Main components

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Part NumberDescription
IS31FL3733-QF12x16 LED matrix driver with 8-bit PWM and breathing, QFN-48
ESP32-S3-WROOM-1RF Module, ESP32-S3 SoC, Wi-Fi 802.11b/g/n, Bluetooth, BLE, 32-bit, 3.3V, onboard antenna, SMD
AMS1117-3.31A Low Dropout regulator, positive, 3.3V fixed output, SOT-223

Rello schematic

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Rello board layout

Rello PCB render

Top PCB
Bottom PCB