Stompbox Rapid Prototyping

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Revision as of 06:12, 18 May 2011 by Eberdahl (Talk | contribs) (Cables For 1/4" Connections)

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Lab 3: Rapid Prototyping
Designed by Edgar Berdahl (and Esteban Maestre?)

Making an enclosure is time-intensive, so in the context of the workshop, we recommend exploring ideas and designs first in a rapid prototyping context.

Cables For 1/4" Connections

In many applications, it may be desirable to connect the audio converters of the Beagle Board to generic 1/4" audio cables. For example, a generic prior-art guitar stompbox would incorporate these elements, and it could be convenient for other applications as well. Since no appropriate, mass-produced cables are available, we show you how to make your own using elements from your kit.

The following image shows a female panel-mount stereo 1/4" audio jack connected to an 1/8" male, stereo audio plug that can connect directly to the Beagle Board. As shown in the figure, heat shrink covers the soldered connections to help prevent any short circuits. StompboxCompletedCable.jpg

First read instructions on how to use heat shrink tubing. The punchline is basically that you have to get the heat shrink over the wires before you make the soldering connections; however, you have to be careful not to heat the heat shrink tubing with the soldering iron because then you will not be able to move it over the connection later.

Here you can see what the connections looked like at the 1/8" male end after soldering but before the heat gun was applied to heat the heat shrink: StompboxBeforeHeatShrink.jpg

Important Note

Some small amount of the text and images here was taken from prior laboratory exercises for the course Music 250A. We regret that we do not know who contributed these elements, but these people are likely to include Wendy Ju, Bill Verplank, Michael Gurevich, and possibly more.

Stompbox 2011