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?Anyone have the fuse settings for the ATTiny 84 chip? I'm scratch building one using the?
SI5351 sych from QRP-Labs I have the HEX code but it doesn't work correctly I tried removing
the DIV8 and that seemed to help but still no joy.

Tnx? ?Joe wa9cgz

Anyone have the fuse settings for the ATTiny 84 chip?

Joe

At the bottom here are my notes, also read the link to Han's definitive explanation.

73 Alan G4ZFQ

Thanks Alan,

I'm using the Arduino serial display and now can get whats stored in each register setting
but when checking the SI5351 output only get 27 MHZ. What is the proper key sequence?
in order to get output it seems that this was over looked in the instructions? Is their any way
to use the serial monitor to force it to a selected output frequency?
?If I can get this device working I plan to us it on 2200 and 630 meters as a replacement for
xtals that I now use in a resistive SWR antenna tuner signal source to replace two units
with one.

Joe? wa9cgz

. What is the proper key sequence
in order to get output it seems that this was over looked in the instructions? Is their any way
to use the serial monitor to force it to a selected output frequency?

Joe,

The sequence is explained in the manual, I reckon I had to try several times before I got it right. Fill in Han's chart and take it steady.
The serial connection makes it easy to set the memories but again even after reading Hans' superb instructions It took a me few attempts. I do not remember for sure but I think you can only program the memories, not set the frequency on the run.

73 Alan G4ZFQ

On what page of the manual does it show or explane how to generate a frequency that you have programmed in?

Having just put one of these together I think the answer you are after is in Section 5 of the assembly instructions. The diagram on Page 12 shows the three output connections CLK0, CLK1 and CLK2. If you leave B0, B1 and B2 open then the frequencies programmed into Register 0 will be output. The other programmed frequencies in the other registers are available using a combination of connections of B0, B1 and B2 as shown in table 5.3 (Page 13). Incidentally I programmed mine using the serial cable method - very easy.?Hope this helps! Nigel VK6NI??

? Nigel,

Got it thanks
Even though I don't completely understand the readout from the Arduino serial monitor I was successfully able to program and load both frequencies?
I needed, Is their any way of resetting the entire e-prom? section from the serial connection?

Thanks again? ?Joe? wa9cgz