2 layers65 × 56 mm
2 layers54 × 24 mm
MicroBBPS
stasiselectronics/MicroBBPS14Small breadboard power supply that offers MicroUSB connector for 5V power, a screw terminal for max 20v DC power. Select between 5V, 3.3V or Vin for each power rail.
- Size
- 54 × 24 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 12
- Pads
- 67
- Tracks, vias
- 60, 10
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 9 Nov 2020
- Updated
- 29 Aug 2021
Overview
MicroBBPS is an open-source printed circuit board by stasiselectronics, from the stasiselectronics/MicroBBPS repository on GitHub. It is a 2-layer board of 54 × 24 mm with 23 parts on 12 nets, routed with 60 tracks and 10 vias.
Its parts include 8 capacitors, 6 connectors, 3 diodes, 2 resistors and 2 ICs. It belongs with the power boards of this library.
README
README.mdMicroBBPS
Breadboard Power Supply
A small, Micro USB connected power supply designed to fit onto the power rails of a solderless breadboard.
For each side, you can select between 3.3 & 5.0 Volt linear regulators, or the input voltage at the screw terminal.
The integrated version adds 26 breadboard rows and 2 continuous power rails. So you can turn those prototypes into something more permanent with an easy microUSB power connector.
Check out the integrated version's repository branch
Documentation
If you would like to read more about how the design works and see some of the technical information, be sure to check out the documentation site that accompanies this project.
Read the Docs
This site is hosted on Github Pages, a great way to deploy your own static website using jekyll. It uses the wonderful theme Minimal Mistakes by Michael Rose.
Learn more about github pages.
Development
This open source hardware project is developed using KiCAD and inkscape. It exists as a schematic and pcb design, with supporting files to create the necesarry output files for Printed Circuit Board fabrication.
Status
Assemblies and Parts Kits are still available to purchase on Tindie, however current stock is starting to run low.
The PCBA is currently at Revision A02. The tag for this release contians all the design files as they were when fabrication files were generated.
Updates
If you would like to keep up to date with this project, be sure to check out my instagram
stasis.electronics
A02 Fabrication
After incorporating the design changes from the first revision, the second revision came out great!
There are still a few details to try and adjust for any future fabrication.
- Silkscreen adjustments for better image fidelity
- Still have some mechanical rocking on the solderless version when inserted into a breadboard
Some of the major changes between on A02 from A01 are
- Smaller board shape
- Changed LEDs to 1206 for better part availability and easier hand soldering
- Larger silkscreen features
- Integrated version
A01 Fabrication
Here are some photos of the first board revision
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 220nF 50V | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C2, C3, C4 |
| 2 | 10µF 16V | Capacitor_SMD:CP_Elec_4x5.4 | C5, C7 |
| 2 | 3PoleHeaderSwitch | MicroBBPS:3PoleHeaderSwitch | J8, J9 |
| 2 | 47µF 10V | Capacitor_SMD:CP_Elec_4x5.4 | C6, C8 |
| 2 | Conn_02x03 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J3, J4 |
| 2 | LED | Diode_SMD:D_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1, D3 |
| 1 | 0R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2 |
| 1 | 56R 0.25W | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 1 | Conn_01x02 | MicroBBPS:WJ124-3.81-2P | J5 |
| 1 | D | Diode_SMD:D_SMA | D2 |
| 1 | LOGO | MicroBBPS:artwork-bottom | G*** |
| 1 | LOGO | MicroBBPS:artwork-top | G*** |
| 1 | NCP1117ST33T3G | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | NCP1117ST50T3G | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | USB_B_Micro | MicroBBPS:U-F-M5DD-Y-L | J2 |
Questions
How big is the MicroBBPS PCB?
It measures 54 × 24 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MicroBBPS use?
23 parts. 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 MicroBBPS KiCad files?
From the stasiselectronics/MicroBBPS repository on GitHub, at the commit this page was made from: the board is Hardware Files/MicroBBPS.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MicroBBPS design in my own project?
Its repository states no licence, so its author keeps all rights: ask stasiselectronics before reusing the design.
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