There's a special mini button labeled RESET right below the microcontroller. This is the, well, reset button. It will perform a clean restart of the microcontroller or let you start the bootloader by hand.


To re-start your Circuit Playground (basically, same as turning it off and back on again) - click the reset button once. The Circuit Playground will restart itself.

Bootloader Mode

To start the Circuit Playground bootloader - click the reset button twice. The bootloader will run for 10 seconds during which time you can upload new code. You shouldn't have to do this unless something got a little confused in the 'Play, but its an essential skill! During bootloader mode, the red #13 LED will breate on and off once a second.

It's good to practice both resetting (single click) and bootloading (double click). Check the Power Up test page for more details.

This guide was first published on Jul 19, 2016. It was last updated on Oct 22, 2017.

This page (Reset Button & Bootloader) was last updated on Jul 16, 2016.

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