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external footswitch mod for Rat 2
ebomb321
post Nov 3 2009, 02:14 AM
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Hi All,
im new to guitarzone.com, im looking forward to contributing as much as i can =D

i have just ordered a mod kit for my proco rat 2. i was wondering if anyone has ever tried to remove the footswitch from the pedal and used an external footswitch to control this unit.
i have a g-major and a midi footboard which both support external switching of a device.
im going to start ripping apart this rat 2 when the parts come in but any input anyone has before i start would be appreciated.
thanks in advance!!
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kurtlives
post Nov 3 2009, 11:03 AM
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If you know a bit about relays you could implement external switching fairly easy.

Use a 9V DPDT relay to bypass the circuit. One coil goes to 9V+ the other coil goes the tip of an isolated jack. Then you can wire up an external footswitch with a SPST to tie the tip to ground (grounding the other coil). Youd also want to add a switch diode across the coils as well as a cap to reduce switch noise and transisents.

You can add an LED by putting it across the coils along with an approirate dropping resistor.

This post has been edited by kurtlives: Nov 3 2009, 11:04 AM


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ebomb321
post Nov 3 2009, 06:40 PM
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QUOTE (kurtlives @ Nov 3 2009, 11:03 AM) *
If you know a bit about relays you could implement external switching fairly easy.

Use a 9V DPDT relay to bypass the circuit. One coil goes to 9V+ the other coil goes the tip of an isolated jack. Then you can wire up an external footswitch with a SPST to tie the tip to ground (grounding the other coil). Youd also want to add a switch diode across the coils as well as a cap to reduce switch noise and transisents.

You can add an LED by putting it across the coils along with an approirate dropping resistor.



thanks! im going to try it. i have to pick up the pedal from my rehearsal space but i figure while i mod it, i should do this.
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kurtlives
post Nov 3 2009, 09:33 PM
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Cool.
You could even keep the standard DPDT footswitch and use it bypass the effect without the footswitch. Just use two poles to manually shunt that coil to ground.


--------------------
Let the pretend take over
And that season be the first
Shadows we're in become us
So we set up interspersed
Between here and away
Become your space every day


Check out my New DIY Site! (work in progress)
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ebomb321
post Nov 5 2009, 01:59 AM
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thanks again for the reply. i grabbed the pedal today but its a 3PDT switch. do you know how i would go about doing this? i can take a pic of the switch and wiring if needed.
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