How can i make this>

[sevenisthenumber]

http://cgi.ebay.com/Black-Label-Peavey-Classic-30-50-100-Footswitch_W0QQitemZ290247781064QQihZ019QQcategoryZ10171QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

[runmikeyrun]

probably need a schematic for the amp, then you need to get in there and figure out how it switches the channels.  Some use a momentary switch on a circuit to flip an electronic switch, others (usually older or cheaper amps) use a regular stomper to physically make or break a connection.  either way, usually the sleeve of the jack is connected to ground on the amp and the ring and tip each go to the switch of each corresponding channel. 

My peavey windsor has a stereo input jack for the footswitch w/ two switches in the box.  When i touched two of the prongs together w/ alligator clips (only advisable after you find out the voltage is low enough not to kill you) it switched the fx loop, two others it switched the boost in/out.  I only had to touch them, not keep them clipped together, therefore i could use momentary stomp switches.  Mine uses relays, i could watch and hear them flick over.

So, unless you're decent with amps and can identify the circuit looking at it/messing with it you will need schematic to figure it out.

Once you do though, its easy to make, two switches is all it takes!  Now if you want to add LED indicators... well... probably easier to buy the footswitch and re-house it.

[Rodgre]

Typically, I find that footswitches like this are just two switches that close between the two leads of a "stereo" 2-conductor cable and ground. Simple as that.

There are some, however, which do their work with zener diodes and can do some more complex stuff, but those are fewer than the standard two-button, two-conductor footswitches.

The only thing you might need to know is whether the amp is expecting a momentary connection or a make/break connection.

Roger

[Jered]

  Why don't you buy that one? Its going to cost $20 to build it.