2 layers105 × 58 mm
ZAP-010A
lalithk06/Esp32_Smart_Plug
Hardware reference design for an ESP32-S3 smart plug with mains power conversion, relay switching, RTC support, USB connectivity, and protection components.
80 parts
2 layers164 × 126.7 mm
Energy management
Lalith-8025/PCB_design_SOI_Assignment- Size
- 164 × 126.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 19
- Pads
- 162
- Tracks, vias
- 297, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 31 Mar 2025
- Updated
- 31 Mar 2025
Overview
Energy management is an open-source printed circuit board by Lalith-8025, from the Lalith-8025/PCB_design_SOI_Assignment repository on GitHub. It is a 2-layer board of 164 × 126.7 mm with 17 parts on 19 nets, routed with 297 tracks and 0 vias.
It is built around the ESP32-WROOM-32, HLK-5M05 and AMS1117-3.3, with the DS3231MZ+ and BC547 among its other parts. Its parts include 4 ICs, 3 capacitors, 3 resistors, 1 diode and 1 transistor. It belongs with the ESP32 boards of this library.
Main components
5
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
HLK-5M05
DIP,38x23mm0.1W 18mm 1A 23mm 38mm 3kV 50mVp-p 5V 5W 70% 70V~350V 85VAC~264VAC AC/DC-DC Short Circuit Protection、Over Current Protection ±0.2% DIP,38x23mm AC-DC Power Modules ROHSHI-LINKAC-DC Power Modules
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
DS3231MZ+
SOIC-8-40℃~+85℃ 2.3V~5.5V I2C Temperature compensation、Backup power management and battery charging、Alarm function、Periodic interrupt output SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
BC547
TO-92Bipolar (BJT)Jiangsu Changjing Electronics Technology (CJ)
Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100Kohms | Resistor_SMD:R_4020_10251Metric_Pad1.65x5.30mm_HandSolder | R1, R2 |
| 2 | 10nuF | Capacitor_SMD:CP_Elec_4x4.5 | C2, C3 |
| 1 | 100nF | Capacitor_SMD:CP_Elec_4x4.5 | C1 |
| 1 | 10Kohms | Resistor_SMD:R_4020_10251Metric_Pad1.65x5.30mm_HandSolder | R3 |
| 1 | 1A | Fuse:Fuseholder_Clip-5x20mm_Littelfuse_100_Inline_P20.50x4.60mm_D1.30mm_Horizontal | F1 |
| 1 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | ACS712xLCTR-20A | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Keystone_3000_1x12mm | BT1 |
| 1 | DS3231M | Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm | U4 |
| 1 | ESP32-WROOM-32 | RF_Module:ESP32-WROOM-32 | U1 |
| 1 | HLK-5M05 | Converter_ACDC:Converter_ACDC_Hi-Link_HLK-5Mxx | PS1 |
| 1 | OLED-128O064D | Display:OLED-128O064D | DS1 |
| 1 | Relay_SPDT | Relay_SMD:Relay_SPDT_AXICOM_HF3Series_50ohms_Pitch1.27mm | K1 |
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Questions
How big is the Energy management PCB?
It measures 164 × 126.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Energy management use?
17 parts, built around the ESP32-WROOM-32, HLK-5M05, AMS1117-3.3 and DS3231MZ+. 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 Energy management KiCad files?
From the Lalith-8025/PCB_design_SOI_Assignment repository on GitHub, at the commit this page was made from: the board is energy_management.kicad_pcb and its schematic energy_management.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Energy management design in my own project?
Its repository states no licence, so its author keeps all rights: ask Lalith-8025 before reusing the design.