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I'm a TA at university, and for the next years students in microcontroller, I will design a debug interface for the Arduino MKR WIFI 1010.

The 6 pads on the back is the debug interface as shown in the schematic

The back of the MKR WIFI 1010

Schematic showing signals from debug interface to the SAM D21 MCU

Any ideas on how to make a shield/connector? I can design/produce PCBs at the university.

Requirements:

  • The board should still be able to connect to the breadboard.
  • Interface to a 2x5 1.27mm SWD debugger
  • Optional: Reusability
  • Optional: A solution that doesn't need soldering.
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  • \$\begingroup\$ Look into pogo pins and some kind of holder, like a wooden block. Or if you are connecting a breadboard, you might need to do some kind of carrier board. Otherwise soldering those on isn't too difficult, but you'll need to bring it out to some wires/header because those might be right in the middle of the "trough", or short to the pins on either side. \$\endgroup\$
    – Ron Beyer
    Commented Jan 21, 2020 at 13:20

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The pads on the back of the arduino are designed to have a double row vertical surface mount terminal strip soldered to it.

From there you can make a 'dupont' cable assembly to connect it to the debugger. Alternatively a number of adaptor boards exist to connect to common debuggers. Or create a pcb that can plug into the terminal strip and provides a connector of your choice.

(Height may be an issue, but there are low profile terminal strip assemblies.)

I found this page which may be of help: https://forum.arduino.cc/index.php?PHPSESSID=c8uhmcjvsmn453is1v0k9t0ui7&topic=442133.0

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