In this video take a look at the SI5153B and try get it to produce an FM modulated audio signal. These ICs are clock generators however with a little tinkering they can make a cheap and effective local oscillator in radio receivers and transmitter projects.
The FM deviation I manage to produce from this IC isn't any good for wide band broadcast FM however it worked reasonably well for narrow FM for voice.
There is a lot more resource and library information that can be found at GitHub.
Link github.com/etherkit/Si5351Ard...
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Arduino SI5351B .ino zip file complete with header and source files.
Note: I found that the VCXO functionality didn't work properly with the library found in the Arduino library manager at the time of making this video so I have included the correct header and source file in this zip file. Also make sure they unpack in the same folder and you have Wire.h installed.
drive.google.com/file/d/1GCIY...
Circuit diagram of breakout board. Note: I am still developing this so it may change.
drive.google.com/file/d/1XwX9...
Clock IC used in the project.
Note: Care needs to be taken in order to get the correct IC, this is the link to the one I used from Digikey that works.
www.digikey.co.uk/en/products...
Crystal used in project.
www.digikey.co.uk/en/products...
25 апр 2023