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Tone Generator

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A Pico, a potentiometer, a speaker, and a 4-digit 7-segment display make adjustable tones.

Source book: Learning MicroPython
Kit page: https://dmccreary.github.io/learning-micropython/kits/tone-generator/
Printable one-pager: tone-generator-one-pager.html

Features

  • Lab: Lab 1: Configuration File
  • Lab: Lab 2: Testing the Potentiometer
  • Lab: Testing the Speaker

Benefits

  • Free, open lessons: the Learning MicroPython textbook has the kit page, wiring, and MicroPython code.
  • Ready-made curriculum: 3 additional lab pages walk students through the build step by step.
  • Classroom friendly: built on a solderless breadboard or no-solder connectors.
  • Try before you build: an interactive MicroSim on the kit page runs in the browser.
  • Instant feedback: students see their code's results on lights or a display.
  • Budget: under $10.

Parts

  • Raspberry Pi Pico ($4) — Microcontroller
  • 10K Potentiometer — Input knob
  • Piezo Buzzer / Speaker — Sound output
  • TM1650 4-Digit LED — Display
  • 830-Point Breadboard ($1.10) — Breadboard
  • Micro-USB Data Cable ($2.50) — Power and programming cable