Dual-input 15 V USB-C PD/barrel power system with BQ25792 NVDC charging, independent 3S LiPo protection/balancing, and regulated 5 V/3.3 V rails for an ESP32-S3 GPS/LoRa carrier.

Altavoz portátil con batería Li-ion 3S, amplificador MA12070P mono para 4 Ω, módulo Bluetooth QCC5125 certificado, DSP, carga USB-C PD y gestión/indicación de batería.

Плата питания с входом USB-C PD 15/20 В, контроллером IP2721, защитой обратного тока и подключаемым модулем XL4015 CC/CV для общей шины 3S.

Production-ready 3S 18650 mini router/ONU UPS with 12V adapter input, no-reboot switchover, 12V/9V/5V regulated outputs, battery charging/protection, monitoring, and JLCPCB SMT assembly target.

Ultra-Compact ESP32 Robotic Control Module with 3S Battery, USB-C PD, 4WD Motor & Servo Support, and Integrated GPS/IMU

ESP32-C3 Smart 3S Li-ion/LiPo Battery Management System with Per-Cell Monitoring and Protection

Change History from V1: -13.56MHz tuning -larger instruction font -put some stuff on the back #template I wanted to create a business card that has some functionality and shows off a bit of my portfolio IRL: -NFC to my flux page -here's the [instructables](https://www.instructables.com/PCB-Business-Card-With-NFC-Make-Yours-With-NFC-QR-/) -Put a bunch of modules on it Find the BoM [here](https://www.digikey.com/short/2db2vnmp)

A simple fixed linear voltage regulator board that can provide 3.3V up to 1A output and could operate down to 1V input-to-output differential. #firstpcbFlux

DIP825W47P254L1917H533Q14 PDIP-14 Texas Instruments LM324N 4-Channel industry standard operational amplifier 14-PDIP 0 to 70 https://pricing.snapeda.com/search/part/LM324N/?ref=eda Texas Instruments None In Stock Aliases: undefined