Browse over 10,000 Electronics Projects using the Page Numbering provided at the bottom of each Page.

Maker creates a fun waveform generator with Arduino

Maker creates a fun waveform generator with Arduino

Inspired by a project he found over on Instructables, Maker JoEtuuube has created an Arduino-based waveform generator using an 8-bit resistor ladder DAC that can precisely produce different common waveforms at frequencies between 1Hz and 20Khz in sine-wave, sawtooth, triangle and various ratios of square wave. It features a speaker and a small LCD display.

A neat thing about the LCD is that it’s actually a reverse-engineered display from a cheap pocket calculator. With his hack, JoEtuuube no longer punches each digit in directly; instead, he only taps the clear, +, = and 1 keys. He can then enter arbitrary numbers by typing in the right number of ones and adding them up. For example, 345 = 111 + 111 + 111 + 11 + 1.

The generator itself uses an Arduino Uno and runs off a 9V battery. In the video below, JoEtuuube provides a detailed walkthrough of the firmware and how everything works. You can also read more about it on Hackaday.

 

More Articles to Read

Replace a microwave’s beeping with the Windows XP startup sound
Replace a microwave’s beeping with the Windows XP startup sound
A DIY Laser Scanning Microscope
A DIY Laser Scanning Microscope
Teleknitting: TV-based string art
Teleknitting: TV-based string art
Start your day with Nerf target practice!
Start your day with Nerf target practice!
Converting a coffee maker into a 3D printer
Converting a coffee maker into a 3D printer
Sort your M&Ms or Skittles with this ingenious machine
Sort your M&Ms or Skittles with this ingenious machine
The Hunt is both a playful game and tasteful home decor
The Hunt is both a playful game and tasteful home decor
The Rick and Morty Alarm will make sure you’re always on time
The Rick and Morty Alarm will make sure you’re always on time
Build your own MIDI accordion with Arduino
Build your own MIDI accordion with Arduino
A tiny orchestra of Lego Robots driven by Arduino
A tiny orchestra of Lego Robots driven by Arduino
8-bit Frogger game on a digital microfluidics device
8-bit Frogger game on a digital microfluidics device
An experimental game with a conductive rubber band controller
An experimental game with a conductive rubber band controller

Top




Shares