4 layers21 × 51 mm
Easyduino RP2040
Hanqaqa/Easyduino
Easily dive into different PCB KiCad designs of the most popular microcontroller devboards
65 parts755CERN-OHL-P-2.0
4 layers28.4 × 47.9 mm
Easyduino ESP32
Hanqaqa/Easyduino755Easily dive into different PCB KiCad designs of the most popular microcontroller devboards
- Size
- 28.4 × 47.9 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 73
- Pads
- 201
- Tracks, vias
- 372, 64
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 Apr 2026
- Updated
- 28 Jun 2026
Overview
Easyduino ESP32 is an open-source printed circuit board by Hanqaqa, from the Hanqaqa/Easyduino repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board of 28.4 × 47.9 mm with 29 parts on 73 nets, routed with 372 tracks and 64 vias.
It is built around the ESP32-DEVKITC-VE, AMS1117-3.3 and SS8050, with the SP0503BAHTG among its other parts. Its parts include 10 capacitors, 8 resistors, 4 ICs, 2 diodes and 2 transistors. It belongs with the microcontroller boards boards and the ESP32, RP2040 and STM32 boards of this library.
Main components
4
ESP32-DEVKITC-VE
-- WiFi Modules ROHSEspressif SystemsWiFi 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
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)
SP0503BAHTG
SOT-143-55℃~+125℃ 10A@8/20us 14V 150W@8/20us 30pF、60pF 5.5V 6V 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
ESP32/readme.mdESP32
The most popular WiFi Microcontroller
Schematic
KiCad Schematic symbols, footprints and 3D Models were obtained from their KiCad Github repository
Gerbers
Specs
- Input Voltage: 5V-15V(External Source 5V Pin) 5V (USB) or 3.3V (3.3V Pin). ONLY USE ONE VOLTAGE INPUT AT A TIME
- Output Current at 3.3V : 1 A (External Source) 500mA (USB)
- No Polarity Protection (External Source)
- Overcurrent Protection: None
References
ESP32 WROOM 32E
Decoupling capacitors
- ESP32 Wroom 32 E datasheet p24 -> 3.3V pin needs one 22uF and one 100nF capacitors
Enable pin (EN)
- ESP32 Devkit sch -> EN pin 10k resistor and 100nF capacitor
Thermal Pad
- ESP32 Wroom 32 E datasheet p26 -> GND Thermal needs vias between pads. Needed vias are too small for my manufacturer. I will use bigger vias
Automatic Bootloader
- ESP32 Devkit sch -> Automatic Bootloader.
USB-C
Filtering
- USB Hardware Design Guidelines for FTDI ICs p8 -> 10nF Cap + Ferrite Bead + 100nF Cap + 4.7uF Cap
- I disregarded such heavy filtering for the easier to implement 1uF and 100nF cap given in the CP2102 datasheet
- I added a polyfuse with Ihold=500mA and Itrip=1A.
Differential Pair
- USB needs 90 Ohm differential traces.
- According to JLCPCB impedance calculator, with a JLC7628 prepreg and 6mil (0.15mm) space between lines
- I have to use 9 mil tracks -> 0.2 mm
- I will use a very short trace for D+ D- (around 2mm)
- I have to place vias because of the pinout of USB C and CP2102. Some other people have done it with no problems
CP2102
- CP2102 datasheet p15 -> VBUS will be tied to REGIN. 1uF and 100 nF will be added.
- CP2102 datasheet p15 -> ESD Supression Diode for all three inputs of USB
- CP2102 datasheet p15 and p19 -> 100nF for VDD output, 4.7 uF is optional for higher current circuits.
- CP2102 datasheet p23 -> The VDD or 3.3 output can only provide 100mA. I will not use this as a voltage provider for the ciruit. I will use the AMS1117-3.3
- CP2102 datasheet p15 -> RST pulled up via 4.7k and SUSPEND~ pulled down via 10k.
AMS1117-3.3V
- AMS1117 Datasheet p1 -> 3.3V/1A Output with 5-15V Input
- AMS1117 Datasheet p4 -> 22uF tantalum capacitor on input and output.
KiCad Render
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C6, C9, C10 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R4, R5, R7 |
| 3 | 22u | Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I | C5, C7, C8 |
| 3 | 5.1k | Resistor_SMD:R_0402_1005Metric | R2, R3, R8 |
| 2 | SS8050 | Package_TO_SOT_SMD:SOT-23W | Q1, Q2 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 1u | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 2k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | CP2102N-Axx-xQFN28 | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U1 |
| 1 | ESP32-DevKitC | Espressif:ESP32-DevKitC | U4 |
| 1 | ESP32-WROOM-E | Espressif:ESP32-WROOM-32E | U2 |
| 1 | LED | LED_SMD:LED_0402_1005Metric | D2 |
| 1 | SP0503BAHT | Package_TO_SOT_SMD:SOT-143 | D1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1 |
Questions
How big is the Easyduino ESP32 PCB?
It measures 28.4 × 47.9 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Easyduino ESP32 use?
29 parts, built around the ESP32-DEVKITC-VE, AMS1117-3.3, SS8050 and SP0503BAHTG. 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 Easyduino ESP32 KiCad files?
From the Hanqaqa/Easyduino repository on GitHub, at the commit this page was made from: the board is ESP32/Easyduino_ESP32.kicad_pcb and its schematic Atmega328p Arduino Nano/Easyduino_Atmega_Nano.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Easyduino ESP32 design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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