4 layers68.8 × 53.6 mm
Easyduino Atmega
Hanqaqa/Easyduino
Easily dive into different PCB KiCad designs of the most popular microcontroller devboards
38 parts755CERN-OHL-P-2.0
4 layers21 × 51 mm
Easyduino RP2040
Hanqaqa/Easyduino755Easily dive into different PCB KiCad designs of the most popular microcontroller devboards
- Size
- 21 × 51 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 61
- Pads
- 245
- Tracks, vias
- 570, 88
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 Apr 2026
- Updated
- 28 Jun 2026
Overview
Easyduino RP2040 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 21 × 51 mm with 65 parts on 61 nets, routed with 570 tracks and 88 vias.
It is built around the RP2040, W25Q16JVUXIQ and XC6206P332MR. Its parts include 17 capacitors, 15 resistors, 5 connectors, 4 diodes and 3 ICs. It belongs with the microcontroller boards boards and the ESP32, RP2040 and STM32 boards of this library.
Main components
3
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q16JVUXIQ
USON-8-EP(2x3)-40℃~+85℃ 100,000 cycles 10uA 133MHz 16Mbit 2.7V~3.6V 20 Years 3ms SPI USON-8-EP(2x3) NOR FLASH ROHSWinbond ElecNOR FLASH
XC6206P332MR
SOT-23-40℃~+85℃@(Ta) 1 1uA 200mA 3.3V 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage 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
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | ~ | rp2040_lib:TestPoint_pad | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP14 |
| 11 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C5, C6, C7, C8, C9, C10, C11, C12, C15 |
| 8 | 1k | Resistor_SMD:R_0402_1005Metric | R8, R9, R10, R11, R12, R13, R14, R15 |
| 5 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R6, R7 |
| 4 | 1uF | Capacitor_SMD:C_0402_1005Metric | C3, C4, C13, C14 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | LED | LED_SMD:LED_0402_1005Metric | D2, D3, D4 |
| 2 | 27R | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | 27p | Capacitor_SMD:C_0402_1005Metric | C16, C17 |
| 2 | Conn_01x20 | Connector_PinHeader_2.54mm:PinHeader_1x20_P2.54mm_Vertical | J3, J4 |
| 2 | SW_Push | RP2040:ALPSALPINE_SKRPACE010 | SW1, SW2 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | Conn_01x03_MountingPin | Connector_JST:JST_SH_BM03B-SRSS-TB_1x03-1MP_P1.00mm_Vertical | J6 |
| 1 | D_Schottky | Diode_SMD:D_SOD-123 | D1 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U2 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1 |
| 1 | W25Q16JVUXIQ | RP2040:W25Q16JVUXIQ | U3 |
| 1 | XC6206P332MR | Package_TO_SOT_SMD:SOT-23-3 | U1 |
Questions
How big is the Easyduino RP2040 PCB?
It measures 21 × 51 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Easyduino RP2040 use?
65 parts, built around the RP2040, W25Q16JVUXIQ and XC6206P332MR. 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 RP2040 KiCad files?
From the Hanqaqa/Easyduino repository on GitHub, at the commit this page was made from: the board is Raspberry Pi Pico 2040/Easyduino_RP2040.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 RP2040 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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