2 layers39 × 42.8 mm
Watch v3
KIIT-Robotic-Society/Dharma_RoboFest4.0
Dharma Bot is a quadruped robotic dog featuring 12-DOF locomotion, real-time sensing, and a modular subsystem design.
79 parts4MIT
2 layers104.4 × 40 mm
Project 3
devKOff/arm-header-pinout-boardCustom LPC2148 ARM7 development board designed in KiCad with USB-C, 5V protection, 3.3V regulation, USB ESD protection, crystal oscillator, reset, ISP/UART programming, JTAG, GPIO, I2C, SPI, ADC, DAC, LEDs, test points, and expansion headers for embedded development.
- Size
- 104.4 × 40 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 161
- Pads
- 346
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 25 Sep 2026
- Updated
- 5 Nov 2026
Overview
Project 3 is an open-source printed circuit board by devKOff, from the devKOff/arm-header-pinout-board repository on GitHub. It is a 2-layer board of 104.4 × 40 mm with 52 parts on 161 nets.
It is built around the LPC2148FBD64, AP2112K-3.3 and USBLC6-2SC6, with the AO3401A, BC847 and SMBJ5.0A among its other parts. Its parts include 13 capacitors, 13 resistors, 10 connectors, 5 diodes and 3 ICs. It belongs with the interfaces and adapters boards and the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
6
LPC2148FBD64
LQFP-64(10x10)-40℃~+85℃ 10bit 10bit 16/32 Bit 3V~3.6V 40KB 45 512KB 60MHz Built-in FLASH LQFP-64(10x10) Microcontrollers (MCU/MPU/SOC) ROHSNXP SemiconductorsMicrocontrollers (MCU/MPU/SOC)
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsBC847
SOT-231 NPN 100MHz 100mA 100nA 110 200mW 45V 500mV 6V NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)
SMBJ5.0A
DO-214AA(SMB)-65℃~+150℃ 5V 600W@10/1000us 65.3A@10/1000us 7V 800uA 9.2V TVS Unidirectional DO-214AA(SMB) ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)
README
README.mdARM Header Pinout Board
A custom breakout and header pinout board designed for ARM microcontroller development, providing structured signal routing, power distribution, and debugging access points.
📋 Project Overview
The ARM Header Pinout Board is engineered to simplify prototyping and peripheral interfacing for ARM-based microcontrollers. It breaks out all core GPIO, communication buses (SPI, I2C, UART), and power rails into clean, labeled standard pin headers, minimizing wiring clutter on the breadboard.
📂 Repository Structure
arm-header-pinout-board/
├── .history/ # Automatic local schematic and PCB version backups
├── Block 6 — Crystal/ # Sub-schematic blocks or modular design files
├── bom/ # Bill of Materials (CSV / HTML)
├── docs/ # Datasheets, schematics PDFs, and pinout diagrams
├── gerbers/ # Production-ready Gerber and drill files for PCB fabrication
├── hardware/ # 3D step models, enclosure designs, or mechanical CAD files
├── images/ # Photos, renders, and wiring diagrams
├── .gitignore # Git exclusion rules for KiCad temporary/lock files
├── LICENSE # Open-source license governing the hardware/code
├── README.md # Project documentation
├── changelog.md # Version history and revision notes
├── project_3.kicad_pro # KiCad project master file
└── project_3.kicad_pcb # Main printed circuit board layoutParts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100nF | Capacitor_SMD:C_0603_1608Metric | C4, C6, C7, C8, C9, C10, C12, C16 |
| 4 | 1k | Resistor_SMD:R_0603_1608Metric | R10, R11, R12, R13 |
| 4 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J2, J6, J7, J8 |
| 4 | LED | LED_SMD:LED_0603_1608Metric | D2, D3, D4, D5 |
| 3 | 10kΩ | Resistor_SMD:R_0603_1608Metric | R6, R7, R17 |
| 2 | 10µF | Capacitor_SMD:C_0805_2012Metric | C3, C5 |
| 2 | 18pF* | Resistor_SMD:R_0603_1608Metric | C1, C2 |
| 2 | 33Ω | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 5.1kΩ | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | Conn_02x10_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J3, J9 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_TL3305A | SW1, SW2 |
| 1 | 1.5kΩ | Package_TO_SOT_SMD:SOT-23 | R16 |
| 1 | 100kΩ | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 4.7µF | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 47Ω | Resistor_THT:R_Array_SIP14 | RN1 |
| 1 | 500mA PTC | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23-5 | Q1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | BC847 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | Conn_02x20_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J4 |
| 1 | Ferrite bead | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | GPIO_PORT1 | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J5 |
| 1 | LPC2148FBD64 | Package_QFP:LQFP-64_10x10mm_P0.5mm | U1 |
| 1 | SMBJ5.0A | Diode_SMD:D_SMA | D1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
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Questions
How big is the Project 3 PCB?
It measures 104.4 × 40 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Project 3 use?
52 parts, built around the LPC2148FBD64, AP2112K-3.3, USBLC6-2SC6 and AO3401A. 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 Project 3 KiCad files?
From the devKOff/arm-header-pinout-board repository on GitHub, at the commit this page was made from: the board is project_3.kicad_pcb and its schematic Block10.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Project 3 design in my own project?
Its repository states no licence, so its author keeps all rights: ask devKOff before reusing the design.