Introduction

This project is a desktop charger based on the ESP32-S3-WROOM-1-N16R8 and SW3538, featuring 4A4C (4 USB-A and 4 USB-C) ports. It displays charging information—such as voltage, current, power, protocol, and time—for each individual port via an integrated screen.

Features

Provides four independent multi-protocol fast-charging channels, with real-time display of voltage, current, power, charging protocol, and duration for each port.
USB-A Ports Support:
QC3.0 / QC2.0 / AFC / FCP / SCP / PE2.0 / PE1.1 / SFCP / TFCP / VOOC
USB-C Ports Support:
PPS / PD3.0 / PD2.0 / QC5 / QC4+ / QC3+ / QC3.0 / QC2.0 / AFC / FCP / SCP / PE2.0 / PE1.1 / SFCP / TFCP
Default Output State:
    USB-A ports output 5V by default
    USB-C ports are disabled by default
Multi-Port Operation:
    Single-port mode: Full fast-charging capability supported
    Dual-port mode: Outputs 5V only, with individual current limiting per port

Specifications

Main Controller: Espressif ESP32-S3-WROOM-1-N16R8
Display: 3.5-inch IPS RGB screen (ST7701 driver), resolution 340 × 800
Charging IC: Zhixing SW3538
Cooling Fan: 4010 size, available in 24V or 5V; voltage selection via jumper pads on the PCB depending on fan used
Power Input: XT60 connector, 24V input
Current/Voltage Monitoring: INA226 for monitoring input voltage and current
Temperature Sensing: DS18B20 sensor for temperature detection and automatic fan control
Enclosure: Aluminum case, dimensions 106 × 55 × 100 mm
Design Approach: Modular architecture for ease of assembly and maintenance