I power my Circuit Playground with a micro USB cable and external battery.

This here is your standard A-microB USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your NETduino, Arduino Leonardo, Raspberry Pi (among other things).
$2.95
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A smaller-sized rechargeable battery pack for your Raspberry Pi or Raspberry...
$14.95
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However, if you want to make the project more portable, you can grab a lithium rechargeable battery and a switch that will fit nicely inside the case. Directions on that here.

This guide was first published on Apr 11, 2018. It was last updated on Apr 11, 2018.

This page (Powering the Tilt Trumpet) was last updated on Jan 23, 2021.

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