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 layers25.9 × 63.9 mm
Easyduino ESP32S3
Hanqaqa/Easyduino755Easily dive into different PCB KiCad designs of the most popular microcontroller devboards
- Size
- 25.9 × 63.9 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 77
- Pads
- 239
- Tracks, vias
- 703, 137
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 Apr 2026
- Updated
- 28 Jun 2026
Overview
Easyduino ESP32S3 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 25.9 × 63.9 mm with 35 parts on 77 nets, routed with 703 tracks and 137 vias.
It is built around the ESP32-S3-DEVKITC-1-N8, ESP32-S3-WROOM-1-N8 and AMS1117-3.3. Its parts include 11 resistors, 10 capacitors, 4 ICs, 4 diodes and 2 transistors. It belongs with the microcontroller boards boards and the ESP32, RP2040 and STM32 boards of this library.
Main components
3
ESP32-S3-DEVKITC-1-N8
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm 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
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
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C4, C5, C8, C9 |
| 6 | 5.1k | Resistor_SMD:R_0402_1005Metric | R2, R3, R6, R7, R8, R11 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R4, R5, R10 |
| 3 | 22u | Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I | C6, C7, C10 |
| 2 | D_Schottky | Diode_SMD:D_0402_1005Metric | D2, D3 |
| 2 | LED | LED_SMD:LED_0402_1005Metric | D1, D4 |
| 2 | Q_NPN_BCE | Package_TO_SOT_SMD:SOT-23W | Q1, Q2 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 2 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1, J2 |
| 1 | 1u | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 2.4k | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | CP2102N-Axx-xQFN28 | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U3 |
| 1 | ESP32-S3-DevKitC | Espressif:ESP32-S3-DevKitC | U2 |
| 1 | ESP32-S3-WROOM-1 | Espressif:ESP32-S3-WROOM-1 | U1 |
Questions
How big is the Easyduino ESP32S3 PCB?
It measures 25.9 × 63.9 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Easyduino ESP32S3 use?
35 parts, built around the ESP32-S3-DEVKITC-1-N8, ESP32-S3-WROOM-1-N8 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 Easyduino ESP32S3 KiCad files?
From the Hanqaqa/Easyduino repository on GitHub, at the commit this page was made from: the board is ESP32S3/Easyduino_ESP32S3.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 ESP32S3 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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