2 layers46 × 19 mm
MCU Link Standalone
ErichStyger/McuLink-Mini
Version of the NXP MCU-Link Debug CMSIS-DAP Debug Probe.
69 parts32MIT
2 layers57.9 × 39.9 mm
MCU Link MR
ErichStyger/MCU-Link-MR20Open Source MCU-Link CMSIS-DAP Debug probe for mobile robots (e.g. Pixhawk)
- Size
- 57.9 × 39.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 121
- Nets
- 87
- Pads
- 425
- Tracks, vias
- 1,351, 319
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 May 2024
- Updated
- 1 Jul 2026
Overview
MCU Link MR is an open-source printed circuit board by ErichStyger, from the ErichStyger/MCU-Link-MR repository on GitHub, published under the MIT licence. It is a 2-layer board of 57.9 × 39.9 mm with 121 parts on 87 nets, routed with 1,351 tracks and 319 vias.
It is built around the MCP6001T-I/OT(MS), 74LVC1T45GW and 74LVC2T45DC, with the LPC55S69JBD64, XC6227C331PR-G and MPZ1608S331ATD25 among its other parts. Its parts include 47 capacitors, 28 resistors, 11 ICs, 9 connectors and 7 inductors. It belongs with the robots and motor control and sensors and measurement boards and the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
9
MCP6001T-I/OT(MS)
SOT-23-5-2.75V~-1.35V、1.35V~2.75V -25℃~+85℃ 1 1.2V/us 1.5MHz 1pA 2.1V~5.5V 28uA 2pA 500uV 650nV/℃ 95dB Built-in compensation、Zero drift / auto-zero Rail-to-Rail Input, Rail-to-Rail Output SOT-23-5 Operational Amplifier ROHSMSKSEMIOperational Amplifier
74LVC1T45GW
SC-88-40℃~+125℃ 1 1 1.2V~5.5V 1.2V~5.5V 420Mbps Bidirectional Power-Off Protection Tri-State SC-88 Translators, Level Shifters ROHSNexperiaTranslators, Level Shifters
74LVC2T45DC
VSSOP-8-0.5mm-40℃~+125℃ 1 1.2V~5.5V 1.2V~5.5V 2 420Mbps Bidirectional Power-Off Protection Tri-State VSSOP-8-0.5mm Translators, Level Shifters ROHSNexperiaTranslators, Level ShiftersLPC55S69JBD64
UncategorisedNXP Semiconductors
XC6227C331PR-G
SOT-89-5-40℃~+85℃@(Ta) 1 100uA 120mV@(300mA) 3.3V 65dB@(1kHz) 6V 700mA Fixed Over Current Protection Positive SOT-89-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
MPZ1608S331ATD25
0603-55℃~+125℃ 1 1.7A 330Ω@100MHz 80mΩ ±25% 0603 Ferrite Beads ROHSTDKFerrite Beads
KMR221GLFS
SMD,4.6x2.8mm-40℃~+85℃ 1.9mm 2.8mm 2N 32V 4.6mm 50mA Gull Wing Round Button SPST Surface Mount,Vertical SMD,4.6x2.8mm Tactile Switches ROHSC&KTactile Switches
PESD5V0L5UV,115-ES
SOT-563ESD And Surge Protection (TVS/ESD)ElecSuper
PRTR5V0U2X-QR
SC-79UncategorisedNexperia
README
README.mdMCU-Link-MR
Project for the NXP MCU-Link Debug Probe with KiCAD, as a debug drone for mobile robotics platforms.
This project is hosted on GitHub: https://github.com/ErichStyger/MCU-Link-MR
See https://mcuoneclipse.com/2024/05/05/cmsis-dap-debug-probe-for-robots-and-pixhawk-with-kicad/
You can order the v0.2 board as produced by NXP: https://www.nxp.com/design/design-center/software/development-software/mcuxpresso-software-and-tools-/mcu-link-mr-debug-probe-with-usb-c-serial-and-mobile-robotics-interfaces:MCU-LINK-MR. See the package content and getting started at https://mcuoneclipse.com/2025/04/13/mcu-link-mr-affordable-cmsis-dap-debug-probe-for-robotics-and-beyond/
Features
The MCU-Link-MR is an open source debug probe, based on the original NXP MCU-Link.
The MCU-Link-MR supports debugging ARM-Cortex devices plus includes multiple headers used for robots and drone projects.
