Main components

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Part NumberDescription
Teensy 4.1RT1062 Teensy 4.1 series ARM® Cortex®-M7 MPU Embedded Evaluation Board
Seeed Studio XIAO ESP32C3- ESP32-C3 Transceiver; 802.11 a/b/g/n (Wi-Fi, WiFi, WLAN), Bluetooth® Smart 4.x Low Energy (BLE) 2.4GHz Evaluation Board

ball unit schematic

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ball unit board layout

ball unit PCB render

Top PCB
Bottom PCB