Analogue-sequencer

Hi Steve, 

> 1) I believe that the PLED I have is failing. This display will
> occasionally display nothing without a power cycling, usually doesn't
> display a second row, seems to have fading at the edges of the
> display, and the pixels seem smaller than usual. Can any of you
> confirm that this is the behavior observed when your PLED(s) failed?

Is that a new part, or one that's been sitting for a while but hasn't been
used ?

> 2) On the construction page for the v1.5 mainboard
> (http://www.sequentix.com/build/v1.5/cnst-main.htm), implementing MIDI
> sync requires replacing D2 and D3 with 220pF caps in order to add a
> bit of capacitance to avoid false triggering. I did not have any 220pF
> parts available, so I used 330pF ceramic caps. Is this a suitable
> replacement, or should I use something else? I do have two ~110pF
> ceramic, if this is more suitable.

The value isn't critical, 330pF should be fine.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com