Technical reference

Hardware and platform specs

Area	Specification	Notes
Compute	Raspberry Pi Zero 2 W	Primary runtime host with Wi-Fi and Bluetooth.
Display	1.3" SH1106 OLED (128×64)	I2C over GPIO2/3.
Audio out	MAX98357A + 40mm 4Ω speaker	I2S digital input, mono output stage.
Audio in	INMP441 microphone	I2S capture path sharing clock lines.
Status LED	WS2812B single pixel	GPIO10 data, 5V power.
Power	5V 3A USB-C	Required for stable peak behavior.
Storage	32GB Class 10 microSD	OS and runtime assets.
Enclosure	PLA printed chassis + M2 inserts	Serviceable assembly and cable strain control.