[Schematic Review Request] Air Quality Sensor

Hello everyone!

I am new to PCB design and thought I'll ask the Reddit experts for some of their input!

I’m designing a single-cell Li-ion air quality sensor powered by USB-C with a BQ25895 charger and an ESP32 microcontroller as a fun way to understand rechargeable battery based design.

The schematic includes default 5k1 CC resistors for *hopefully* 3A max draw (probably wrong here).
Any insights on potential functional issues or layout considerations would be greatly appreciated.

https://preview.redd.it/j5tmlhl6k60f1.png?width=1317&format=png&auto=webp&s=f1c01e73666465a023b9d2be959b1063442d4b08

Posted May 11, 2025, 4:37 PM UTC

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