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Studying the PCB components
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The following components were identified on the PCB:
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Spansion FL128PIF (Flash memory)
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Microchip 18LF2520 (MCU)
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Analog Devices ADXL345 (MEMS Accelerometer)
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FTDI FT232R (USB UART IC)
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L28B (Voltage regulator IC) Either Texas Instruments or Diodes Inc.
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ADRU (Battery charging IC)
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ML (Hall effect sensor for magnetic pull detection)
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