4 layers68.1 × 75 mm
4 layers55.9 × 78.7 mm
ESP32 BUCK WLED NO BOARD
lepetidozo/wledController_V1I wanted to make a custom WLED controller for my bedroom's ledstrip and to learn more about electronics and PCB design
- Size
- 55.9 × 78.7 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 54
- Pads
- 170
- Tracks, vias
- 144, 42
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Jul 2026
- Updated
- 14 Oct 2026
Overview
ESP32 BUCK WLED NO BOARD is an open-source printed circuit board by lepetidozo, from the lepetidozo/wledController_V1 repository on GitHub. It is a 4-layer board of 55.9 × 78.7 mm with 40 parts on 54 nets, routed with 144 tracks and 42 vias.
It is built around the 74AHCT125D, ESP32-WROOM-32E and LM2596T-ADJ, with the AMS1117-3.3, SS8050 and 0.1UF 50V 5*11 among its other parts. Its parts include 11 capacitors, 10 resistors, 4 ICs, 4 connectors and 2 diodes. It belongs with the power boards and the ESP32 boards of this library.
Main components
6
74AHCT125D
SOP-14-40℃~+125℃ 1 4 4.3ns@5V,50pF 4.5V~5.5V 40uA 74AHCT 8mA 8mA Schmitt trigger Tri-State Unidirectional SOP-14 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver
ESP32-WROOM-32E
SMD,18x25.5mmSMD,18x25.5mm WiFi Modules ROHSEspressif SystemsWiFi Modules
LM2596T-ADJ
TO-220-5-40℃~+125℃ 1 150kHz 3A 5V~40V 5mA Adjustable Buck Buck Built-in No TO-220-5 DC-DC Converters ROHSHGSEMIDC-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
SS8050
SOT-323-55℃~+150℃ 1 NPN 1.5A 100MHz 100nA 200 25V 300mW 500mV 5V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)0.1UF 50V 5*11
插件,5x11mm1000hrs@105℃ 100nF 11mm 1A@100kHz 2mm 50V 5mm 插件,5x11mm Aluminum Electrolytic Capacitors - Leaded ROHSCXAluminum Electrolytic Capacitors - Leaded
Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C7, C8, C9, C10 |
| 4 | 330R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R12, R13, R14 |
| 3 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6, R7, R9 |
| 3 | 47uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3, C4, C5 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP3, TP5 |
| 2 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5 |
| 2 | SS8050 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW2, SW3 |
| 1 | 0.1uF(50V) | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C15 |
| 1 | 100uF(50V) | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C14 |
| 1 | 1N5822 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 3K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17 |
| 1 | 470uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C1 |
| 1 | 68uH | Inductor_SMD_Wurth:L_Wurth_WE-LQSH-4020 | L1 |
| 1 | 74AHCT125 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U5 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | BOARD_ALIMENTATION | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J3 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J6 |
| 1 | ESP32-WROOM-32E | RF_Module:ESP32-WROOM-32E | U3 |
| 1 | ESP_FLASH_PIN | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J5 |
| 1 | LEDSTRIPS_DATA_ALIMENTATIION | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-06P_1x06_P5.00mm | J2 |
| 1 | LM2596T-ADJ | Package_TO_SOT_SMD:TO-263-5_TabPin3 | U1 |
| 1 | RED LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | TestPoint | TestPoint:TestPoint_Loop_D3.80mm_Drill2.5mm | TP2 |
Questions
How big is the ESP32 BUCK WLED NO BOARD PCB?
It measures 55.9 × 78.7 mm and has 4 copper layers, 1.6 mm thick.
What parts does the ESP32 BUCK WLED NO BOARD use?
40 parts, built around the 74AHCT125D, ESP32-WROOM-32E, LM2596T-ADJ 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 ESP32 BUCK WLED NO BOARD KiCad files?
From the lepetidozo/wledController_V1 repository on GitHub, at the commit this page was made from: the board is ESP32_BUCK_WLED_NO_BOARD.kicad_pcb and its schematic ESP32_BUCK_WLED_NO_BOARD.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ESP32 BUCK WLED NO BOARD design in my own project?
Its repository states no licence, so its author keeps all rights: ask lepetidozo before reusing the design.
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