- Binary firmware compatibility with the original MCU-Link debug probe
- Size: 58x40 mm, dual-layer PCB
- Laser-cut top-cover enclosure
- USB-C host connector
- Reset button for debug probe (LPC55S69) and target
- ARM target debug header (10pin 2x1.27 mm) to debug any ARM Cortex target
- Multiple robot and drone debug and UART connectors:
- Pixhawk Debug Full debug header (10pin JST-SH) with UART
- Pixhawk Debug Mini debug header (6pin JST-SH) with UART
- DCD-LZ Debug header (7pin JST-GHS) with UART
- Target UART for NavQPlus Companion Computer (6pin JST-GH), supporting flow control (CTS/RTS) (with board rev 0.4 or later)
PCB
Renderings below show the v0.2 version.
v0.1
The first v0.1 version and the v0.2 version:
v0.2
PCB of the v0.2:
v0.3
PCB of the v0.3:
v0.4
PCB of the v0.4:
PCB of the v0.5:
Versions
The gerber files for the different releases can be found in KiCAD project directory.
v0.5
- Upgraded to KiCad v9.0
- added isolation solder-jumpers for RTS and CTS
- changed Resistor and Capacitor size from 0603 to 0402
- removed all designators on silkscreen
- added 3 pin 2.54mm Pixhawk header for logic analyzer access
- added NXP logo on the back
- see https://mcuoneclipse.com/2025/12/29/mcu-link-mr-v0-5-enhanced-debug-probe-for-arm-cortex-m/
v0.4
- fixed pull-up on CTS line to pull-down
v0.3
- Added RTS/CTS signals with level shifters for J11/NavQPlus connector
- Issue: this PCB has pull-ups for the CTS line instead of pull-down. Fixed in v0.4
v0.2
- Improved footprints and silkscreen
- Push button instead of jumper for DFU mode
- fixed UART connection on debug headers
v0.1
- Initial version
- Issue with UART on debug headers (works fine on UART header) (fixed in v0.2)
PCB Production
PCBs have been produced by PCBWay (https://www.pcbway.com/), with following settings:
- Size: 58x40 mm
- Layers: 2
- Soldermask (top, bottom): blue (Note: green is possible too, PCBWay won't accept black because this requires minimal 0.22 mm soldermask distance between pins)
- Silkscreen (top, bottom): white
- Material: FR4, TG 150-160
- Thickness: 1.6 mm
- Min track/spacing: 6/6 mil
- Min hole size: 0.3 mm
- Surface finish: HASL with lead (Note: for production use HASL lead free or immersion gold (ENIG))
- Vias: tenting vias
- Finished copper: 1 oz Cu
Links
- Article about production version: https://mcuoneclipse.com/2025/04/13/mcu-link-mr-affordable-cmsis-dap-debug-probe-for-robotics-and-beyond/
- Article about v0.2: https://mcuoneclipse.com/2024/05/19/mcu-link-mr-v0-2-drone-and-robot-debug-probe-with-uart-2-usb-bridge/
- Article for the project: https://mcuoneclipse.com/2024/05/05/cmsis-dap-debug-probe-for-robots-and-pixhawk-with-kicad/
- Base hardware project used: https://mcuoneclipse.com/2024/02/06/versatile-oshw-mini-mcu-link-debug-probe-external-on-board-or-embedded/, GitHub: https://github.com/ErichStyger/McuLink-Mini
- NXP MCU-Link: https://www.nxp.com/design/design-center/software/development-software/mcuxpresso-software-and-tools-/mcu-link-debug-probe:MCU-LINK
- NXP LinkServer: https://www.nxp.com/design/design-center/software/development-software/mcuxpresso-software-and-tools-/linkserver-for-microcontrollers:LINKERSERVER
- MCU-Link with Cortex-Debug and LinkServer: https://mcuoneclipse.com/2023/11/27/mcu-link-with-cortex-debug-and-linkserver/
- LinkServer for Microcontrollers: https://mcuoneclipse.com/2023/05/14/linkserver-for-microcontrollers/
Parts
121| Qty | Value | Footprint | References |
|---|---|---|---|
| 29 | 100nF 6.3V | Capacitor_SMD:C_0402_1005Metric | C2, C3, C13, C17, C20, C23, C24, C27, C28, C30, C31, C32, C34, C35, C36, C37 +13 |
| 9 | 10R 5% 100mW | Resistor_SMD:R_0402_1005Metric | R6, R9, R10, R11, R17, R19, R25, R26, R27 |
