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DIY Stompboxes => Building your own stompbox => Topic started by: brad on August 24, 2005, 07:19:48 PM

Title: Opamp via 9-pin serial cable?
Post by: brad on August 24, 2005, 07:19:48 PM
I'm a big fan of Joe's discrete opamp and have had a few unsuccessful attempts at fitting "daughterboard" type versions of it into commercial pedals.  This got me to thinking about whether it would be possible to wire the pedal's opamp pads to a D9 serial cable socket, and then have the discrete opamp housed in it's own enclosure externally.

However, would the length of cable add noise or sully the signal in any way?
Title: Opamp via 9-pin serial cable?
Post by: brad on August 24, 2005, 07:25:19 PM
A 15 pin printer cable would allow you to mount switches for diodes or various pots away from the actual pedal too, allowing you to do much more than space would typically allow inside the original enclosure.
Title: Opamp via 9-pin serial cable?
Post by: brad on August 27, 2005, 03:42:01 AM
okay, I guess no one is into this idea.
Title: Opamp via 9-pin serial cable?
Post by: aron on August 27, 2005, 12:33:53 PM
I think it might work if the cables were shielded. I haven't opened a 9 pin din. It might be kind of cool to have it so you can plug in different versions.

Interesting idea for sure.
Title: Opamp via 9-pin serial cable?
Post by: ddes on August 27, 2005, 12:38:24 PM
It'd be cool if someone made SMT versions of them.
I had the idea, but I can't solder that small.

The board would ofcourse be bigger then the chip, but still relatively small :)
Title: Opamp via 9-pin serial cable?
Post by: aron on August 27, 2005, 12:45:27 PM
Yeah, then encase in epoxy and then you get the latest version of the "ice cube"!