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How to Avoid Using the Delay() Function in Arduino Sketches
TUTORIAL
21.556

How to Avoid Using the Delay() Function in Arduino Sketches

By Maker.io Staff

Delay() halts code execution, reading sensors, I/O pin changes, and serial output. Use these alternatives to allow other code to run in the interim.

PROJECT
47

How to Build an Air Quality Meter for Your Home or Office - Part 1

By Maker.io Staff

Decrease the chance of mold growth and contracting an illness while also increasing the comfort level indoors with this simple Arduino based air quality monitor.

PROJECT
565

Building an Arduino-Based Spectrum Analyzer - The Software

By Maker.io Staff

This last part of the series discusses how the project’s firmware calculates the FFT result from the collected samples and displays it on the LED matrix screens.

Building an Arduino-Based Spectrum Analyzer-The Theoretical Aspects
TUTORIAL
521

Building an Arduino-Based Spectrum Analyzer - The Theoretical Aspects

By Maker.io Staff

Use an ATMega328 Arduino Uno microcontroller to collect audio samples and detect prominent frequencies.

PROJECT
195

How to Interface an LED Matrix with the MAX7219

By Maker.io Staff

Create an Arduino-based spectrum analyzer and graphic equalizer to spice up your home sound system using LED matrices and a MAX7219 display controller.