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**Abandoned** Tomu+ board - no longer under development!
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README.md

THIS PROJECT HAS BEEN ABANDONED!

The Tomu+ has been abandoned and is not under development.









































Tomu+, I'm

I'm Tomu+ a improved tiny ARM microprocessor which fits in your USB port. I have two buttons and two LEDs.

Tomu Front Render Tomu Back Render

Contact

WARNING: This design hasn't been proven yet!

Built out of a 3d printed part + 2 layer "thin" PCB (0.4mm or 0.6mm thick).

The board has;

  • 6mil traces
  • 6mil clearance
  • 0.3mm drill / 0.6mm vias

--

Uses a Freescale Semiconductor / NXP Kinetis KL27 (MKL27Z256VFM4) (datasheet).

The important features are;

These make something which is almost hand solder-able fit into the tiny size.

BOM

All parts are ordered from Digikey but could easily be ordered from somewhere else.

Individual parts;

  • Resistors
  • 2 x 0402 - 33 Ohm - Digikey
  • 2 x 0402 - ~50 Ohm (Depends on LED choice)
  • 1 x 0402 - 10k Ohm
  • 1 x Capacitor ~2.2uF 0402
  • 1 x Capacitor ~4.7uF 0402
  • 2 x LED 0402
  • 1 x MKL27Z256VFM4 - Digikey

  • (Optional) 1 x Atmel ATECC508A Auth IC - Digikey

TODO

  • Create the device
  • Create the 3d print model.
  • Write the firmware for the device.

FAQ

Why did you create this?

The aim was to prove that a device which fits in your USB port could be created by hobbists in small quantities extremely cheaply.

Where does the name Tomu come from?

TOMU comes from the abbreviation "Tim's Open Micro USB".

What can I use this for?

What ever you want! If you do create something, please send me the info!

License

The contents of this repository excluding "third_party" folder is released under your choice of the following two licences:

  • the "Creative Commons Attribution-ShareAlike 4.0 International License" (CC BY-SA 4.0) full text of this license is included in the LICENSE file and a copy can also be found at http://creativecommons.org/licenses/by-sa/4.0/

  • the "TAPR Open Hardware License" full text of this license is included in the LICENSE file and a copy can also be found at http://www.tapr.org/OHL