# Wearable Piezo Tones with Flora ## Build it http://youtu.be/K_RT7hYFLB4 A piezo transducer can play a tone when supplied with a square wave signal. Using one of Flora's PWM pins, we can supply a square wave of varying frequency and duration to play melodies-- a wearable music machine! [You can also adapt this tutorial for Gemma, check out our singing hat tutorial: https://learn.adafruit.com/close-encounters-hat/prepare-sensor-and-piezo-buzzer](../../../../close-encounters-hat/prepare-sensor-and-piezo-buzzer) ![](https://cdn-learn.adafruit.com/assets/assets/000/003/701/medium800/flora-piezo-materials.jpg?1396800821) For this quick project you'll need: - [Flora main board](https://www.adafruit.com/products/659) - [Flora RGB Smart Neo Pixel](https://www.adafruit.com/products/1060) - [Battery holder](http://www.adafruit.com/products/727) - [Piezo transducer](http://adafruit.com/products/160) - [JST extension cable](http://adafruit.com/products/1131) - [Magnetic pin back](http://adafruit.com/products/1170) As for tools, you'll need a [USB cable](http://adafruit.com/products/260), [soldering iron](http://adafruit.com/category/8_84 "Link: http://adafruit.com/category/8\_84") and [flush diagonal cutters](http://adafruit.com/products/152). Helpful tutorials: - [Learn how to solder](http://learn.adafruit.com/adafruit-guide-excellent-soldering "Link: http://learn.adafruit.com/adafruit-guide-excellent-soldering") - [Getting Started with FLORA](http://learn.adafruit.com/getting-started-with-flora/) Insert the legs of the piezo into holes marked D9 (or any PWM-capable pin) and GND on the Flora. ![flora-piezo-insert.jpg](https://cdn-learn.adafruit.com/assets/assets/000/003/702/medium640/flora-piezo-insert.jpg?1396800841) Solder the leads of the piezo and clip off the extra wire with flush snips. ![flora-piezo-solder.jpg](https://cdn-learn.adafruit.com/assets/assets/000/003/703/medium640/flora-piezo-solder.jpg?1396800857) Peel off the adhesive protection and affix the metal bar from the magnetic pin back to your Flora. Now you can easily affix it to your clothes! Use a JST extension cable to lengthen your battery pack's wires so you can tuck the power pack in your pocket. ![flora-piezo-magnetic-back.jpg](https://cdn-learn.adafruit.com/assets/assets/000/003/704/medium640/flora-piezo-magnetic-back.jpg?1396800878) # Wearable Piezo Tones with Flora ## Program it Program your Flora with the following code. It is a modified version of [Tiago Gala's code](http://therandombit.wordpress.com/2011/11/21/arduino-piezo-speaker-super-mario/) to play the Super Mario Bros theme on the piezo, hence some of the Portuguese variable names. It will play the theme once upon startup: ```auto #define toneC 1911 #define toneC1 1804 #define toneD 1703 #define toneEb 1607 #define toneE 1517 #define toneF 1432 #define toneF1 1352 #define toneG 1276 #define toneAb 1204 #define toneA 1136 #define toneBb 1073 #define toneB 1012 #define tonec 955 #define tonec1 902 #define toned 851 #define toneeb 803 #define tonee 758 #define tonef 716 #define tonef1 676 #define toneg 638 #define toneab 602 #define tonea 568 #define tonebb 536 #define toneb 506 #define tonep 0 int speaker = 9; long vel = 20000; boolean hasplayed = false; void setup() { pinMode(speaker, OUTPUT); delay(2000); } int melod[] = {tonec, toneG, toneE, toneA, toneB, toneBb, toneA, toneG, tonee, toneg, tonea, tonef, toneg, tonee, tonec, toned, toneB}; int ritmo[] = {18, 18, 18, 12, 12, 6, 12, 8, 8, 8, 12, 6, 12, 12, 6, 6, 6}; void loop() { if (hasplayed == true){ return;} for (int i=0; i<17; i++) { int tom = melod[i]; int tempo = ritmo[i]; long tvalue = tempo * vel; tocar(tom, tvalue); delayMicroseconds(1000); } delay(1000); hasplayed = true; } void tocar(int tom, long tempo_value) { long tempo_gasto = 0; while (tempo_gasto < tempo_value) { digitalWrite(speaker, HIGH); delayMicroseconds(tom / 2); digitalWrite(speaker, LOW); delayMicroseconds(tom/2); tempo_gasto += tom; } } ``` For more examples/info on using a piezo to make melodies, check out the [Arduino Play Melody](http://www.arduino.cc/en/Tutorial/PlayMelody) page. # Wearable Piezo Tones with Flora ## Wear it! ![](https://cdn-learn.adafruit.com/assets/assets/000/003/705/medium800/flora-piezo-main.jpg?1396800897) Place the magnetic part of the pinback inside your garment and affix the Flora to it on the outside. Tuck the battery pack in your pocket and enjoy your melody-making accessory! ## Featured Products ### FLORA - Wearable electronic platform: Arduino-compatible [FLORA - Wearable electronic platform: Arduino-compatible](https://www.adafruit.com/product/659) FLORA is Adafruit's fully-featured wearable electronics platform. It's a round, sewable, Arduino-compatible microcontroller designed to empower amazing wearables projects.FLORA comes with Adafruit's support, [tutorials