2 layers39.3 × 55 mm
4 layers88 × 55.8 mm
Tutorial03-ESP32-IoT-4-layer PCB
D76X/KiCadKiCad Projects
- Size
- 88 × 55.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 94
- Nets
- 78
- Pads
- 339
- Tracks, vias
- 840, 155
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Oct 2025
- Updated
- 3 Oct 2026
Overview
Tutorial03-ESP32-IoT-4-layer PCB is an open-source printed circuit board by D76X, from the D76X/KiCad repository on GitHub. It is a 4-layer board of 88 × 55.8 mm with 94 parts on 78 nets, routed with 840 tracks and 155 vias.
It is built around the ESP32-C3-WROOM-02-H4, MCP73871EV and BME280, with the MAX4466EXK+T, W25Q32JVSSIQ and GSD090012SEU among its other parts. Its parts include 35 resistors, 22 capacitors, 7 ICs, 6 diodes and 5 connectors. It belongs with the home automation and IoT boards and the ESP32 and RISC-V boards of this library.
Main components
12
ESP32-C3-WROOM-02-H4
SMD,20x18mm-105dBm -40℃~+105℃ 2.4GHz 20.5dBm 345mA 3V~3.6V 82mA Bluetooth5.0 ESP32-C3 On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,20x18mm WiFi Modules ROHSEspressif SystemsWiFi ModulesMCP73871EV
-ModulesMicrochip Technology
BME280
LGA-8(2.5x2.5)-40℃~+85℃ 0%RH~100%RH 1.71V~3.6V 1.8uA 16bit I2C、SPI ±0.5℃ ±3%RH LGA-8(2.5x2.5) Temperature and Humidity Sensor ROHSBoschTemperature And Humidity Sensor
MAX4466EXK+T
SC-70-5-40℃~+85℃ 0.03% 1-Channel 112dB 2.4V~5.5V 24A SC-70-5 Audio Amplifiers ROHSMaxim Integrated (Analog Devices)Audio Amplifiers
W25Q32JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 133MHz 1uA 2.7V~3.6V 20 Years 32Mbit 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASHGSD090012SEU
-2.95mm Connector and Ejector MicroSD Card (TF Card) Push-Pull With Locating Pins Yes - SD Card / Memory Card Connector ROHSAmphenolSD Card / Memory Card Connector
TEMT6000X01
1206-40℃~+100℃ 1.05mm 2mm 3nA 4mm Light Intensity 1206 Ambient Light Sensors ROHSVishay IntertechnologyAmbient Light Sensors
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
LTST-C170KRKT
0805-55℃~+85℃ 130° 20mA 2V 54mcd 631nm 639nm 75mW Discrete Diode Red Water Clear 0805 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
BC817
SOT-231 NPN 100nA 150MHz 300mW 40 45V 500mA 5V 700mV NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)LTST-C170GKT
0805-55℃~+85℃ 100mW 130° 2.1V 20mA 565nm 569nm 6mcd Discrete Diode Water Clear Yellow Green 0805 LED Indication - Discrete ROHSLite-OnLED Indication - DiscreteUSLPT2819DT2TR
-- Tactile Switch/Push Button Switch ROHSTE ConnectivityTact Switchs,Keypad Switches
README
Projects/Tutorial03-ESP32-IoT-4-layer-PCB/README.mdKiCad
LED6 footprint: Project-Footprints:LEDC2012X120N
Parts
94| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 0.1u | Capacitor_SMD:C_0805_2012Metric | C1, C2, C5, C8, C10, C13, C14, C15, C16, C17, C18, C19, C20 |
| 10 | 10K | Resistor_SMD:R_0805_2012Metric | R1, R2, R19, R23, R27, R29, R30, R32, R33, R34 |
| 6 | 470 | Resistor_SMD:R_0805_2012Metric | R7, R8, R9, R10, R16, R18 |
| 5 | 4K7 | Resistor_SMD:R_0805_2012Metric | R17, R21, R24, R25, R35 |
| 4 | 10u | Project-Footprints:T491A | C3, C4, C7, C12 |
| 4 | 50 | Resistor_SMD:R_0805_2012Metric | R14, R15, R20, R22 |
