Thanks to mcalleia for using our technical forums to troubleshoot your issue and for sharing these photos and videos with us! In the picture above you can see the “Hello World!” as well as the ‘Lady Ada’ patch earned from this project!

Gave the kiddo a challenge to use an Arduino and piezo buzzer to communicate “Hello World!” in Morse Code. Kiddo wrote a sketch (with some help, being 6 yo) and wired up our Arduino (with almost no help), and earned her ‘hello world’ programming patch, but we ran into a problem.

The sketch runs, and the buzzer buzzes on and off in dots and dashes for a while, then it kind of just buzzes in a lower frequency.

Here is the sketch and how we wired it up: https://circuits.io/circuits/4718753-li

We tried with and without a 1k resistor, same thing happened in both cases.

Check out the forums post here and see Hello World! in action below

Featured Adafruit Products!

Small Enclosed Piezo w/Wires; This small (14mm diameter) piezo element is nicely enclosed so you can attach easily. Piezo elements convert vibration to voltage or voltage to vibration. That means you can use this as a buzzer for making beeps, tones and alerts AND you can use it as a sensor, to detect fast movements like knocks. You can also use it under a drum pad to make a drum/crash sensor. Read more!