and...](http://learn.adafruit.com/category/flora) In Stock [Buy Now](https://www.adafruit.com/product/659) [Related Guides to the Product](https://learn.adafruit.com/products/659/guides) ### Piezo Buzzer [Piezo Buzzer](https://www.adafruit.com/product/160) Piezo buzzers are used for making beeps, tones and alerts. This one is petite but loud! Drive it with 3-30V peak-to-peak square wave. To use, connect one pin to ground (either one) and the other pin to a square wave out from a timer or microcontroller. For the loudest tones, stay around 4 KHz,... In Stock [Buy Now](https://www.adafruit.com/product/160) [Related Guides to the Product](https://learn.adafruit.com/products/160/guides) ### 3 x AAA Battery Holder with On/Off Switch and 2-Pin JST [3 x AAA Battery Holder with On/Off Switch and 2-Pin JST](https://www.adafruit.com/product/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 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries and have an on-off switch. That makes... In Stock [Buy Now](https://www.adafruit.com/product/727) [Related Guides to the Product](https://learn.adafruit.com/products/727/guides) ### USB cable - USB A to Micro-B [USB cable - USB A to Micro-B](https://www.adafruit.com/product/592) This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or microcontroller Approximately 3 feet / 1 meter long Out of Stock [Buy Now](https://www.adafruit.com/product/592) [Related Guides to the Product](https://learn.adafruit.com/products/592/guides) ### JST-PH Battery Extension Cable - 500mm [JST-PH Battery Extension Cable - 500mm](https://www.adafruit.com/product/1131) By popular demand, we now have a handy extension cord for all of our JST PH-terminated battery packs (such as our LiIon/LiPoly and 3xAAA holders). One end has a JST-PH compatible socket, and the other end has a matching plug. Between the two, 500mm of color coded wire. Handy for wearable... In Stock [Buy Now](https://www.adafruit.com/product/1131) [Related Guides to the Product](https://learn.adafruit.com/products/1131/guides) ### Magnetic Pin Back [Magnetic Pin Back](https://www.adafruit.com/product/1170) These magnetic pin backs have two pieces: a metal bar with adhesive strip and a plastic piece with two strong rare-earth magnets. Affix the metal bar to your FLORA projects-- it's just the right size! Then attach your FLORA project to any garment without poking holes in your clothes. The... In Stock [Buy Now](https://www.adafruit.com/product/1170) [Related Guides to the Product](https://learn.adafruit.com/products/1170/guides) ### Getting Started with Adafruit FLORA [Getting Started with Adafruit FLORA](https://www.adafruit.com/product/1839) **Making Wearables with an Arduino-Compatible Electronics Platform** This book introduces readers to building wearable electronics projects using Adafruit's tiny FLORA board: at 4.4 grams, and only 1.75 inches in diameter, and featuring Arduino compatibility, it's the... No Longer Stocked [Buy Now](https://www.adafruit.com/product/1839) [Related Guides to the Product](https://learn.adafruit.com/products/1839/guides) ### Getting Started with Adafruit FLORA Book Pack [Getting Started with Adafruit FLORA Book Pack](https://www.adafruit.com/product/2404) Pickup a copy of [Getting Started with Adafruit FLORA](https://www.adafruit.com/products/1839) and then hit the ground running with everything that you need to become an [Adafruit FLORA](https://www.adafruit.com/products/659) supreme being! This pack is... No Longer Stocked [Buy Now](https://www.adafruit.com/product/2404) [Related Guides to the Product](https://learn.adafruit.com/products/2404/guides) ## Related Guides - [LED Stego Flex Spike Hoodie](https://learn.adafruit.com/led-stego-flex-spike-hoodie.md) - [Adafruit Flora Bluefruit LE](https://learn.adafruit.com/adafruit-flora-bluefruit-le.md) - [EEG Costume Cap](https://learn.adafruit.com/eeg-costume-cap.md) - [GPS Logging Dog Harness](https://learn.adafruit.com/gps-logging-dog-harness.md) - [Flora Snaps](https://learn.adafruit.com/flora-snaps.md) - [Chameleon Scarf](https://learn.adafruit.com/chameleon-scarf.md) - [VU Meter Baseball Hat](https://learn.adafruit.com/vu-meter-baseball-hat.md) - [Heart Rate Badge](https://learn.adafruit.com/heart-rate-badge.md) - [Light-Up Angler Fish Embroidery](https://learn.adafruit.com/light-up-angler-fish-embroidery.md) - [Sparkle Skirt](https://learn.adafruit.com/sparkle-skirt.md) - [Pac Man Pixel Suspenders](https://learn.adafruit.com/pac-man-pixel-suspenders.md) - [STEAM-Punk Goggles](https://learn.adafruit.com/steam-punk-goggles.md) - [Washing Wearable Electronics](https://learn.adafruit.com/washing-wearable-electronics.md) - [Wires and Connections](https://learn.adafruit.com/wires-and-connections.md) - [Colorful Creations with the New JLCPCB PCB Service](https://learn.adafruit.com/colorful-creations-with-the-new-jlcpcb-pcb-service.md)