Hardware Reference
In-Depth Information
F.
Blinky Buildings Source Files
Blinky Buildings is a simple kit to teach people how to make derivatives of open source
hardware. You are welcome to create a derivative of this kit as long as it abides by the Open
Source Hardware Definition. All source files for the Blinky Buildings kit are online at
ht-
tp://bit.ly/blinkybuildings
.
This appendix contains the README file and source files suit-
able for a print version of this topic.
README
This README file consists of the following headings: About this Kit, Material and Tools,
Attribution, and Licensing. README files do not always contain the exact same informa-
tion, but if you're building open source hardware, you can use this README file as a guide.
About This Kit
This kit blinks 20 LEDs from an ATtiny85. The code was written in Arduino and uses a
technique called charlieplexing to drive multiple LEDs using just 5 pins of the ATtiny.
This kit assumes you know how to solder. If not, there are plenty of online tutorials on
soldering. The kit is fairly quick to put together, taking roughly 10 minutes, and the chip
has been programmed for you!
Materials and Tools
Here are the parts you need to get started:
20 LEDs (with a maximum current of 20 mA)
5 resistors (for 3.2 V forward-voltage LEDs, I used 680 ohm resistors)
1 ATtiny85
1 battery holder
1 3 V battery
1 switch
Here are the tools you'll need to get started:
Soldering iron
Solder
Wire clippers
