Arbitrary Waveform Generator Arduino

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.

Arbitrary waveform generator arduino.

My generator produces an amplified signal and also a unamplified high quality signal. The data values should be in decimal whole numbers in the range 0 to 63. Finally let s prove that we can produce arbitrary waveforms. There are a few example wave files in the arbitrary waves folder just for fun to help you get started.

Arbitrary waveform data should be created as a csv file containing one column of data with length 128. Dac output circuitry for an arbitrary waveform generator. The code above is the basis for an adruino due powered arbitrary waveform generator that meets the stated requirements. 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.

Building a very basic arbitrary waveform generator is actually quite simple using a digital to analog converter dac chip and a microcontroller mcu. 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. Arduino due arbitrary waveform generator. As well as the gui program the arduino waveform generator can also be controlled by arduino s serial monitor set to 115200 baud.

Powerful waveform generators are available commercially but it is relative. Things used in this project. This is my arduino based waveform generator using a 8 bit resistor ladder dac. 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.

It may be to test an amplifier check out a circuit a component or an actuator. These values when loaded to the arduino uno are converted to hex values between 0x00 and 0x1f and output as arbitrary waveforms. For general usage you can pretty much use any dac chip. Microcontroller design for an arbitrary waveform generator.

Here i will show you one such waveform generator using linear technology s ltc1450 dac and atmega328 programmed with arduino libraries. There is a lcd built in that shows the current. Next up a camera and lighting rig to capture drop formation in microsecond time. In the lab one often needs a repetitive signal of a certain frequency shape and amplitude.

Beginner full instructions provided 18 926.