Esp ev switch
About the Esp ev switch PCB
Esp ev switch is an open source ESP32 PCB design by valletw, published on GitHub under the MIT license. It is a 4-layer board measuring 99.9 × 58.4 mm, with 78 components from 39 distinct parts.
Its main chip is the ESP32-C3-WROOM-02U, from the ESP32 family. Other key parts include the AMS1117-3.3, USBLC6-2P6 and BL0942. By type, the board carries 26 resistors, 21 capacitors, 9 diodes, 4 ICs, 4 connectors and 3 transistors.
It belongs with the iot & wireless designs in this gallery.
From the project
ESP32 EVSE Controller
The purpose of this project is to control a EVSE (Electric Vehicle Supply Equipment), aka. "wall-box", to charge an electric vehicle. It will open/close the Proximity Pilot (PP), the Control Pilot (CP) and the AC coil for the main power. This project will not managed the EV protocol and be integrated only as a switch between the vehicle and the EVSE. The control will be done with Home Assistant by using ESPHome firmware.
Main components on the Esp ev switch
Esp ev switch bill of materials (BOM)
78 components, 39 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AMS1117-3.3 Advanced Monolithic Systems | SOT-223-3_TabPin2 | U101 |
| 1 | USBLC6-2P6 STMicroeletronics | SOT-666 | U102 |
| 1 | ESP32-C3-WROOM-02U Espressif Systems | ESP32-C3-WROOM-02U | U103 |
| 1 | BL0942 Belling | SSOP-10_3.9x4.9mm_P1.00mm | U201 |
| 3 | SS8050 Jiangsu Changjing Electronics Technology Co., Ltd. | SOT-23 | Q201, Q202, Q203 |
| 1 | SCREW_TERMINAL_01X08 Screw_Terminal_01x08 WAGO | TerminalBlock_WAGO_236-408_1x08_P5.00mm_45Degree | J101 |
| 1 | AUDIOJACK3 AudioJack3 SHOU HAN | Jack_3.5mm_PJ320D_Horizontal | J102 |
| 1 | GT-USB-7010ASV G-Switch | USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J103 |
| 1 | CONN_ARM_JTAG_SWD_10 Conn_ARM_JTAG_SWD_10 hanxia | PinHeader_2x05_P1.27mm_Vertical_SMD | J104 |
| 1 | C142924 5x20 250mA Littelfuse | Littelfuse_05200101Z | F101 |
| 1 | G5Q-14 Omron Electronics | Relay_SPDT_Omron-G5Q-1 | K201 |
| 2 | G5V-1 Omron Electronics | Relay_SPDT_Omron_G5V-1 | K202, K203 |
| 1 | IRM-10-5 MW(MEAN WELL Enterprises) | Converter_ACDC_MeanWell_IRM-10-xx_THT | PS101 |
| 2 | 275VAC RUILON(Shenzhen Ruilongyuan Elec) | RV_Disc_D12mm_W5.4mm_P7.5mm | RV101, RV201 |
| 2 | TS-1187A-B-A-B XKB Connectivity | SW_Push_1P1T_XKB_TS-1187A | SW101, SW102 |
| 1 | ZMPT107-1 ZHE MING LANG XI | XFMR-TH_ZMPT107-1 | TR201 |
| 2 | C84256 Red Foshan NationStar Optoelectronics | LED_0805_2012Metric | D101, D106 |
| 1 | C2297 Green Hubei KENTO Elec | LED_0805_2012Metric | D102 |
| 1 | SMF5.0A hongjiacheng | D_SOD-123F | D103 |
| 2 | TPD1E05U06 Texas Instruments | Texas_DPY0002A_0.6x1mm_P0.65mm | D104, D105 |
Show 19 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1N4007 hongjiacheng | D_SOD-123F | D201 |
| 2 | 1N4148W hongjiacheng | D_SOD-123 | D202, D204 |
| 1 | C14709 Ferrite Bead Murata Electronics | L_0603_1608Metric | L101 |
| 3 | 100N 100n Samsung Electro-Mechanics | C_0402_1005Metric | C101, C102, C108 |
| 5 | 10U 10u | CP_EIA-3216-18_Kemet-A | C103, C105, C201, C204, C208 |
| 6 | 100N 100n YAGEO | C_0603_1608Metric | C104, C106, C202, C205, C206, C209 |
| 2 | 10U 10u Samsung Electro-Mechanics | C_0603_1608Metric | C107, C109 |
| 2 | ~ | C_0402_1005Metric | C110, C111 |
| 3 | 33N 33n Samsung Electro-Mechanics | C_0603_1608Metric | C203, C207, C210 |
| 3 | 1.2K 1.2k UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R101, R102, R110 |
| 3 | 10K 10k UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R103, R106, R107 |
| 2 | 5.1K 5.1k UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R104, R105 |
| 2 | 22 UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R108, R109 |
| 1 | 1 UNI-ROYAL(Uniroyal Elec) | R_0603_1608Metric | R201 |
| 3 | 1k UNI-ROYAL(Uniroyal Elec) | R_0603_1608Metric | R202, R204, R213 |
| 3 | 330 UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R203, R209, R215 |
| 3 | 100K 100k UNI-ROYAL(Uniroyal Elec) | R_0402_1005Metric | R205, R210, R216 |
| 5 | 47K 47k UNI-ROYAL(Uniroyal Elec) | R_0805_2012Metric | R206, R207, R208, R211, R212 |
| 1 | 56 UNI-ROYAL(Uniroyal Elec) | R_0603_1608Metric | R214 |
Esp ev switch design files
The KiCad project lives in the valletw/esp-ev-switch repository on GitHub; these links point at the commit this page was built from.
Esp ev switch: common questions
What microcontroller does the Esp ev switch use?
The Esp ev switch is built around the ESP32-C3-WROOM-02U, from the ESP32 family.
How big is the Esp ev switch PCB?
The Esp ev switch measures 99.9 × 58.4 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the Esp ev switch?
78 components, from 39 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Esp ev switch design files?
From the valletw/esp-ev-switch repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Esp ev switch design in my own project?
Yes, under the terms of its MIT license, which valletw chose for the repository.
Can I test firmware for the Esp ev switch without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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