I’ve completed the schematic and verified that it meets all of the original success criteria:

• Power subsystem: Li-Po battery → TP4056 → ON/OFF slide switch → AMS1117-3.3 with 10 µF + 0.1 µF decoupling is fully implemented. • Main controller and decoupling: ESP32-WROOM-32 placed with its 0.1 µF cap, EN pull-up and reset cap, and a 6-pin programming header for EN, IO0, TX/RX, 3.3 V, and GND. • I²C bus: MAX30102 and MPU6050 share GPIO21/22 with 4.7 kΩ pull-ups and each sensor has its own 0.1 µF decoupling cap. • SPI OLED: Waveshare OLED on GPIO18/23/5/17/16 with local 0.1 µF decoupling. • ESP32-CAM: Standard camera header/interface wired to the ESP32’s signals and decoupled. • Buzzer driver: Buzzer on GPIO13 via BC547 transistor, protected by a 1N4148 flyback diode, plus a local 0.1 µF decoupling cap. • Final checks: Every IC has a dedicated 0.1 µF cap, power rails and signal nets are fully routed and labeled.

With this, the schematic is ready for review and PCB layout preparation. Let me know if you’d like any tweaks or to move on to the board design.