Such a program is generated during build in files update-bootloader*.uf2. If you're already running UF2 bootloader, the easiest way to update it, is to just copy this file to the exposed MSD drive.

Specifications of the SAMD21 M0+ Arduino-compatible board : Microcontroller: Atmel ATSAMD21G18A ARM Cortex M0+ Clock speed: 48 MHz Operating voltage: 3.3V I/O pin limits: 3.3V, 7 mA User I/O pins: 25 ...

We didn’t have a SAMD21-based Arduino available for testing before press time, but if you’ve got one handy and can replicate these experiments to verify the results, definitely let us know in ...

While newer Arduinos and Arduino compatibles (including the Hackaday.io Trinket Pro. Superliminal Advertising!) either have a chip capable of USB or rely on a V-USB implementation, the old fogies o… ...

For more information on the new Arduino Prototyping Set and Bootloader Shield jump over to the Kickstarter website for details and to make a pledge from $18. Source: Kickstarter ...