Once your mask is done and the Circuit Playground Express is programmed, you can add all the electronics to the mask!

The CPX board slips right into the filter pouch. You can carry the AAA battery pack in a pocket, or use the belt clip to attach it to a piece of clothing.

Make sure it won't snag on anything as you walk around. You may want to thread the extension wire down into your collar and under your shirt.

Don't use a LiPo or any battery that attaches directly to the CPX for this project. For safety, use an extension wire and keep the battery away from your face. If you feel the CPX board start to heat up, turn off the battery and remove the mask immediately.

Attach the JST extension wire to the battery pack. If it's not long enough to reach from the mask to wherever you are going to carry the battery, attach a second extension wire to the first.

Slide the end of the extension wire through the opening you left in the bottom seam. Thread it into the pouch and connect it to the CPX board.

To test it out, position the CPX in the middle of the mask, with the wire pointed towards the side its threaded through. In other words, the board will be sideways, with the lights positioned at the top and bottom.

Try on the mask and adjust the board so it sits over your mouth.

Then turn on the batteries and say something to see how it works!

The CPX board stays in place pretty well, but if you want to attach it to the mask and still remove it easily, use peel-and-stick Velcro dots on the back of the board and the inside of the mask pouch.

This guide was first published on Jul 03, 2020. It was last updated on Jul 03, 2020.

This page (Add the Electronics) was last updated on Oct 15, 2021.

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