UniDebug
About the UniDebug PCB
UniDebug is an open source RP2040/RP2350 PCB design by shreyask21, published on GitHub. It is a 2-layer board measuring 143 × 164 mm, with 273 components from 67 distinct parts.
Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the GL850G-HH, STM32F103CBTx, LP5907MFX-3.3, SRV05-4 and MIC29302WU. By type, the board carries 86 resistors, 80 capacitors, 32 ICs, 21 diodes, 17 connectors and 14 jumpers.
It belongs with the usb & debug tools designs in this gallery.
From the project
Unified Debugger and Prototyping Tool for Microcontrollers and FPGAs
UniDebug is an open-source hardware project that serves as a unified debugger and prototyping tool for a wide range of microcontrollers and FPGAs. With versatile features and robust components, it provides a seamless debugging and development experience.
UniDebug integrates 4 independent microcontrollers, each running dedicated debug firmware:
The FT2232H provides dual-channel USB High-Speed JTAG/SPI/I2C via MPSSE.
Main components on the UniDebug
UniDebug bill of materials (BOM)
273 components, 67 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | GL850G-HH | GL850G-HH | U1 |
| 2 | STM32F103CBTx | LQFP-48_7x7mm_P0.5mm | U2, U3 |
| 5 | LP5907MFX-3.3 | SOT-23-5 | U4, U12, U16, U26, U32 |
| 14 | SRV05-4 | SOT-23-6 | U5, U6, U7, U8, U11, U18, U19, U20 +6 |
| 1 | MIC29302WU | TO-263-5_TabPin3 | U9 |
| 1 | TXS0108EPW | TSSOP-20_4.4x6.5mm_P0.65mm | U10 |
| 1 | W25Q128JVS | SOIC-8_5.23x5.23mm_P1.27mm | U13 |
| 1 | RP2040 | RP2040-QFN-56 | U14 |
| 1 | FT2232HL | LQFP-64_10x10mm_P0.5mm | U15 |
| 1 | 93LC66B | SOIC-8_3.9x4.9mm_P1.27mm | U17 |
| 1 | M24C02-FMN | SOIC-8_3.9x4.9mm_P1.27mm | U28 |
| 1 | LM2596S-5 | TO-263-5_TabPin3 | U29 |
| 1 | STM32G030C6Tx | LQFP-48_7x7mm_P0.5mm | U30 |
| 1 | 24LC128 | SOIC-8_3.9x4.9mm_P1.27mm | U31 |
| 4 | BC847 | SOT-23 | Q1, Q2, Q3, Q4 |
| 1 | DMP2305U-7 | SOT96P240X110-3N | Q5 |
| 2 | 8M | Crystal_SMD_HC49-SD | Y1, Y2 |
| 3 | 12MHz | Crystal_SMD_HC49-SD | Y3, Y4, Y5 |
| 3 | JST | JST_XH_B10B-XH-A_1x10_P2.50mm_Vertical | J1, J2, J10 |
| 3 | MALE | PinHeader_1x10_P2.54mm_Vertical | J3, J5, J11 |
Show 47 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | FEMALE | PinSocket_1x10_P2.54mm_Vertical | J4, J6, J12 |
| 2 | JST | JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_Horizontal | J7, J9 |
| 1 | BMDU | FTSH-105-01-L-D | J8 |
| 1 | FTDI | PinHeader_2x40_P2.54mm_Vertical | J13 |
| 2 | UART | JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J14, J15 |
| 1 | USB_C_Receptacle_USB2.0 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J16 |
| 1 | EXTPWR | BarrelJack_Horizontal | J17 |
| 7 | SolderJumper_2_Bridged | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP5, JP6, JP11, JP12, JP13, JP14 |
| 3 | SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2, JP3, JP4 |
| 1 | 3V3 | PinHeader_1x02_P2.54mm_Vertical | JP7 |
| 1 | 1V8 | PinHeader_1x02_P2.54mm_Vertical | JP8 |
| 1 | ADJ | PinHeader_1x02_P2.54mm_Vertical | JP9 |
| 1 | 5V0 | PinHeader_1x02_P2.54mm_Vertical | JP10 |
| 1 | 1K | Potentiometer_Bourns_3006P_Horizontal | RV1 |
| 6 | BUTTON | TS342A2P | SW1, SW2, SW3, SW4, SW5, SW6 |
| 1 | SW_DIP_x04 | SW_DIP_SPSTx06_Slide_9.78x17.42mm_W7.62mm_P2.54mm | SW7 |
| 1 | OLED-128O064D | OLED-128O064D | DS1 |
| 8 | BLUE | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D7, D9, D10, D13, D14, D15, D16 |
| 2 | RED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2, D6 |
| 6 | ORANGE | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3, D8, D17, D19, D20, D21 |
| 2 | YELLOW | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D4, D11 |
| 2 | GREEN | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5, D12 |
| 1 | SS34 | D_SMA-SMB_Universal_Handsoldering | D18 |
| 2 | 600E-500mA | L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | FB1, FB2 |
| 1 | 33uH | L_12x12mm_H4.5mm | L1 |
| 1 | 3uH | L_12x12mm_H4.5mm | L2 |
| 34 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C5, C8, C9, C10 +26 |
| 10 | 20p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C7, C11, C12, C29, C30, C58, C59 +2 |
| 21 | 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C17, C18, C21, C22, C23, C26, C31, C33 +13 |
| 10 | 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C32, C34, C35, C37, C39, C40, C41, C42 +2 |
| 2 | 10u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C36, C38 |
| 2 | 220uF | CP_Elec_10x10.5 | C73, C74 |
| 1 | 120uF | CP_Elec_6.3x5.4 | C75 |
| 8 | 100K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R20, R21, R28, R76, R80, R82 |
| 29 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4, R5, R6, R10, R15, R16, R17 +21 |
| 3 | 100E | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7, R11, R44 |
| 3 | 2K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R63, R86 |
| 1 | 36K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 21 | 330E | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R12, R13, R14, R19, R33, R39, R46, R48 +13 |
| 7 | 1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24, R32, R36, R61, R75, R83, R85 |
| 8 | 5.1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R30, R42, R77, R78, R93, R94, R95, R96 |
| 1 | 200E | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R43 |
| 1 | 620E | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R45 |
| 1 | 12.00K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R62 |
| 1 | 680.00E | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R72 |
| 1 | 20K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R74 |
| 1 | 560K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R87 |
UniDebug design files
The KiCad project lives in the shreyask21/UniDebug repository on GitHub; these links point at the commit this page was built from.
- LayoutUniDebug.kicad_pcb
- SchematicUniDebug.kicad_sch
UniDebug: common questions
What microcontroller does the UniDebug use?
The UniDebug is built around the RP2040, from the RP2040/RP2350 family.
How big is the UniDebug PCB?
The UniDebug measures 143 × 164 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the UniDebug?
273 components, from 67 distinct parts. The full bill of materials is listed on this page.
Where can I download the UniDebug design files?
From the shreyask21/UniDebug repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the UniDebug design in my own project?
The repository has no license, so all rights stay with shreyask21. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the UniDebug 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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