Circuit Diagram

Note the yellow clip is connected to pad A1. Pad A0 is usually dedicated to audio and is not used in this tutorial.

Powering the shark

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...
OUT OF 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

Assemble and Test

With your pieces not mounted yet, you may want to assemble the circuit, put the code on, and test.

When working, speaking into the Circuit Playground Express microphone will cause the servo motor to activate. If you put the one arm horn on the servo, you can see the movement easier. That is also the horn used in the actual build. The other various horns that come with the servo can be saved for another project.

This guide was first published on Jul 22, 2019. It was last updated on Jul 22, 2019. This page (Circuit Diagram) was last updated on Nov 05, 2019.