VFE Mini Mu

[pedalbob]

I also noticed that in your build document you show the non-latching relay and single jumper ... I used the latching relay and 2 jumpers in my 3 builds.
Has anyone had success with the latching relay ?   

[pedalbob]

All out of things I could come up with to try ... and lack of suggestions from others ... so I finally brute forced this.  Ditched the VFE power supply/switching board and wired up a road rage to get the +9/-9 v.

Works great now 

3 VFE boards, components & shipping $40.00, Many hours of time and frustration $$$, roadrage board and components $7.50 ... pedal that finally works .... Priceless

I have some non-latching relays that I didn't use ... if I get bored maybe I'll try one of these on one of the 3 relay boards that won't switch to bypass ... or maybe I'll just stick to 3PDT from now on ... always was more of an analog guy 

[jimilee]

That was a pretty smart idea. Congratulations on getting it going.


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[pedalbob]

Here is a picture before I box it up again ...

[pedalbob]

 Not sure why my pictures don't upload now ...

Further update and last one by me on this thread ...

I replaced the latching relay with a non-latching relay on one of the boards along with swapping the jumpers to corresponding ones per build instructions and voila it works now as advertised !!

If I hadn't built 3 of these with 3 Panasonic Latching relays I bought from Mouser I may have suspected my original latching relay ...

My only conclusion from this whole exercise is that the circuit for the latching relays is NG *&*%$

Any one else building these go with the non-latching relays.

[jimilee]

Yep, with all my VFE builds.


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[gordo]

So is the non-latching function of the bypass board a no-go?  Brian is very thorough with this stuff, but you blew thru two boards, correct?

[pedalbob]

Yes I built 3 switching boards all with latching relays and they all did the same thing ... passed clean signal on initial power up and then when I switched to effect the 1st time it would never pass clean signal after that ...

Changed relay (and jumper) on one of the boards to non-latching and it works fine ... so I still have two that don't work and it is a royal pia to de-solder the 8 pin relay ...

[Itchy Scratcherson]

Hi everyone! Very frustrating there's no better solution other than not to use Latching relays. I'm in precisely the same boat with THREE VFE SPS circuits... I'll spare everyone my troubleshooting essay and summarize by saying the latching relay is not seeing voltage on pin1 and so it never switches. But when engaged the LEDs light and the 3 pedals sound great. I'll buy some non-latching relays OR add a traditional stomp switch.
Be well!
   ~Christopher