ESP32-EVB Revision L Development Board Schematic
Hardware design for the ESP32-EVB Rev L development board featuring Ethernet, CAN bus, Li-Po charging, and dual relays based on the ESP32-WROOM-32E module.
Overview
This design document provides the hardware details for the Olimex ESP32-EVB Revision L development board. Centered on the Espressif Systems ESP32-WROOM-32E-N4 module, the board integrates a Microchip LAN8710A-EZC for 10/100 Ethernet connectivity and a SIT SIT1050T transceiver for CAN bus communication. Power management is handled by a Texas Instruments TPS62A02ADRLR step-down converter and a TP4054-42-SOT25-R Li-Po battery charger. The board also features two SUNHOLD RAS-0515 relays for power switching, a MicroSD card slot, an infrared receiver and transmitter, and a WCH CH340X USB-to-UART bridge for programming and debugging.
Use Cases
- Industrial IoT gateways
- Smart home automation with relay control
- Ethernet-to-CAN bridge applications
- Battery-powered remote monitoring stations
- Infrared remote control systems
Topics
Referenced Parts
PIM201610-1R0MTS00
Cyntec
L7 1.0uH/4.2A/DCR=35mR/20%/2.00x1.60x1.00mm/L2016(PIM201610-1R0MTS00)
ESP32-WROOM-32E-N4
Espressif Systems
U3 ESP32-WROOM-32E-N4
RAS-0515
SUNHOLD
REL1A RAS-0515 (SUNHOLD)
TPS62A02ADRLR
Texas Instruments
U2 TPS62A02ADRLR(SOT-563-6)
CH340X
WCH
U5 CH340X(MSOP-10)
1N5819S4
Generic
D17 1N5819S4(SOD-123)
BAT54A
Generic
D10 BAT54A(SOT23-3)
BAT54C
Generic
U9 BAT54C(SOT23-3)
BSS138
Nexperia
FET4 BSS138
SIT1050T
SIT
U6 SIT1050T(SOIC-8_150mil)
WPM2015-3/TR
Willsemi
FET3 WPM2015-3/TR
SS34
Generic
D4 1N5822/SS34/SMA
VS1838B
Generic
U7 VS1838B
RJLBC-060TC1
Link-PP
LAN1 RJLBC-060TC1(LPJ4013EDNL)
TP4054-42-SOT25-R
Nan Jing Top Power
U1 TP4054-42-SOT25-R
TFC-WXCP11-08-LF
TFC
MICRO_SD1 TFC-WXCP11-08-LF
UPZ2012E-601-2R0TF
Taiyo Yuden
L3 600R/2A/UPZ2012E-601-2R0TF
BH10S
Generic
UEXT1 BH10S(B-D-02x5-LF)
T1107A
Generic
BUT1 T1107A(6x3,8x2,5MM)
HX7027
Holtek
U11 HX7027(SOT-23)
MISB-SWMM-5B-LF
MISB
USB-UART1 MISB-SWMM-5B-LF
| LAN8710A-EZC | Microchip | U4 LAN8710A-EZC(QFN32) |
| ESDS314DBVR | Texas Instruments | TVS1 ESDS314DBVR(SOT-23-5) |
| IR333-A | Everlight | LED3 LED/IR333-A/5mm |
| SMBJ6.0A | Littelfuse | D2 SMBJ6.0A(DO-214AA) |
| BC817-40 | Nexperia | Q9 BC817-40(SOT23) |
| NCP303LSN27T1G | Onsemi | U8 NA(NCP303LSN27T1G(SOT-23-5)) |
| PIM201610-1R0MTS00 | Cyntec | L7 1.0uH/4.2A/DCR=35mR/20%/2.00x1.60x1.00mm/L2016(PIM201610-1R0MTS00) |
| ESP32-WROOM-32E-N4 | Espressif Systems | U3 ESP32-WROOM-32E-N4 |
| RAS-0515 | SUNHOLD | REL1A RAS-0515 (SUNHOLD) |
| TPS62A02ADRLR | Texas Instruments | U2 TPS62A02ADRLR(SOT-563-6) |
| CH340X | WCH | U5 CH340X(MSOP-10) |
| 1N5819S4 | Generic | D17 1N5819S4(SOD-123) |
| BAT54A | Generic | D10 BAT54A(SOT23-3) |
| BAT54C | Generic | U9 BAT54C(SOT23-3) |
| BSS138 | Nexperia | FET4 BSS138 |
| SIT1050T | SIT | U6 SIT1050T(SOIC-8_150mil) |
| WPM2015-3/TR | Willsemi | FET3 WPM2015-3/TR |
| SS34 | Generic | D4 1N5822/SS34/SMA |
| VS1838B | Generic | U7 VS1838B |
| RJLBC-060TC1 | Link-PP | LAN1 RJLBC-060TC1(LPJ4013EDNL) |
| TP4054-42-SOT25-R | Nan Jing Top Power | U1 TP4054-42-SOT25-R |
| TFC-WXCP11-08-LF | TFC | MICRO_SD1 TFC-WXCP11-08-LF |
| UPZ2012E-601-2R0TF | Taiyo Yuden | L3 600R/2A/UPZ2012E-601-2R0TF |
| BH10S | Generic | UEXT1 BH10S(B-D-02x5-LF) |
| T1107A | Generic | BUT1 T1107A(6x3,8x2,5MM) |
| HX7027 | Holtek | U11 HX7027(SOT-23) |
| MISB-SWMM-5B-LF | MISB | USB-UART1 MISB-SWMM-5B-LF |