We’ve covered many boards that claim to be the world’s smallest development board, and Tomu board does not claim anything like that, but it’s pretty small, as it’s made to fit into your computer’s USB board. It may be cool, but it could also potentially be useful, as the board exposes two (capacitive touch?) buttons, and two LEDs so you can use it as a computer accessory for example to add volume buttons, or as a Universal 2nd Factor (U2F) token supporting two-factor authentication (2FA) to login to compatible online services.
- MCU – Silicon Labs Happy Gecko EFM32HG309 ARM Cortex-M0+ up to 25 MHz with 64KB flash, 8KB RAM
- USB – 1x USB 2.0 FS port
- Misc – 2x buttons, 2x LEDs: 2 (red + green)
- Dimensions – 1.4mm thick (0.6mm thick PCB)
Singapore based Sutajio Ko-usagi – the company behind the project – provides the hardware designs files (KiCAD + gerber), and source code for the board on Github, so you can modify the hardware and/or software to meet your requirements. A mailing list and #tomu freenode IRC channel have been setup for support.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.