From Analog Front End to Fabrication Files on an STM32F411 PPG PCB
A two-layer KiCad design connecting SFH7070 sensors, OPA2333 front ends, STM32F411, and a complete Gerber package.
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Sensor Acquisition
A NUCLEO-F411RE biosignal track covering ECG/PPG circuits, ADC, TIM1, USART2, and CMSIS-DSP processing.
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