4 layers90 × 87.6 mm
2 layers19 × 39 mm
BadPico
justsem/badPico2An RP2040 mini-sized BadUSB clone
- Size
- 19 × 39 mm
- Copper layers
- 2
- Thickness
- 1.06 mm
- Parts
- 48
- Nets
- 60
- Pads
- 173
- Tracks, vias
- 238, 29
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 1 Apr 2022
- Updated
- 6 Apr 2022
Overview
BadPico is an open-source printed circuit board by justsem, from the justsem/badPico repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 19 × 39 mm with 48 parts on 60 nets, routed with 238 tracks and 29 vias.
It is built around the RP2040, W25Q128JVSIQ and SPX3819M5-L-3-3, with the 0805L050WR and SI2319CDS among its other parts. Its parts include 16 capacitors, 9 resistors, 3 ICs, 3 diodes and 3 switches. It belongs with the RP2040 boards of this library.
Main components
5
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
SPX3819M5-L-3-3
SOT-23-5-40℃~+85℃@(Ta) 1 20V 3.3V 420mV@(100mA) 500mA 5uA 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
0805L050WR
0805-40℃~+85℃ 1.25mm 1.5mm 100A 100ms 150mΩ 1A 2.2mm 500mA 500mW 6V 850mΩ 0805 Resettable Fuses ROHSLittelfuseResettable Fuses
SI2319CDS
SOT-23-55℃~+150℃ 1 P-Channel 108mΩ@4.5V 2.5V 2.5W 21nC@10V 4.4A 40V 595pF 61pF 76pF P-Channel SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs
README
README.mdbadPico!
An RP2040 mini-sized BadUSB clone
Size: 19x39mm
This tiny (19x34mm) device is just a common "Rubber Ducky" clone.
Without software this is just an RP2040-on-a-stick ;)
Usage
A good starting point for this board is the BadPico Repository by @EvgeniGenchev.
The board in general works identical to a Raspberry Pi Pico and can be programmed as such. However, due to the intended use-case the I/O pins are not available for usage with the exception of those listed below.
PinOuts
| Designator | GPIO | Type | Description |
|---|---|---|---|
| D4 | 25 | LED | Status LED |
| D3 | 24 | LED | User-programmable LED |
| SW1 | 0 | Switch | User-programmable switch. I use it as an 'arming' switch |
Bill of Materials (BoM)
| Name | Designator | Footprint | Manufacturer | Man. Part No. |
|---|---|---|---|---|
| 27pF | C15,C16 | C0402 | FH | 0402CG270J500NT |
| 100nF | C1-C9,C12 | C0402 | Yaego | CC0402KRX7R7BB104 |
| 1uF | C10,C11 | C0402 | Samsung | CL05A105KQ5NNNC |
| 10uF | C13,C14 | C0603 | Samsung | CL10A106MP8NNNC |
| Y | Y1 | 5032 | Abracon | ABMM2-12.000MHZ-E2-T |
| 24.7R | R3,R4 | R0402 | FH | RC-02W27R4FT |
| 330R | R5 | R0402 | FOJAN | FRC1206J331 |
| 1k | R7,R9,R10,R11 | R0402 | Walsin | MR04X102 |
| 100k | R8 | R0402 | FH | RS-03K104JT |
| Flash | U1 | WSON-8 | Winbond Elec | W25Q128JVPIQ |
| LDO | U2 | TSOT-23-5 | Maxlinear | SPX3819M5-L-3-3 |
| RP2040 | U3 | QFN-56 | Raspberry Pi | RP2040 |
| FET | Q1 | SOT-24 | Vishay | Si2319CDS |
| Diode | D2 | SOD_123F | Shandong | 1N4002W |
| LEDs | D3,D4 | D0402 | Everlight | 17-21/BHC-XL2M2TY/3T |
| Fuse | F1 | F0805 | LittelFuse | 0805L050WR |
| Bead | FB1 | F0402 | Chillsin | BBSY00100505101Y00 |
| USB | J1 | Custom | XKB Connectivity | U217-041N-4BV81 |
| SWT | SW2,SW3 | Custom | ALPS | SKRKAEE020 |
| SWF | SW1 | Custom | Shou Han | SK12D07VG4 |
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C8, C9, C12 |
| 3 | 330 | Resistor_SMD:R_0402_1005Metric | R5, R10, R11 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_2.0x2.0mm | TP3, TP4, TP5 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C13, C14 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R7, R9 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C10, C11 |
| 2 | 27.4 | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | 32pF | Capacitor_SMD:C_0402_1005Metric | C15, C16 |
| 2 | BOOT | ALPS:SW_SPST_ALPS_SKRKAEE020 | SW2, SW3 |
| 2 | LED | LED_SMD:LED_0402_1005Metric | D3, D4 |
| 1 | Graphics:jsorg-fs | ||
| 1 | Graphics:reset-lc-ca | ||
| 1 | Graphics:boot-lc-ca | ||
| 1 | Graphics:r1_0-ca | ||
| 1 | Graphics:rev-cc-ha | ||
| 1 | Graphics:date-cc-ha | ||
| 1 | 0402 | Resistor_SMD:R_0402_1005Metric | FB1 |
| 1 | 0805L050WR | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 1N4002 | Diode_SMD:D_SOD-123F | D2 |
| 1 | ARM | Button_Switch_THT:SW_DPDT_SK12D07VG4 | SW1 |
| 1 | Crystal | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | DNF | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | RP2040 | RPi:RP2040-QFN-56 | U3 |
| 1 | SPX3819M5-L-3-3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | Si2319CDS | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | USB_A | Connector_USB:Male_Type-A-XKB-U217-041N-4BV81 | J1 |
| 1 | W25Q128JVS | Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4mm | U1 |
Questions
How big is the BadPico PCB?
It measures 19 × 39 mm and has 2 copper layers, 1.06 mm thick.
What parts does the BadPico use?
48 parts, built around the RP2040, W25Q128JVSIQ, SPX3819M5-L-3-3 and 0805L050WR. 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 BadPico KiCad files?
From the justsem/badPico repository on GitHub, at the commit this page was made from: the board is Board Files/BadPico.kicad_pcb and its schematic Board Files/BadPico.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BadPico design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 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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