Main components

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Part NumberDescription
RP2040A microcontroller by Raspberry Pi
BQ24074RGTUSB-Friendly Li-Ion Battery Charger and Power-Path Management, VQFN-16
RT6160A
VDD331MCTA
W25Q128JVPIQ128Mbit / 16MiB Serial Flash Memory, Standard/Dual/Quad SPI, 2.7-3.6V, SOIC-8
USBLC6-2SC6Very low capacitance ESD protection diode, 2 data-line, SOT-23-6
TPS22914BYFPR
MAX98357AEWLMono DAC with amplifier, I2S, PCM, TDM, 32-bit, 96khz, 3.2W, TQFP-16

board v1 schematic

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board v1 board layout

board v1 PCB render

Top PCB
Bottom PCB