| 7 | 74LVC1T45GW | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U4, U5, U7, U8, U9, U10, U11 |
| 6 | 2k 5% 100mW | Resistor_SMD:R_0402_1005Metric | R8, R13, R21, R22, R23, R24 |
| 5 | 100k 5% 100mW | Resistor_SMD:R_0402_1005Metric | R5, R12, R14, R20, R28 |
| 5 | 10nF 6.3V | Capacitor_SMD:C_0402_1005Metric | C7, C8, C9, C10, C26 |
| 4 | 10uF 6.3V | Capacitor_SMD:C_0402_1005Metric | C22, C25, C29, C33 |
| 4 | MPZ1608S331ATD25 | Inductor_SMD:L_0603_1608Metric | L1, L3, L4, L5 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad | H1, H2, H3, H4 |
| 3 | 22uF 6.3V | Capacitor_SMD:C_0402_1005Metric | C15, C18, C19 |
| 3 | 47pF 6.3V | Capacitor_SMD:C_0402_1005Metric | C14, C16, C21 |
| 3 | Fiducial | McuOnEclipse:Fiducial_1mm_Dia_2.54mm_Outer_CopperTop | FID1, FID2, FID3 |
| 3 | KMR221GLFS | McuOnEclipse:SW_C_K_KMR2 | SW1, SW2, SW3 |
| 3 | PESD5V0L5UV,115 | Package_TO_SOT_SMD:SOT-666 | D2, D3, D4 |
| 2 | 100R 5% 100mW | Resistor_SMD:R_0402_1005Metric | R15, R18 |
| 2 | 5.1k 5% 100mW | Resistor_SMD:R_0402_1005Metric | R4, R7 |
| 2 | 8pF 6.3V | Capacitor_SMD:C_0402_1005Metric | C11, C12 |
| 2 | Jumper_2_Open | McuOnEclipse:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | J4, J5 |
| 1 | 0R 5% 100mW | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 10k 5% 100mW | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 20k 5% 100mW | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 33k 5% 100mW | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 4.6uH | Inductor_SMD:L_0805_2012Metric | L2 |
| 1 | 4.7uF 6.3V | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 74LVC2T45DC | McuOnEclipse:VSSOP-8_2.3x2mm_P0.5mm | U3 |
| 1 | CTS | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP3 |
| 1 | JST-GH BM06B-GHS | Connector_JST:JST_GH_BM06B-GHS-TBT_1x06-1MP_P1.25mm_Vertical | J11 |
| 1 | JST-GH SM07B-GHS | McuOnEclipse:JST_GH_SM07B-GHS-TB_1x07-1MP_P1.25mm_Horizontal | J8 |
| 1 | JST-SH BM06B-SRSS | McuOnEclipse:JST_SH_BM06B-SRSS-TB_1x06-1MP_P1.00mm_Vertical | J2 |
| 1 | JST-SH SM10B-SRSS | McuOnEclipse:JST_SH_SM10B-SRSS-TB_1x10-1MP_P1.00mm_Horizontal | J1 |
| 1 | LED_RED | LED_SMD:LED_0603_1608Metric | LED1 |
| 1 | LPC55S69JBD64 | McuOnEclipse:LQFP-64-1EP_10x10mm_P0.5mm_EP3.5x3.5mm | U1 |
| 1 | Logic Analyzer | McuOnEclipse:Pin_Header_Straight_1x03_Pitch2.54mm_Small | J3 |
| 1 | Logo HSLU | McuOnEclipse:Hochschule_Luzern_New | L6 |
| 1 | Logo NXP | McuOnEclipse:Logo_NXP | L7 |
| 1 | MCP6001T-I/OT | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | NX3225GB-16M-STD-CRA-2 | McuOnEclipse:CX3225GA16000D0PTVCC | Y1 |
| 1 | PRTR5V0U2X-QR | Package_TO_SOT_SMD:SOT-143 | D1 |
| 1 | RTS | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP2 |
| 1 | SWD 2x05 1.27mm | McuOnEclipse:SWD_Pin_Header_Straight_2x05_Pitch1.27mm_SMD_Shrouded | J6 |
| 1 | SolderJumper_3_Bridged12 | Jumper:SolderJumper-3_P1.3mm_Bridged2Bar12_RoundedPad1.0x1.5mm_NumberLabels | JP1 |
| 1 | USB4110-GF-A_REVB | McuOnEclipse:USB_C_Receptacle_GCT_USB4110-GF-A | J9 |
| 1 | XC6227C331PR-G | McuOnEclipse:SOT-89-5 | U2 |
Questions
How big is the MCU Link MR PCB?
It measures 57.9 × 39.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MCU Link MR use?
121 parts, built around the MCP6001T-I/OT(MS), 74LVC1T45GW, 74LVC2T45DC and LPC55S69JBD64. 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 MCU Link MR KiCad files?
From the ErichStyger/MCU-Link-MR repository on GitHub, at the commit this page was made from: the board is KiCAD/MCU-Link_MR/MCU-Link_MR.kicad_pcb and its schematic KiCAD/MCU-Link_MR/MCU-Link_MR.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MCU Link MR design in my own project?
Its repository publishes it under the MIT 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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