Im newbie. I buy AD as like at the picture. Im try to connect AD to my UNO: ***. Using digital pins 8 through 11, proto shield installed. 1 Using the Analog Devices AD DDS with an Arduino board; 2 Initialising and Resetting the AD; 3 Setting the output frequency. I have paired may AD with an Arduino Uno, LCD display, Rotary encoder, and a few other small parts and have put together a very descent DDS VFO.

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Thank you, sorry to have bothered you. The AD is a chip that can produce a sinusoidal wave from about 1hz to 40mhz.

AD + Arduino Uno (ProblemPlease Help)

Ok, I have retested again with the code lines and now it seems to be all right! However, you it can be made to work with the shield. Is there an easy way to solve this in the code?

These are an inexpensive chip.

Please help me to make correction whats wrong with my schematic of my sketch. Drops the voltage to about 3.


Can you advice on how I can achieve this starting from you design. The root of the problem is that you loaded TWO sketches.

AD9850 Arduino

Hope I am not demanding too much from you. Please, could u help me solving the issue with a file. Make sure the rotary library is included in the Arduino Library. Using the existing two switches and adding an I2C DAC to make the sweep voltage it should be possible to program into the existing setup a menu for VFO and another menu agduino Wob.

Unfortunately without a more detailed explanation I am not sure arduno to do. I used the schematic for arduini from your site. The square wave’s duty cycle is adjusted with a pre-set potentiometer on the module itself. Received several lines of errors the first of which says:. And pardon me for maybe an obvious question, this is not a complaint, you have a very good program and appreciate it.

In theory, integer maths should be slightly faster and more accurate as the required frequency increases, in practice I find either method fast enough and accurate enough up to 30MHz, frequency errors are due to the poor stability of the reference oscillator on the DDS module.


All so far so simple, pretty much the same as you’d see with AD drivers. I had enabled arduino through the firewall and antivirus program when first installing it. Ebay is your friend.

Nobody can help you, as long as you don’t understand what you are told: I did check the posts and the only thing I can find is September 30, Fix this next time with 9V into arduino from the 78L It works for me Nikki. I loaded the folder with the files rotary. Thanks for all your fine work on this, Rich!

AD Arduino – Webshed

So reads 7, hz etc. It works perfectly well at Arduino UNO 73!

Save the sketch under a new folder with a new name. Adjust the zeros below.


The Arduino provides the 5V on a pin. From your schematic you have the data line from Ardunio on the module going to the pin10 on the Arduino.

Will you project do the following: