2 layers57 × 55.2 mm
LogicAnalyzer
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
10 parts5.1kGPL-3.0
2 layers24.1 × 15.9 mm
BreadboardLEDArray
SonOfSofaman/BreadboardLEDArray2SofaTronics' world famous Breadboard LED Array
- Size
- 24.1 × 15.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 17
- Pads
- 34
- Tracks, vias
- 17, 0
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 15 Jul 2024
- Updated
- 15 Jul 2024
Overview
BreadboardLEDArray is an open-source printed circuit board by SonOfSofaman, from the SonOfSofaman/BreadboardLEDArray repository on GitHub. It is a 2-layer board of 24.1 × 15.9 mm with 10 parts on 17 nets, routed with 17 tracks and 0 vias.
Its parts include 8 diodes and 1 connector.
README
readme.mdBreadboard LED Array
I created this LED Array for use in my construction of the internet famous Ben Eater 8-bit Computer, but they could be handy for any breadboard project that requires groups of 8 LEDs.
If you wish to make your own, the files for the PCB and links to the parts can be found below. Some assembly required.
Go ahead. Laugh at my sloppy construction. I had a 3D printed assembly jig made after I did this one by hand. What a difference it made. Thanks, Luke!
How to use
The pins are strategically arranged so you can connect the array directly to pins 2-9 (address lines) and pin 10 (ground) of a 74LS245 Bus Transceiver without any wires. To accomodate pinouts of other ICs, you could install a mix of jumper wires and header pins as needed. Use straight headers if you want the board to lie flat. I designed for minimum footprint, hence the 90° header.
The onboard resistor array limits the current to the LEDs so no external parts are needed. Use something like 680Ω, or go as high as 1k. You could use lower resistance if you like brighter LEDs but I wouldn't go below 270Ω.
PCBs
This GitHub repository contains the KiCad 7 files for the circuit board. Also included are the Gerber files if you want to fabricate your own boards. See the /fab folder.
Use this project link to purchase the boards from OSH Park.
Parts
Use this parts list if you want to buy the LEDs and/or resistors from Mouser.
BreadboardLEDArray © 2023 by SofaTronics / SonOfSofaman is licensed under CC BY-NC-SA 4.0
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | LED | LED_THT:LED_Rectangular_W5.0mm_H2.0mm | D1, D2, D3, D4, D5, D6, D7, D8 |
| 1 | 270 ohm resistor network | Resistor_THT:R_Array_SIP9 | RN1 |
| 1 | 9x1 pin header | Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Horizontal | J1 |
Questions
How big is the BreadboardLEDArray PCB?
It measures 24.1 × 15.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the BreadboardLEDArray use?
10 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 BreadboardLEDArray KiCad files?
From the SonOfSofaman/BreadboardLEDArray repository on GitHub, at the commit this page was made from: the board is hardware/BreadboardLEDArray.kicad_pcb and its schematic hardware/BreadboardLEDArray.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BreadboardLEDArray design in my own project?
Its repository states no licence, so its author keeps all rights: ask SonOfSofaman before reusing the design.
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