2 layers
2 layers85 × 56.5 mm
Motherboard
BryggansBryggeri/electrical1Electronics, hardware schematics
- Size
- 85 × 56.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 60
- Pads
- 126
- Tracks, vias
- 182, 28
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Nov 2018
- Updated
- 30 Jun 2020
Overview
Motherboard is an open-source printed circuit board by BryggansBryggeri, from the BryggansBryggeri/electrical repository on GitHub. It is a 2-layer board of 85 × 56.5 mm with 34 parts on 60 nets, routed with 182 tracks and 28 vias.
It is built around the TLC272CD. Its parts include 11 resistors, 8 connectors, 3 ICs, 3 diodes and 2 transistors. It belongs with the computers and single-board computers boards of this library.
Main components
1README
motherboard/README.mdRaspberry Pi Hat Template
This project is a template for a Raspberry Pi Hat that was build on the guide lines published on github by the Raspberry Pi foundation. This template is designed to make it easier for hardware developers to design there own Rasberry Pi hats. The template was designed as a comprimse of cost, solderabilty, and footprint. The board has about 80% of its space still avalible to the user. The board also provides typical voltages that are required in many projects. The board is also capable of powering the Raspberry Pi. This makes this template sutable for development in automotive, industrial and home applications.
This project is licensed under the CERN OHL v1.2
Features
- Input voltage 5.5v - 25v
- 5v supply from DC/DC @ 2.1A
- 3.3v supply from LDO @ 1.5A
- Backpowering protection ciruit
- Device ID eeprom
- Compliant with Raspberry Pi Hat specifications
Basic Usage Guide
To use this template first you must clone the repository to some working directory. If you are in windows you can just download the zip right from git.
git clone http://git.openfet.com/julien/pihat-templateOpen the project in KiCad, you may need to add the library "project-libs" using the library wizard. Then you can add your own components, once the components are added you can tie them to the 3.3v or 5v net depending on what voltages are required. Once done you can then choose the components from CvPCB application. Export the netlist and then import it in PCBNew.
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | Conn_01x02_Male | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1, J2, J3, J4, J5, J7 |
| 4 | RPi_Hat:RPi_Hat_Mounting_Hole | , , , | |
| 3 | 230 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R6, R7, R8 |
| 2 | 100 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R9, R10 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2, R4 |
| 2 | 30 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3, R5 |
| 2 | D | Diode_SMD:D_0603_1608Metric | D2, D3 |
| 2 | Q_NMOS_GSD | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 10k | Potentiometer_SMD:Potentiometer_Vishay_TS53YL_Vertical | RV1 |
| 1 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R11 |
| 1 | 74AUC2G04 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | C | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | LOGO | graphic:bryggans_logo | G*** |
| 1 | R | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1 |
| 1 | Raspberry_Pi_+_Conn | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | P1 |
| 1 | TLC272 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | XLR3 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-3-5.08_1x03_P5.08mm_Horizontal | J6 |
| 1 | d | Diode_SMD:D_0603_1608Metric | D1 |
| 1 | quad_and | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U2 |
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Questions
How big is the Motherboard PCB?
It measures 85 × 56.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Motherboard use?
34 parts, built around the TLC272CD. 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 Motherboard KiCad files?
From the BryggansBryggeri/electrical repository on GitHub, at the commit this page was made from: the board is motherboard/motherboard.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Motherboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask BryggansBryggeri before reusing the design.