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TinyK20 open source ARM debug/universal board

Posted on Monday, May 18th, 2015 in ARM, open source by DP

k20-board-blocks

Erich has posted an update on his open source ARM debug/universal board project. We wrote about it previously:

After the proof of concept phase (see “Proof of Concept: Open Source ARM SWD Debug and General Purpose Board“), the first prototypes are ready
I had the first prototypes of the board we have produced internally in my hands.
A different USB connector can be populated on the backside of the board, so it can directly be plugged into a USB port. Additionally the board can be placed into a small USB thumb drive case that way (I don’t have one for a picture now, but we use them for a different project).

Project details at MCUonEclipse project page.

This entry was posted on Monday, May 18th, 2015 at 2:26 pm and is filed under ARM, open source. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

4 Responses to “TinyK20 open source ARM debug/universal board”

  1. KH says:

    Couldn’t find a schematics link. Any idea what’s all the parts between the MCU and the USB connector?

    • tinito says:

      The lower parts could be the circuitry to connect/disconnect the bus (mosfet + few passives), while the upper SOT23 could be the linear regulator. BTW, I’m only guessing :-)

    • KH says:

      Very useful, thanks! For the TL;DR crowd, the sot23 parts are actually both BAS40-05W dual Schottky diodes (common cathode, NXP part desig?, 200mA). The K20 uses its own LDO regulator, one of the BAS40 duals isolates the K20 from the +5V rail, the other BAS40 dual is for the VBAT inputs.

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