Conference napalm::guitar

    I can't answer your question, but my guess is that you don't know what
    the hard part of the problem is.  I tried to have EXACTLY the same
    thing built.
    
    The hard part of the problem will be getting switches that do the
    right things electrically (control both a light and a signal) *AND* 
    are designed to stand up to "stomping" with your foot. 
    
    I tried, and have all but given up.  Clearly such things exist.  Many
    companies that make stomp boxes use them.  I called up Morley and
    Boogie as exactly what I was needed was supplied with various pieces
    of Boogie and Morley equipment I own and they cheerfully gave me the
    names of their suppliers.
    
    Unfortunately, neither supplier was willing to sell me anything in
    the quantities you or I would be interested in. 
    
    However, I'm not familiar with electrical supply and I would love
    to hear that someone knows a place where I can get these things.
    
    I'd also appreciate diagrams and names for the parts and circuits
    you would expect I'd need (there seem to be about 3 or 4 common
    arrangements for foot-controlled things).
    
    	db

    BTW, Peavey sells a lot of the parts you'll need, but not the
    4-pole (or whatever it's called) switches you need to control both
    the signal and the LED.
    
    	db

	I believe you can build an electronic crosspoint
switch using relays or analog multiplexer chips. If you
"did it right" you could have 99 arbitrary combinations
of different effect devices. Your footswitch might have
5 favorite "preselected" patch combinations, and be able
to count up or down by tapping on a switch. And you'd
know exactly where you "are" by the 2 big seven segment
digits, which are displayed on the pedal.

	I believe players like Clapton and Belew haveh had
these devices built for them already -

	Joe
< Note 988.2 by DREGS::BLICKSTEIN "Yo!" >
                     -< Peavey sells a lot of this stuff >-

    BTW, Peavey sells a lot of the parts you'll need, but not the
    4-pole (or whatever it's called) switches you need to control both
    the signal and the LED.
    
    	db

    Craig Anderton's book "Electronic Projects For Musicians" contains
    schematics for an electronic bypass switch.  Its most significant
    feature is that it allows using an easily obtainable SPST footswitch
    to control both the bypass and the led.  also, the led and footswitch
    may be mounted remote from the effect - ie: the signal path does
    not follow the control wire.   It's easy to build and the parts
    are cheap (it uses a simple CMOS switch chip). A final feature is
    that it uses a series of diodes to effectively force the output
    to disconnect before the input is changed, thus avoiding pops and
    clicks.
    					joe

	The CMOS electronic switch is definitely the way to go.  The actual
	stomp switch is a simple (but rugged) SPST job that sends a control
	signal to the chip.  The only problem with DIY CMOS events is you
	have to be careful you don't blow the chip by incorrect physical
	handling (specially in high-static weather like now).

	I have the book and will be happy to xerox and interoffice mail
	anyone a copy of the circuit.  For fastest response, send me mail
	instead of replying to this note.

	/ravi

    re [.6] - I picked my copy up in San Diego, and many years ago at
    that.  It's published by Guitar Player Publications.  I'll get the
    ISBN & post it tomorrow.  If it's still in print you should be able
    to order it from one of the big book stores.  Unfortunately, I tore
    that page out of my copy in order to trace the PC pattern, and,
    of course, lost it (I was just looking for it this past weekend).
    If you are unable to find a copy of the book, I have a board already
    built & will try to re-create the circuit from that.  It's pretty
    simple & really shouldn't be too difficult.
    							joe

	Sorry people, I can't find my copy of Electronic Projects for
	Musicians.  It seems to have disappeared during a recent move.
	I will continue looking for it (it *has* to be around) and will
	post a note if/when I find it.  Sorry about this.

	/ravi

    I know of two sources to get the Electronics projects book. One
    is from PAIA Electronics and the other is Mix Bookshelf.
    
    PAIA Electronics, Inc.
    P.O. Box 14359
    Oklahoma City, OK. 73113
    (405)843-9626
    
    PAIA has not only the book (selling for about $15.00) but they also
    sell kits for the projects in the book. The electronic footswitch
    project run for around $20.00.
    
    Mix Bookshelf
    6400 Hollis St.
    Suite 12
    Emeryville, CA  94608
    800-233-9604
    
    Mix sells a lot of books and software and are pretty fast in delevering
    the goods. Price for the book is around $15.00.
    
    There is an older version of Craig's book with the same title. Both
    books have basicall the same projects in them although the newer
    version has a few more goodie projects like a phase shifter. The
    projects in the newer book are improved over the older ones also.
    
    I've built a number of Craig's circuits with good success. I haven't
    built the footswitch yet. Maybe if I combine all my effects in a
    rack mount enclosure I'll give it a shot.
    
    Hope this helps.
    
    Brad