I guess it is most likely that the problem is caused by a damaged PCB.
I started out with a bad soldering iron, and think I can have
destroyed the PCB by burning it. Well that was a way to practice
soldering. Maybe I will try again with a new PCB.
The offset error on the outputs is probably a common problem with the
ASR.
I started out with a bad soldering iron, and think I can have
destroyed the PCB by burning it. Well that was a way to practice
soldering. Maybe I will try again with a new PCB.
The offset error on the outputs is probably a common problem with the
ASR.
--- In cgs_synth@yahoogroups.com, "eyjolv" <karsteindjupdal@...> wrote:
>
> Hi.
> I just built the ASR. The first module I try to build myself.
> Unfortunately it is not working as it should. I hope someone will have
> an idea what is wrong, as I don't know enough about electronics to
> debug this.
>
> Here is what is happening when I route the outputs to oscillators:
>
> 1 - At one of the stages the oscillator glides slowly in pitch up to
> above audio, maybe settling on 10v or something. This happens on all
> outputs. The other three stages function ok. However...
>
> 2 - On the other three stages the pitch is about 2 semitones higher
> than input (getting slightly more flat on high notes).
>
> 3 - In addition to problem 1 and 2: out1 gives the same as input, out2
> is shifted one step, out3 is shifted two steps (i think this is wrong?)
>