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Olimex ESP32-DevKit-LiPo Revision D Schematic

Schematic for Olimex ESP32-DevKit-LiPo development board, featuring the ESP32-WROOM-32D module, CH340X USB-UART bridge, and integrated LiPo battery charging.

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Overview

This hardware design document provides the complete schematic for the Olimex ESP32-DevKit-LiPo (Revision D). The board is built around the Espressif Systems ESP32-WROOM-32D-4MB module. Key integrated circuits include a WCH CH340X USB-to-UART bridge for programming, a Shanghai Belling BL4054B-42TPRN LiPo battery charger with adjustable charge current, and a Hexin Semiconductor HX6211A332MR 3.3V LDO regulator. The design features a micro-USB interface, a dedicated LiPo battery connector with measurement sensing, and dual 19-pin headers compatible with the ESP32-DevKitC pinout. Protection and switching are managed by Willsemi WPM2015-3 P-MOSFETs and Diodes Inc 1N5819S4 Schottky diodes.

Use Cases

  • Battery-powered IoT application development
  • Prototyping Wi-Fi and Bluetooth LE connected devices
  • Low-power remote sensor node design
  • Portable electronic device prototyping
  • Evaluation of ESP32-WROOM-32D module features

Topics

ESP32-WROOM-32D
CH340X
BL4054B-42TPRN
HX6211A332MR
WPM2015-3
DW02S
ESP32-DevKit-LiPo
Olimex
LiPo Charger
IoT Development Board
Schematic

Referenced Parts

ESP32-WROOM-32D-4MB

Espressif Systems

U5 ESP32-WROOM-32D-4MB

BAT54C

Nexperia

D3 BAT54C(SOT23-3)

BL4054B-42TPRN

Shanghai Belling

U1 BL4054B-42TPRN(SOT23-5)

CH340X

WCH

U2 CH340X(MSOP-10)

1N5819S4

Diodes Incorporated

D1 1N5819S4/SOD123

HX6211A332MR

Hexin Semiconductor

U3 HX6211A332MR

IT-1185AU2-160G-G-TR

Well Buying

RST1 IT-1185AU2-160G-G-TR

WPM2015-3/TR

Willsemi

FET1 WPM2015-3/TR

DW02S

Fortune Semiconductor

BAT1 DW02S

MISB-SWMM-5B-LF

Unknown

USB-UART1 MISB-SWMM-5B-LF(USB_MICRO)

Olimex ESP32-DevKit-LiPo Revision D Schematic | Design Resources