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ESP32-S2-DevKit-Lipo Rev B1 Schematic

Hardware schematic for Olimex ESP32-S2-DevKit-LiPo featuring the ESP32-S2 module, LiPo battery charger, CH340T USB-UART bridge, and WS2812S RGB LED.

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Overview

This design document provides the circuit schematic for the Olimex ESP32-S2-DevKit-LiPo development board. It is based on the Espressif ESP32-S2-WROVER or ESP32-S2-WROOM modules. Key circuits include a LiPo battery charger using the Shanghai Belling BL4054B, a 3.3V LDO regulator via the Microchip MCP1700T, and a USB-to-UART interface powered by the WCH CH340T. The board incorporates a Worldsemi WS2812S RGB LED, USB-OTG support, battery voltage sensing, and dual 21-pin extension headers for peripheral access. It also includes auto-programming circuitry using DTR/RTS signals and features an ultra-low deep-sleep power consumption of 20µA.

Use Cases

  • IoT prototyping with ESP32-S2
  • Battery-powered wireless sensor nodes
  • USB-OTG hardware development
  • Low-power Wi-Fi applications
  • Embedded systems education

Topics

ESP32-S2
Olimex
Schematic
CH340T
BL4054B
WS2812S
MCP1700T
LiPo Charger
ESP32-S2-WROVER
USB-OTG
IoT Development

Referenced Parts

ESP32-S2-WROOM

Espressif

ESP32-S2-WROVER & ESP32-S2-WROOM Espressif MODULEs

ESP32-S2-WROVER

Espressif

ESP32-S2-WROVER & Espressif MODULEs

BL4054B-42TPRN

Shanghai Belling

U1 BL4054B-42TPRN(SOT23-5)

CH340T

WCH

U2 CH340T(SSOP20W)

WPM2015-3/TR

Will Semiconductor

FET1 WPM2015-3/TR

WS2812S

Worldsemi

RGB-LED1 WS2812S(5X5MM)

SY6280AAC

Silergy

U3 NA(SY6280AAC(SOT23-5))

DW02S

Fortune Semiconductor

BAT1 DW02S

ESP32-S2-DevKit-Lipo Rev B1 Schematic | Design Resources