Zelda Echoes Of Wisdom Tri Rod

by Ruiz Brothers and Liz Clark

published October 08, 2024, last edited January 22, 2025

posted in LEDs 3D Printing Feather CircuitPython

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Project guide

Overview

Build the Tri Rod from Zelda: Wisdom of Echoes!

This project features motion activated LED animations and sound effects powered by CircuitPython and the Prop-Maker Feather RP2040.

Motion Activated

When the accelerometer detects a swinging motion, it triggers the LEDs to animate a random sound effect.

The accelerometer detects when the prop is vertical, triggering an idle state where the LEDs fades slowly.

PropMaker RP2040

This dev-board is our favorite go-to that’s designed for making prop projects. It’s got the RP2040 chip with a built-in audio amplifier and accelerometer!

A 2000mAh lipo battery will provide several hours of use and can be recharged over USB.

CircuitPython

CircuitPython has made our Prop-Maker projects easier than ever thanks to our new demo code and libraries.

Development boards with CircuitPython are great for props because they load just like a USB flash drive so you can easily edit code and drag and drop audio files.

We think this could be modified to work great with similar props like a wizard’s staff or a sci-fi space helmet.

Parts

Video of a white hand pressing a button to briefly turn an LED strip into white lights. Also wired up to the microcontroller are a servo motor and a speaker.

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Mini Oval Speaker with pico blade connector

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