Old Pueblo Engineering Center
Founded 2006 in Tucson, AZ. to explore Human/Robot Interactivity
“Drilling Brains for a New & Better Use of Technology”
Patents Pending


Ready-2-Play Robotics
5t4nd1ng @ th3 3dg3 0f 5p3ct4t10n!

Give a child a toy and they're happy for an hour.
Teach a child how to make their own toys, and they're happy for life!

Sending BIT Data to an External Device

A piezoelectric speaker (sometimes colloquially called a "pizo") or buzzer is a loudspeaker that uses the piezoelectric effect for generating sound. The initial mechanical motion is created by applying a voltage to a piezoelectric material, and this motion is typically converted into audible sound using diaphragms and resonators. Source: Wiki

Here we are toggling a bit port ... one pin on the MCU chip/module and the frequencey we toggle that pin is how we create tones in the speaker.

A math assignment might be calculating how many toggles/cycles of the PIN it takes for each note of the scale.

click to magnify the image

With a Frequency Counter or Oscilloscope you can see the exact output!