Fidget spinners are fun toys that help relieve stress. They spin on a bearing, and can reach really high revolutions per minute (RPM). We are going to build a Tachometer, an instrument which measures RPM, for your fidget spinner.

We included some fun features into Tony D's original Circuit Playground fidget spinner code

Like a RPM high score game to compete with your friends (or to pit different spinners against each other)

And a countdown clock to let you time your spins better.

This guide was first published on Aug 18, 2017. It was last updated on Jul 19, 2024.

This page (PROJ04: Fidget Spinner Tachometer) was last updated on Jul 10, 2017.

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