Hello,
I'm a first time user of the arduino and have purchased both a UNO and a NANO.
I'm trying to do pretty much the same as the OP and was wondering if the OP had made any progress on this project at all. I've made some progress in getting the TEA5767 working with an adjustable sweep by using a 10k potentiometer. However, like the OP I am a bit stumped how to get a reverse sweep and also a random sweep.
I plan to use an ON-OFF-ON toggle switch for this but unsure of the way to write the code to get it working.
If anyone or even the OP could get back to me as I know this is thread is now a few months old i woukd be very grateful.
Many Thanks.