2 layers100 × 90.1 mm
4 layers198.1 × 130.8 mm
Smart Home Energy Management System
jsitech4/Projects- Size
- 198.1 × 130.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 141
- Nets
- 140
- Pads
- 515
- Tracks, vias
- 1,879, 348
- Pours
- 57
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Oct 2025
- Updated
- 4 Nov 2026
Overview
Smart Home Energy Management System is an open-source printed circuit board by jsitech4, from the jsitech4/Projects repository on GitHub. It is a 4-layer board of 198.1 × 130.8 mm with 141 parts on 140 nets, routed with 1,879 tracks and 348 vias.
It is built around the CH340C, ESP32-WROOM-32 and LM2596S-12, with the AMS1117-3.3, PCA9555D and SM4001 among its other parts. Its parts include 30 diodes, 27 capacitors, 22 resistors, 17 connectors and 15 switches. It belongs with the home automation and IoT boards and the ESP32 boards of this library.
Main components
10
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
LM2596S-12
TO-263-5L-20℃~+70℃ 1 12V 170kHz 2mA 3A 4.5V~40V Buck Buck Built-in Fixed No TO-263-5L DC-DC Converters ROHSGRDC-DC Converters
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
PCA9555D
SO-24-300milReset function、Cascading and address extension SO-24-300mil I/O Expanders ROHSNXP SemiconductorsI/O Expanders
SM4001
DO-213AB-50℃~+175℃ 1 Independent 1.1V@1A 1A 44A 50V 5uA@50V DO-213AB Diodes - General Purpose ROHSDIOTECDiodes - General Purpose
GBU8M
GBU-55℃~+150℃@(Tj) 1V@4A 1kV 200A 5uA 8A Single-Phase Rectifier GBU Bridge Rectifiers ROHSLeshan Radio (LRC)Bridge Rectifiers
SM4007PL
SOD-123FL-55℃~+150℃ 1.1V@1A 10uA@1kV 1A 1kV 25A Independent SOD-123FL Diodes - General Purpose ROHSMDDDiodes - General Purpose
ULN2803ADWR-HXY
SOP-181.15mA 1.5V 100uA 15pF 500mA 50uA 50uA 8 SOP-18 Darlington Transistor Arrays ROHSHXY MOSFETDarlington Transistor Arrays
UMH3N
SOT-363-55℃~+150℃ 0.5uA 100 100mA 150mW 2 NPN (Pre-Biased) 250MHz 300mV 50V 5V 6.11kΩ NPN SOT-363 Digital Transistors ROHSJiangsu Changjing Electronics Technology (CJ)Digital Transistors
Parts
141| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | SM4001 | PCM_JLCPCB:D_SMA | D5, D6, D10, D11, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29 +1 |
| 12 | 30A RELAY | Relay_THT:Relay_SPDT_RAYEX-L90 | K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, K12, K13 |
| 8 | 100nF | PCM_JLCPCB:C_0805 | C4, C12, C13, C18, C22, C23, C24, C25 |
| 7 | 10k | PCM_JLCPCB:R_0805 | R10, R12, R15, R16, R17, R21, R22 |
| 5 | 330R | PCM_JLCPCB:R_0805 | R6, R9, R11, R19, R20 |
| 4 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP4, TP7, TP8, TP14 |
| 3 | 10uF_16V | PCM_JLCPCB:C_CASE-B-3528-21(mm) | C16, C26, C27 |
| 3 | 1N5824 | PCM_JLCPCB:D_SMA | D2, D3, D12 |
| 3 | 220uF_16V | Capacitor_SMD:CP_Elec_6.3x7.7 | C5, C6, C11 |
| 3 | 33uH | Inductor_SMD:L_12x12mm_H6mm | L1, L2, L3 |
| 3 | 6.8k | PCM_JLCPCB:R_0805 | R4, R5, R8 |
| 3 | 680k | PCM_JLCPCB:R_0805 | R1, R2, R7 |
| 3 | 680uF_35V | Capacitor_SMD:CP_Elec_10x12.5 | C1, C2, C7 |
| 2 | 1N5819 | PCM_JLCPCB:D_SMA | D13, D14 |
| 2 | 2200uF/35V | Capacitor_THT:CP_Radial_D18.0mm_P7.50mm | C9, C10 |
| 2 | 22pF | PCM_JLCPCB:C_0805 | C20, C21 |
| 2 | GBU8M | Diode_THT:Diode_Bridge_Vishay_GBU | D8, D9 |
| 2 | PC817XFP | PCM_JLCPCB:SOP-4_4.4x2.6mm_P1.27mm | OC1, OC2 |
| 2 | SM4007PL | PCM_JLCPCB:D_SMA | D15, D30 |
| 2 | ULN2803ADWR | digikey-footprints:SOIC-18_W7.5mm | Q3, Q4 |
| 2 | UMH3N | PCM_JLCPCB:SOT-363_SC-70-6 | Q1, Q2 |
| 2 | ~ | Jumper:SolderJumper-3_P1.3mm_Open_Pad1.0x1.5mm | JP1, JP2 |
| 1 | 0.1uF/25V | PCM_JLCPCB:C_0805 | C17 |
| 1 | 100k | PCM_JLCPCB:R_0805 | R3 |
| 1 | 10A RELAY | Relay_THT:Relay_SPDT_Finder_36.11 | K1 |
