Building the Meat Sphere

[chicago_mike]

5532 works fine.

I'm keeping the VTL's in there for now.

But I am going to mess with the freq range caps. The pedal is cool. but just a little thin sounding.

[LaceSensor]

Try the green led and the right ldr.... Makes a difference!

[chicago_mike]

Even in the low end of the signal?

I'll give it a go...( gosh darn stubborn fella gotta keep tellin me to switch this and switch that....Harumph Harumph! ) 

[FuzzAldrin]

Ok ... so rotary postions

up/down is 2 positions
bandwidth is 3
range is 4
High,band and lowpass is 3 positions

Correct?

[Taylor]

Yes. 

[FuzzAldrin]

Thanks.
Well, I finished it up and I get only a clean signal when effect is on. Bypass works. The LED comes on and pulses depending on how I move some knobs. I don't appear to have any wet signal. Adjusting the knobs doesn't appear to do anything with the exception of the "blend" knob. When full CCW, its at about unity gain but the volume goes down as I turn it CW, and the volume dies off at about all the way dimed.
Used Tayda LM1458 chip too. Any thoughts?

[Taylor]

I would audio probe through the audio section of the circuit and see where the signal is shorting or not making contact.

[LaceSensor]

Thanks.
Well, I finished it up and I get only a clean signal when effect is on. Bypass works. The LED comes on and pulses depending on how I move some knobs. I don't appear to have any wet signal. Adjusting the knobs doesn't appear to do anything with the exception of the "blend" knob. When full CCW, its at about unity gain but the volume goes down as I turn it CW, and the volume dies off at about all the way dimed.
Used Tayda LM1458 chip too. Any thoughts?

ITs the tayda chip id bet money on it
try a 5532 or any other dual op amp and see if you get envelope...

[mthibeau]

ITs the tayda chip id bet money on it
try a 5532 or any other dual op amp and see if you get envelope...

I have to 2nd that, all 3 of the LM1458 I got from them did not envelope. A spare 5532 I had worked, then I bought a MC1458 (NOS) on Ebay and it worked fine.

[alanp]

Got some LM1458 chips straight from Mouser (not tayda). Worked first pop.

[FuzzAldrin]

Thanks guys, I will try another chip and report back. 

[MickeyP73]

Aargh, I think I made a terrible mistake. I've soldered three rotary switches on the wrong side of the board.

Can I just continue and put the fourth on the same side as the three are now, or will the circuit not work? Desoldering them will be difficult. Removing by any other means as well (any tips?  )

Any help is appreciated. I guess I learned to never solder when you're tired.

[Govmnt_Lacky]

Better invest in a desolder pump bro! 

[MickeyP73]

Thanks, yup, that was what I was afraid of. Desoldering a 15 pin switch is a pain, if at all practically possible. I'll try to cut the switches off some how and I can desolder the pins. Seems the best option, even though I will ruin the switches.

[Psychopath]

Aargh, I think I made a terrible mistake. I've soldered three rotary switches on the wrong side of the board.

Can I just continue and put the fourth on the same side as the three are now, or will the circuit not work? Desoldering them will be difficult. Removing by any other means as well (any tips?  )

Any help is appreciated. I guess I learned to never solder when you're tired.

Put this one in my "fail" box for the past couple months as it was not working. A bunch of questions but the most important is:

Will this work with the switches mounted "wrong" on the component side?



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Yes, since that type of switch has contacts that are symmetrical, it will work the same with the switches on the wrong side, except of course that the positions will all be backwards.

[MickeyP73]

  Whooohoooo, backwards positions, I can live with that. Thank you so much for digging that up, I didn't catch that!

[njkmonty]

can someone advise where exactly i place the locking tabs into the rotary switches?

i cant get my head around it!!!

[bcalla]

You need to place the tab in each switch so that the number of positions is limited as follows:
Bandwidth - 3
Range - 4
Up/Down - 2
Filter - 3

[njkmonty]

i noticed that in comparison to Taylor's picture on the first page, I didnt insert the alpha switches in the exact orientation as he did, should that be a problem?

[bcalla]

i noticed that in comparison to Taylor's picture on the first page, I didnt insert the alpha switches in the exact orientation as he did, should that be a problem?

No, that won't matter.