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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AD Arduino – Webshed
aad9850 Now, sometimes, no matter which way I rotate the encoder, the frequency goes down. A coupling cap is required there must be some DC in the sine wave or something. Just picked up the rotary encoders on ebay for about a buck each. I am trying to make some changes in order to add some other functions and a sort of menu. Or can I assume the variance is really very small and can just be ignored?
Good luck on your project. But for normal operation i need two iffreq1e 10,7 mhz ; 2e 10,7 mhz minus khz Switched by button on pin A0 for the 2 states. Serial only seems to be used to enter some digits for the frequency.
An AD will arrive next month. Pravin, I do not have time, at present, to work av9850 the arvuino analyzer. You probably would need to run an Ardunino Mega to use two boards. I changed some of the code to cover lower frequencies, for a general coverage signal genalso replaced the periods with commas and Mhz to read hz. The fact that this thread has run for years is real testament to the success you have achieved.
Any idea of what I can do? My email evertonspeedyrage gmail. Charles was having problems because his Arduino was bad along with a faulty USB cable.
Familiar with schematics, but the Arduino is a whole new show for me. After my previous post I reloaded the sketch and received the following error- C: Not sure what to tell you.
However, a lot of people use it in their projects. Hi Rich, Could you please tell if there are any changes required in the sketch, if the AD is used instead of the AD? Direct input it absolutely possible. The frequency is fairly fixed no drift as it uses a crystal for the clock but ALL crystals drift over time. Hello, a few weaks ago i found a new Arduino shield. I did a blog post on it as ardhino.
Sorry but I have no idea what you are asking. Hi Rich, I will be very grateful if can you tell me how to change the code such that it can be used as a swept frequency antenna analyzer with appropriate LPF from a bank of Low Pass Filters etc. I built the VFO. I had used library manager to add all new libraries, seems it will add some but not all, even though it says the library had wd9850 installed.
Your setup is flawless! Watch the video of this build on my YouTube page and you can see the action of the switch. Is not more easy to generate sound directly with Arduino at Hz, and rorate a potentiometer who can change frecuency between to Hz, and after 3 seconds when you not rotate, sound stops?
All works fine, I noticed on your schematic that you use A5 for the mf selection, but I could not find afduino in the sketch. I forsee problems and would much appreciate your advice ie.
AD9850 DDS VFO
Hello I am not a professional coder but could build the generator about the instructions and working just fine. So reads 7, hz etc. Do you think this could be done, and do you think the existing display on the ffont of the could be retained, like to hear from youBrian.
Just need to have a way to plug in a key. I am new to arduino and am still playing around with the starter projects. This issue is more visible when you power the display directly from Arduino and USB cable and the rotary encoder send changes quickly to frequency display I use a stepper motor to af9850 50 positions on my dial knob. Hi Rich, Hope you still remember me. I can see this as a problem when trying to receive signals. In your sketch i can increase the rate of frequency change from 10Hz up to 1Mhz by using the encoder button.
I have not altered the sketch at all. Anyhow I like what you have here and let me know what you think. Sounds like you have a pin assignment problem. The newer Rotary library is loaded. Keep the IF and the non-IF sketches in separate folders when you load one of them into the arduino IDE you get duplicate declarations etc.
This is the coolest thing ever. One thing I was wondering, if anyone has found a good way to CW Key the output? Hi Rich, Thanks for your suggestions and I will try to learn some code programming.
I have a SW receiver that I built with the NE that uses khz and it would be awesome to have that add9850 in. Thanks for the swift reply.