Circuit Diagram

Power Supply

Circuit Playground Express can use a variety of power sources, anywhere between 3V-5V is safe. This compact 2200mAh lithium ion cylindrical battery is excellent for powering projects like this. 

A set of 3 AAA batteries also provides ample power, if that option is more convenient. If you're using a AAAx3 battery pack, check that the switch on the battery pack is set to "ON".

Adafruit Micro Lipo - USB LiIon/LiPoly charger

PRODUCT ID: 1304
Oh so adorable, this is the tiniest little lipo charger, so handy you can keep it any project box! Its also easy to use. Simply plug in the gold plated contacts into any USB port and a...
$5.95
IN STOCK

Lithium Ion Cylindrical Battery - 3.7v 2200mAh

PRODUCT ID: 1781
Need a big battery for your project? This lithium ion battery contains a 2200mAh and a protection circuit that provides over-voltage, under-voltage and over-current protection. Yet, it...
$9.95
IN STOCK

- OR -

3 x AAA Battery Holder with On/Off Switch and 2-Pin JST

PRODUCT ID: 727
This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about...
$1.95
IN STOCK

Alkaline AAA batteries - 3 pack

PRODUCT ID: 3520
Battery power for your portable project! These batteries are good quality at a good price, and work fantastic with any of the kits or projects in the shop that use AAA's. This is a...
$1.50
IN STOCK
This guide was first published on Aug 28, 2019. It was last updated on Aug 28, 2019. This page (Circuit Diagram) was last updated on Jan 20, 2020.