| 3 | 1u | Capacitor_SMD:C_0805_2012Metric | C6, C11, C21 |
| 3 | 2K | Resistor_SMD:R_0805_2012Metric | R5, R26, R28 |
| 3 | LTST-C170KRKT | Project-Footprints:LEDC2012X120N | LED1R1, LED2R1, LED6R1 |
| 3 | MountingHole_2.5mm | MountingHole:MountingHole_2.5mm | 2.5, 2.5, 2.5 |
| 2 | 5K1 | Resistor_SMD:R_0805_2012Metric | R3, R4 |
| 2 | BC817 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3 |
| 2 | LTST-C170GKT | Project-Footprints:LEDC2012X120N | LED2G1, LED5G1 |
| 2 | USLPT2819DT2TR | Project-Footprints:SW_USLPT2819DT2TR | S1, S2 |
| 1 | 0ZCH0110AF2E | Project-Footprints:FUSC3226X100N | F1 |
| 1 | 100K | Resistor_SMD:R_0805_2012Metric | R31 |
| 1 | 10n | Capacitor_SMD:C_0805_2012Metric | C22 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R11 |
| 1 | 20K | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 22K1 | Resistor_SMD:R_0805_2012Metric | R12 |
| 1 | 4.7u | Project-Footprints:T491A | C9 |
| 1 | 47K5 | Resistor_SMD:R_0805_2012Metric | R13 |
| 1 | B2B-PH-SM4-TB | Project-Footprints:JST_B2B-PH-SM4-TB | J2 |
| 1 | BME280 | Project-Footprints:PSON65P250X250X100-8N | U7 |
| 1 | CMC-5042PF-AC | Project-Footprints:CUI_CMC-5042PF-AC | MK1 |
| 1 | CP2102N-Axx-xQFN20 | Project-Footprints:QFN-20_L3.0-W3.0-P0.50-BL-EP1.7_EFM8BB21F16G | U4 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J5 |
| 1 | ESP32-C3-WROOM-02-H4 | Project-Footprints:MODULE_ESP32-C3-WROOM-02-H4 | U3 |
| 1 | GSD090012SEU | Project-Footprints:AMPHENOL_GSD090012SEU | J3 |
| 1 | LM1117MPX-3.3 | Project-Footprints:VREG_LM1117MPX-3.3 | VR1 |
| 1 | LTST-C170TBKT | Project-Footprints:LEDC2012X120N | LED3B1 |
| 1 | MAX4466EXK | Project-Footprints:SOT65P210X110-5N | U2 |
| 1 | MCP73871 | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U1 |
| 1 | SS-52400-002 | Project-Footprints:BELFUSE_SS-52400-002 | J1 |
| 1 | TEMT6000X01 | Project-Footprints:TRANS_TEMT6000X01 | Q1 |
| 1 | Test CS | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | Test CS_SD | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | Test MISO_DI | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | Test MISO_DO | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | Test SCKL | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | W25Q32JVSSIQ | Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U6 |
The 91 most common of 94 parts.
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Questions
How big is the Tutorial03-ESP32-IoT-4-layer PCB PCB?
It measures 88 × 55.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Tutorial03-ESP32-IoT-4-layer PCB use?
94 parts, built around the ESP32-C3-WROOM-02-H4, MCP73871EV, BME280 and MAX4466EXK+T. 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 Tutorial03-ESP32-IoT-4-layer PCB KiCad files?
From the D76X/KiCad repository on GitHub, at the commit this page was made from: the board is Projects/Tutorial03-ESP32-IoT-4-layer-PCB/Tutorial03-ESP32-IoT-4-layer-PCB.kicad_pcb and its schematic Projects/KLP-5e-ESP32-sensor-board-01/KiCad project/ESP32 sensor board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tutorial03-ESP32-IoT-4-layer PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask D76X before reusing the design.