16-10-2016, 04:27 PM
i'm experimenting with an at.tiny85 pcb and a AD9833 pll pcb. connecting these 2 tiny pcbs together and flashing some code into the atTiny85 and it can generate any frequency from a few hertz to 12 MHz ! triangle, sinewave or squarewave.
the current application is to replicate a 1.647MHz crystal in the Codan 8528 transciever to add lower sideband, and it works !
so, instead of $70 from HYQ its just 10 bucks from ebay.
instant crystal!
73 Dave
I must add, dont trust the onboard 5 volt regulator on the atTiny85 pcb, the version with the micro usb socket on it for programming, as it shoves 7 volts into the PLL when connected up to 12 volts.... found out the hard way.
the current application is to replicate a 1.647MHz crystal in the Codan 8528 transciever to add lower sideband, and it works !
so, instead of $70 from HYQ its just 10 bucks from ebay.
instant crystal!
73 Dave
I must add, dont trust the onboard 5 volt regulator on the atTiny85 pcb, the version with the micro usb socket on it for programming, as it shoves 7 volts into the PLL when connected up to 12 volts.... found out the hard way.