| 1 | 10K | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV1 |
| 1 | 12MHz | PCM_JLCPCB:CRYSTAL-SMD_L11.5-W4.8-LS12.7 | Y1 |
| 1 | 145J400V | Capacitor_THT:C_Rect_L19.0mm_W6.0mm_P15.00mm_MKS4 | C8 |
| 1 | 150R | PCM_JLCPCB:R_0805 | R18 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R13 |
| 1 | 330R/2W | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P20.32mm_Horizontal | R14 |
| 1 | 4.7uF/16V | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C19 |
| 1 | 4.7uF/16V | PCM_JLCPCB:C_CASE-B-3528-21(mm) | C15 |
| 1 | 470nF | PCM_JLCPCB:C_0805 | C3 |
| 1 | 470uF/25V | Capacitor_SMD:CP_Elec_8x11.9 | C14 |
| 1 | AMS1117-3.3 | PCM_JLCPCB:SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR | U5 |
| 1 | Blue | LED_THT:LED_D3.0mm | D1 |
| 1 | CH340C | PCM_JLCPCB:SOIC-16_3.9x9.9mm_P1.27mm | U7 |
| 1 | CMZ12 | PCM_JLCPCB:D_SOD-123 | DZ1 |
| 1 | CT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | DISPLAY | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J19 |
| 1 | ESP32-WROOM | RF_Module:ESP32-WROOM-32E | U3 |
| 1 | FLASH | PCM_JLCPCB:SW_TS-1088-AR02016 | SW2 |
| 1 | GREEN | LED_THT:LED_D3.0mm | D4 |
| 1 | Green | LED_THT:LED_D3.0mm | D17 |
| 1 | INVERTER | TestPoint:TestPoint_Plated_Hole_D5.0mm | J2 |
| 1 | LM2596S-12 | PCM_JLCPCB:TO-263-5_L10.2-W8.9-P1.70-TL | U2 |
| 1 | LM2596S-3.3V | PCM_JLCPCB:TO-263-5_L10.2-W8.9-P1.70-TL | U1 |
| 1 | LM2596S-5V | PCM_JLCPCB:TO-263-5_L10.2-W8.9-P1.70-TL | U4 |
| 1 | LOAD 1 | TestPoint:TestPoint_Plated_Hole_D5.0mm | J25 |
| 1 | LOAD 2 | TestPoint:TestPoint_Plated_Hole_D5.0mm | J24 |
| 1 | LOAD 3 | TestPoint:TestPoint_Plated_Hole_D5.0mm | J23 |
| 1 | LOAD 4 | TestPoint:TestPoint_Plated_Hole_D5.0mm | J22 |
| 1 | LOAD 5 | TestPoint:TestPoint_Plated_Hole_D5.0mm | J21 |
| 1 | LOAD 6 | TestPoint:TestPoint_Plated_Hole_D5.0mm | J20 |
| 1 | N | TestPoint:TestPoint_Plated_Hole_D5.0mm | J10 |
| 1 | NEPA | TestPoint:TestPoint_Plated_Hole_D5.0mm | J1 |
| 1 | PCA9555D | Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm | U6 |
| 1 | PZEM_LOAD | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-04P_1x04_P5.00mm | J6 |
| 1 | PZEM_SIG | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J11 |
| 1 | RESET | PCM_JLCPCB:SW_TS-1088-AR02016 | SW1 |
| 1 | Red | LED_THT:LED_D3.0mm | D16 |
| 1 | TRANS 1-OUT | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J15 |
| 1 | TRANS 2-OUT | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J18 |
| 1 | TRANS-IN | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J17 |
| 1 | USB_C Conn | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J14 |
| 1 | ~ | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP3 |
The 137 most common of 141 parts.
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Questions
How big is the Smart Home Energy Management System PCB?
It measures 198.1 × 130.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Smart Home Energy Management System use?
141 parts, built around the CH340C, ESP32-WROOM-32, LM2596S-12 and AMS1117-3.3. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Smart Home Energy Management System KiCad files?
From the jsitech4/Projects repository on GitHub, at the commit this page was made from: the board is ESP32/Smart_Home_Energy_Management_System/hardware/Smart_Home_Energy_Management_System.kicad_pcb and its schematic ESP32/Dual_Axis_Solar_Tracker/hardware/Dual_Axis_Solar_Tracker.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Smart Home Energy Management System design in my own project?
Its repository states no licence, so its author keeps all rights: ask jsitech4 before reusing the design.