Hey, sorry for digging out this old thread. I just built the Celeste and included the Rate LED following the advice from this thread. At first I got the signal from Pin 7 (square) and that introduced a nasty clicking noise synchronous to the rate frequency. Out of curiosity I switched to Pin 1 (triangle) and the click noise is gone. 
I have no explanation for that, but I even prefer the look with the triangular signal so I don't really care. 
Just in case anybody else will encounter that problem. (I use a blue LED with a 15k resistor)
Apart from that, thanks a lot for that brilliant clone! The sound is incredibly nice.
I have no explanation for that, but I even prefer the look with the triangular signal so I don't really care. Just in case anybody else will encounter that problem. (I use a blue LED with a 15k resistor)
Apart from that, thanks a lot for that brilliant clone! The sound is incredibly nice.