Foot switch schematic???

[luko-man]

has anyone got one for me???

[ianmgull]

You're going to have to be a bit more specific...

[chi_boy]

[luko-man]

well to be more spesific it just needs to switch between 2 chanels of a noisy cricket that im gonna built with 2 channels.

[Ripthorn]

What kind of switching are you using?  Are you using relay switching?  If so, then that is really simple.  If you plan to use anything with logic or mechanical switches, then you could be in trouble (as in that would be hard to do while keeping it intuitive to the user).

[luko-man]

if relay swiching is simpler i will do that.

[oliphaunt]

I'm something of a beginner here, but to help I would need to see a schematic of exactly what you want to switch.

[Ripthorn]

I agree, give us a little more information as to exactly how to intend to switch between two channels, what the two channels are, etc. and we can help.  Relays are very simple devices and make for easy footswitching, but we need to know exactly what you are trying to do.  There is no such thing giving us too many details (okay, maybe there is, but I doubt you will go that far).

[luko-man]

well to be as detailed as possible it is two noisy cricket amps that i am building for a friend and i want to switch between the two of them. its not 2 amps its 2 channels.

sorry guys its as detailed as i can really go the schematic for the NK amp is here
http://www.beavisaudio.com/projects/NoisyCricket/DIY/NoisyCricket_Mark2_BuildGuide.pdf

[Ripthorn]

So let me see if I understand you correctly:  You intend to have two noisy crickets, and the first channel will be one of the noisy crickets and the second channel will be the other noisy cricket.  Is this correct?  Or is it that the first channel will be one noisy cricket and the second channel will be both noisy crickets at once?  Please by specific which option.  Either way the switching will be pretty simple, but the connections to the relay will be different depending on which of the above descriptions is correct.

[luko-man]

They dont cascade into one another, they just go from one to another.

[Ripthorn]

Then this will be really easy.  Get yourself a dpdt non-latching relay that operates at whatever voltage the noisy cricket will run on (I assume 9V).  Make sure it has a decent response time and low power consumption (~150mW).  Make sure you pay attention to which pin is which, as wiring them is more complicated than wiring just another dpdt stomp switch.  WHat you will have is the input signal and main output going to the connections that are analagous to the center lugs in a stompswitch.  Then you simply have the input and output from each amp going to the other sets of lugs.  Connect channel 1 to the normally contacted (unactivated) lugs and the channel 2 in and out to the set of normally open (activated) lugs.  Put +9V to the power pin of the relay and then you have the ground lug going to the footswitch via the jack.  When you stomp on the switch, it connects the -V terminal (ground) of the relay to ground, therefore activating the relay and switching from channel 1 to 2.  Unfortunately, I can't whip up a schematic right now to show you in pictures what I mean, but hopefully the above description is sufficient.  To recap, the actual footswitch schematic is a single stomp switch that simply connects -V lug of the relay to ground when activated and then breaks the connection when not activated.  This could be done with an spst switch, though I have actually found spdt stompswitches to work quite well.  If you add an LED on the footswitch, that gets a little more complicated, but not by much.

[luko-man]

okay man cheers for that i will definatly look into it when i build the amp