Arduino Arbitrary Waveform Generator

It outputs four waveshapes.

Arduino arbitrary waveform generator.

Arduino due arbitrary waveform generator. Powerful waveform generators are available commercially but it is relative. The frequency pulse width and overall amplitude gain of the waveforms is controlled by three potentiometers. In this article we will learn how quickly and easily we can build our own function generator using arduino this function generator a k a waveform generator can produce square wave 5v 0v with frequency ranging from 1hz to 2mhz the frequency of the wave can be controlled by a knob and the duty cycle is hardcoded to 50 but it is easy to change that in the program as well.

Dac output circuitry for an arbitrary waveform generator. Arbitrary waves can be drawn edited saved opened and uploaded to the due via usb or the due can run alone controlled by pots switches. Dac schematic design for an arbitrary waveform generator. These values when loaded to the arduino uno are converted to hex values between 0x00 and 0x1f and output as arbitrary waveforms.

Arduino due arbitrary waveform generator project tutorial by bruceevans. There is a lcd built in that shows the current. In the lab one often needs a repetitive signal of a certain frequency shape and amplitude. This waveform generator is powered by an arduino.

Building a very basic arbitrary waveform generator is actually quite simple using a digital to analog converter dac chip and a microcontroller mcu. Here i will show you one such waveform generator using linear technology s ltc1450 dac and atmega328 programmed with arduino libraries. Arbitrary waveform data should be created as a csv file containing one column of data with length 128. It runs with a sampling rate of 65536 hz and can create any whole number frequency from 1 hz to 30ish khz in sine wave sawtooth triangle and different ratios of square wave.

Learn how to make your own arbitrary waveform generator using an atmega328p a dds function generator ic an op amp a few passives and some hard work. There are a few example wave files in the arbitrary waves folder just for fun to help you get started. For general usage you can pretty much use any dac chip. The data values should be in decimal whole numbers in the range 0 to 63.

This is my arduino based waveform generator using a 8 bit resistor ladder dac. Arbitrary waves can be drawn edited saved opened and uploaded to the due via usb or the due can run alone controlled by pots switches. It may be to test an amplifier check out a circuit a component or an actuator. Beginner full instructions provided 18 926.

Sine triangle pulse and saw each waveshape ranges in frequency from 1hz 50khz. My generator produces an amplified signal and also a unamplified high quality signal.