Femtoduino: an ultrasmall (20.7x15.2 mm) libre Arduino compatible board
Femtoduino is an ultrasmall (20.7x15.2 mm) libre Arduino compatible board.
By using the QFN32 version of the ATMEGA 328p, 0.05" connectors, 0402 components and removing everything not strictly necessary, I've been able to design and hand build an Arduino compatible board which is very small (20.7x15.2 mm) and ultra light (2g) but has exactly the same computing power of the Arduino Duemilanove or UNO.
Femtoduino has been developed for ultrasmall Arduino prototyping. I had the need to add "Arduino intelligence" to quite small objects (balls, cubes, mices, etc) so I needed to shrink down the size of Arduino as much as possible. Femtoduino is the result.
For regular prototyping, Femtoduino comes with a handy breakout board which breaks out Femtoduino's 0.05" connectors into regular 0.1" pins so that you can use it on standard breadboards or perfboards.
Femtoduino schematics are based on the Arduino Pro Mini by Sparkfun Electronics and Arduino Mini by Team Arduino.
Video presentation of Femtoduino
Femtoduino Sources and Schematics
Below you find all the sources needed to build your own Femtoduino:
- Femtoduino v0.2 - Schematics
- Femtoduino v0.2 - Kicad Sources (including breakout board) sorry for the mess in this archive didn't had the time to cleanup things.
- Femtoduino v0.2 - Bill of Materials open it with Calc in the OpenOffice suite. Set semicolon separator on file opening. Mouser Femtoduino cart. Also useful male and female 0.05" connectors.
- Femtoduino v0.2 - Gerbers tested on production
- Femtoduino Breakout board v0.2 - Gerbers tested on production
- Femtoduino testing sketch - See file comments for instructions.
You can get the most updated sources from my personal repository using bzr with the following command:
Please support the project!
Femtoduino is a true libre hardware project. I released it under a libre licence to allow people to build their own and to give my contribution to the Arduino community.
However, I spent a lot of time designing Femtoduino, so if you are going to use its designs for your own projects or if you plan to sell clones of Femtoduino I'd really appreciate if you could donate me some money to support further versions of Femtoduino or my other libre hardware projects.
Donations can be made using Paypal to my account: fvaresano [at] yahoo [dot] it
Alternatively you cneveran use the donate button on the right sidebar of the page.
Even a couple of dollar/euro helps! Thank you.
Please leave a comment below. Thank you.