cannablizing a zoom pedal

[Barcode80]

I work at a music store (i know you are jealous, product at cost!) and we recently junked a brand new ZOOM GFX-5 multi-effects processor that was faulty and that due to a mix up with the warranty we were unable to return. I am not equipped with the tools or the knowhow to troubleshoot a digital effects processor on a multi-layer board, so i took it home to strip for parts. aside from a CORNUCOPIA of useful electrolytic caps, the unit has those little LED display units (where bank numbers and effects settings and such are shown when the unit is functioning). I was wondering if anyone thought one might be able to use one as a state indicator. for example, in an a/b box, perhaps you could have it show "A" or "B" depending on which output the box was using. any ideas on if this is possible and if so, how to wire it?

[sir_modulus]

A picture would be nice, or at least a description of the bottom (pins, markings, etc..).

Cheers,

Nish

[RaceDriver205]

Yeah, 7-seg displays are cool. You can work out how they're wired by using a 9V battery with a 10K res attached to the + terminal, and then randomly touching the -ve terminal and the other end of the resistor to various pins, and seeing what lights up.

[Barcode80]

cool thing is, the pedal included one dual 7-seg display and THREE dual 14 seg displays!!! and it also has at least 10 each of 10uF, 47uF, 1uF, and .1uF electrolytic caps! saves me a significant amount of mail order...

i'll try that thing with the battery and resistor. in terms of activation, though, how do you think i would light them dependent on state? could i wire up a millenium bypass and replace the led with a joint of all the segs i need lit for each?

[Barcode80]

okay, i just about stripped the board except a couple o odds and ends, here is what i ended up with:

(2) 2.2uF Elec. Caps
(4) 22uF Elec. Caps
(14) 10uF Elec. Caps
(7) 100 uF Elec. Caps
(6) 1uF Elec. Caps
(3) 47 uF Elec. Caps
(3) .1 uF Elec. Caps
(1) .22 uF Ceramic Cap
(9) Red LED's (not including the 2 i left on and the few i fried )
(19) momentary microswitches (not sure what i can actually use them for, 6 more still on board)
(6) potentionmeters (SUPER small, need to identify values still)
(2) rotary switches
(2) dual 14 seg LED displays (there were three, one didn't desolder so well and broke)
(1) dual 7 seg LED displays
(4) input/output jacks
(1) 1/8" mono jack
(1) 10k side-post trim pot
(1) 4xAA battery enclosure (not sure if it is a better idea than the 1 nine volt)
(1) .0082 uF Poly film Cap
(1) .0047 uF Poly film Cap
(1) .0022 uF Poly film Cap
(1) .01 uF Poly film Cap
(1) 68 pF ceramic cap
(1) 1N4004 Diode
(7) cool knobs from the pots and one of the switches

i'vegot lotsa parts now! now if i can just get my brain wrapped around transistors...

[bancika]

4x1.5=6V, just a thought

[Barcode80]

whoops, heh. my math got all screwy....