Olimex ESP32-DevKit-Lipo Schematic (Rev A1)
Schematic for the Olimex ESP32-DevKit-Lipo development board featuring the ESP-WROOM-32 module, integrated LiPo charging, and USB-UART bridge.
Overview
A detailed hardware schematic for the Olimex ESP32-DevKit-Lipo development board, Revision A1. The design is based on the Espressif Systems ESP-WROOM-32 module and includes a complete power management system featuring a Silergy SY8089AAAC step-down converter and a Shanghai Belling BL4054B-42TPRN LiPo battery charger. Connectivity and programming are handled via a WCH CH340T USB-to-UART bridge and a micro USB connector. The board features auto-program circuitry using Nexperia BC817-40 transistors, battery protection, dual 19-pin expansion headers for GPIO access, and status LEDs for power and charging states.
Use Cases
- IoT device prototyping
- Battery-powered ESP32 applications
- Embedded systems hardware reference
- Firmware development for ESP-WROOM-32
- Portable electronics power management design
Topics
Referenced Parts
ESP-WROOM-32
Espressif Systems
U5 ESP-WROOM-32
BAT54C
Diodes Incorporated
U4 BAT54C(SOT23-3)
IT-1185AU2-160G-G-TR
HRO
RST1 IT-1185AU2-160G-G-TR
BL4054B-42TPRN
Shanghai Belling
U1 BL4054B-42TPRN(SOT23-5)
SY8089AAAC
Silergy
U3 SY8089AAAC(SOT23-5)
CH340T
WCH
U2 CH340T(SSOP20W)
WPM2015-3/TR
Willsemi
FET1 WPM2015-3/TR
MISB-SWMM-5B-LF
Morethanall
USB-UART1 MISB-SWMM-5B-LF(USB_MICRO)
DW02S
Fortune Semiconductor
BAT1 DW02S
| BC817-40 | Nexperia | BC817-40(SOT23) |
| SS34 | Onsemi | 1N5822/SS34/SMA |
| ESP-WROOM-32 | Espressif Systems | U5 ESP-WROOM-32 |
| BAT54C | Diodes Incorporated | U4 BAT54C(SOT23-3) |
| IT-1185AU2-160G-G-TR | HRO | RST1 IT-1185AU2-160G-G-TR |
| BL4054B-42TPRN | Shanghai Belling | U1 BL4054B-42TPRN(SOT23-5) |
| SY8089AAAC | Silergy | U3 SY8089AAAC(SOT23-5) |
| CH340T | WCH | U2 CH340T(SSOP20W) |
| WPM2015-3/TR | Willsemi | FET1 WPM2015-3/TR |
| MISB-SWMM-5B-LF | Morethanall | USB-UART1 MISB-SWMM-5B-LF(USB_MICRO) |
| DW02S | Fortune Semiconductor | BAT1 DW02S |