sidecar — Electronics Box
Build the electronics sidecar body that integrates the Phase 1 front-panel coupon (v1.8, subject to fit-test verification) as the sidecar's front wall, plus 5 surrounding walls forming a closed box.
v2.3active
restyle (rounded corners + front chamfer) + USB-C raised for the female-socket riser; one of two radio shells (sibling: acoustic box), both at product v2.3.

Acoustic Box — Speaker Chamber
Build the acoustic chamber that houses the Gikfun 2" 4Ω 3W speaker and mates to the Phase 2a sidecar.
v2.3active
v2.3 adds the anti-warp lid chamfer + a JST-XH speaker-disconnect socket in the mating wall; software-modeled, awaiting print test. One of two radio shells (sibling: sidecar), both at product v2.3.

USB-C Coupon
A small test coupon: an exact crop of the Phase 2a sidecar (v2.2) around the USB-C cutout + the top two carrier-PCB mount bosses.
v2active
quick test print to verify USB-C alignment before reprinting the sidecar