Any waveform other than square?

Other Hardware Audio
1

Hi everyone,
I'm rather new in Arduino and I'm interested in making some sounds. I've found in the learning section the tone() function (is it a function or something else? Not really good with programming..), but that's a square wave. Are there other waveforms available? At least phasor or a triangle, so I can then create the rest?

Thanks,
Alexandros

2

With only one digital output you only have a square wave.

If you build a crude digital to analogue converter it is possible to get other wave shapes but then you won't be using the tone function.

3

Thanks for the answer. Do you have in mind any tutorial on how to do this?

4

Not particularly but try this:-
http://interface.khm.de/index.php/lab/experiments/arduino-dds-sinewave-generator/

5

You can build R2R ladder:
http://didier.longueville.free.fr/arduinoos/?p=977

6

Thanks guys!

7

or try this - SparkFun I2C DAC Breakout - MCP4725 - BOB-12918 - SparkFun Electronics - complete with sample code.

8

This is a full featured synthesizer with all kinds of waveforms, modulation, etc.

http://www.ginsingsound.com