Arduino Arbitrary Waveform Generator

It may be to test an amplifier check out a circuit a component or an actuator.

Arduino arbitrary waveform generator.

Building a very basic arbitrary waveform generator is actually quite simple using a digital to analog converter dac chip and a microcontroller mcu. My generator produces an amplified signal and also a unamplified high quality signal. It outputs four waveshapes. Here i will show you one such waveform generator using linear technology s ltc1450 dac and atmega328 programmed with arduino libraries.

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. Arduino due arbitrary waveform generator. For general usage you can pretty much use any dac chip.

Microcontroller design for an arbitrary waveform generator. There are a few example wave files in the arbitrary waves folder just for fun to help you get started. The data values should be in decimal whole numbers in the range 0 to 63. Dac schematic design for an arbitrary waveform generator.

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. The frequency pulse width and overall amplitude gain of the waveforms is controlled by three potentiometers. Powerful waveform generators are available commercially but it is relative. Arbitrary waveform data should be created as a csv file containing one column of data with length 128.

These values when loaded to the arduino uno are converted to hex values between 0x00 and 0x1f and output as arbitrary waveforms. In the lab one often needs a repetitive signal of a certain frequency shape and amplitude. 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.

Sine triangle pulse and saw each waveshape ranges in frequency from 1hz 50khz. 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. This waveform generator is powered by an arduino. Dac output circuitry for an arbitrary waveform generator.

Things used in this project. There is a lcd built in that shows the current.