In order to use a Feather M0 for debugging some connections need to be made to the Segger J-Link JTAG Debugger. The following parts can be used to create a JTAG FeatherWing:

You can also use our SWD breakout board:

SWD (2x5 1.27mm) Cable Breakout Board

PRODUCT ID: 2743
This adapter board is designed to make it easier to use ARM dev boards that use slimmer 2x5 (0.05"/1.27mm pitch) SWD cables for programming.  It's helpful for using...
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This guide was first published on Jan 30, 2017. It was last updated on Jan 30, 2017. This page (Parts) was last updated on Sep 17, 2019.