Spectrum Analyzer Kit

Reads a microphone through the ADC, runs an FFT, and shows a live frequency spectrum on an OLED.

Kit photo coming soon

 

Key Features

  • Uses the Raspberry Pi Pico RP2040

Key Benefits

  • Free, open lessons. The Learning MicroPython textbook has the kit page, wiring, and MicroPython code.
  • Classroom friendly. Built on a solderless breadboard or no-solder connectors.
  • Budget. About $14 (MAX4466 microphone about $1, 0.96" OLED about $4.40; Pico $4, breadboard $2, wires $1, USB cable $2).

Parts

Part (price)Role
Raspberry Pi Pico ($4)Microcontroller
830-Point Breadboard ($1.10)Breadboard
Micro-USB Data Cable ($2.50)Power and programming cable

Microcontroller listed first. Prices shown only where known; see the source book for quantities, wiring, and current prices.

About this kit: It has since grown into its own book.
Source: Learning MicroPython