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Red ducky

Xpandaru·Red-ducky·PCB/red_ducky.kicad_pcb

Red ducky PCB layout, top view — open source RP2040/RP2350 board by Xpandaru

About the Red ducky PCB

Red ducky is an open source RP2040/RP2350 PCB design by Xpandaru, published on GitHub. It is a 2-layer board measuring 16 × 40 mm, with 30 components from 14 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the MCP1700X-330XXTT and C2843335. By type, the board carries 17 capacitors, 6 resistors, 3 ICs, 1 crystal, 1 connector and 1 switch.

It belongs with the keyboards designs in this gallery.

From the project

In this project I'll make my own Rubber Ducky, named Red ducky ! A Rubber Ducky is a hacking tool that mimics a keyboard to inject a sequence of keys. I started this project with no knowledge of PCB design, so it promises to be very educational.

It all started when a friend introduced me to Hack Club during the Cyber ​​Ninja CTF (a cybersecurity competition organized by Oteria Cyber ​​School). I was quickly drawn to the Blueprint program because I knew absolutely nothing about electronics, and being very curious, I saw it as the perfect opportunity to explore the field. I soon had the idea to recreate a Rubber Ducky (a very popular cybersecurity tool) to understand how it worked and have my own by the end of the project. From there, I began learning all the necessary knowledge and developing my project based on the custom devboard…

Red ducky, from the project README
From the project README

Main components on the Red ducky

RP2040MCP1700X-330XXTTC2843335

Red ducky bill of materials (BOM)

30 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
U1
1
MCP1700X-330XXTT
MCP1700x-330xxTT
U2
1
C2843335
W25Q16JVUXIQ TR
U3
1
C93234
12 MHz
Y1
1
C2765195
USB_A
J1
1
SW_Push
SW1
1
LED
D1
2
1UF
1uF
C1, C10
11
0.1UF
0.1uF
C2, C3, C4, C5, C6, C7, C8, C9 +3
2
10UF
10uF
C13, C14
2
33PF
33pF
C15, C16
2
22
R1, R2
3
1K
R3, R5, R6
1
10K
R4

Red ducky design files

The KiCad project lives in the Xpandaru/Red-ducky repository on GitHub; these links point at the commit this page was built from.

Red ducky: common questions

What microcontroller does the Red ducky use?

The Red ducky is built around the RP2040, from the RP2040/RP2350 family.

How big is the Red ducky PCB?

The Red ducky measures 16 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Red ducky?

30 components, from 14 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Red ducky design files?

From the Xpandaru/Red-ducky repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Red ducky design in my own project?

The repository has no license, so all rights stay with Xpandaru. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Red ducky without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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