cool reverb apart from switch spdt 'pop' issue

[quad]

Thank you all for the information.

[quad]

-
-
Almost ready to hook it all up. Waiting for the Belton module to arrive. I also swapped the heatsink'ed 5v regulator with a smaller one to save space.
Would it be okay to hook +9v in the current situation? I'd like to measure how the power supply section is operating before I hoop up the Belton module.

[deadastronaut]

patience, patience....wait till you've got your brick .

looking good, cool use of IDE leads...good idea.

better v.reg too..

[Jdansti]

^^
I use the IDE leads on some of my builds too, but I've had problems with the wires breaking at the PCB. I've resorted to using hot glue for strain relief. Have you had any problems?

[R O Tiree]

@quad - Have you tested after soldering that you have no solder bridges? It's notoriously difficult to avoid them with isolation routing unless you did a solder mask as well. I'd take the opamp out, put one probe on the GND plane and touch each trace in turn to check. The regulator should be protected by the diode across it.

[quad]

^^
I use the IDE leads on some of my builds too, but I've had problems with the wires breaking at the PCB. I've resorted to using hot glue for strain relief. Have you had any problems?

This is my first time using IDE cables. They do look sturdy enough to do the job. I'll try not to bend and mess around with them too much, but gluing in such a situation would be a pretty good solution though.

@quad - Have you tested after soldering that you have no solder bridges? It's notoriously difficult to avoid them with isolation routing unless you did a solder mask as well. I'd take the opamp out, put one probe on the GND plane and touch each trace in turn to check. The regulator should be protected by the diode across it.

Sure did. I traced every line carefully to make sure there aren't any bridges and that the connections are solid.

[R O Tiree]

Excellent - fingers crossed then

[deadastronaut]

@quad..


stop waiting for the postman...

[quad]

Well, the post man has finally arrived. I used my frankenstein testing unit and it does sound great! I might upload some demo's when it's cased up and finished. The 6 pin terminal socket is probably going to be taken out due to size. There's no need to have that. The BTDR module does fit perfectly on the board anyway.

[deadastronaut]

I might upload some demo's when it's cased up and finished.

please do...


its alive....its alive....,..

[chromesphere]

Thinking of knocking up one of these just wanted to confirm with you Rob, it was designed for the 'long' delay of the belton?

Also, i will probably end up doing a demo of the pedal etc.  is R O Tiree selling fabricated boards?

Cheers,
Paul

[R O Tiree]

I can do - I'm making 3 for markeebee at the moment.

[bluebunny]

Thinking of knocking up one of these just wanted to confirm with you Rob, it was designed for the 'long' delay of the belton?

Yep.  I asked the same question.   

[deadastronaut]

yep the long btdr-2h...

[selfdestroyer]

I built this tonight from deadastronaut's PCB transfer and it sounds exactly how I wanted/hoped for it to sound. I found by messing with R13 I was able to go from the default feedback with the 33k to some really cool sounding oscillation at 22k. With this tweaked I was able to get infinite-like reverb. I DPDT a 33k 22k 18K to switch it around. I might even look at adding a expression pedal output for R13.. Might be fun.

I noticed that I am getting quite a bit of a volume boost when turning on the reverb and was wondering if there was a way to add a "gain" pot to this or to bring it to a utility gain? I saw something a few pages back about a R11 mod for a volume boost but was able to figure out any more info on it. I compared the 2 posted schematics but could not figure out how R11 would help. Thanks again deadastronaut for your PCB transfer.

[deadastronaut]

hi self :
cool glad you built it, and verified the layout too.

yep, that 33k to 22k is worth messing with if your an oscillation junkie...i'll do that to mine eventually..

to bring it to unity you could stick a trimmer on the out so you can set n forget it, rather than another hole/pot...ive done this to a few pedals that were louder than unity too.

that'll sort it.

[selfdestroyer]

hi self :
cool glad you built it, and verified the layout too.

yep, that 33k to 22k is worth messing with if your an oscillation junkie...i'll do that to mine eventually..

to bring it to unity you could stick a trimmer on the out so you can set n forget it, rather than another hole/pot...ive done this to a few pedals that were louder than unity too.

that'll sort it.

Thanks I will try that tomorrow .. since its 3:38am here and I need to get up at 7:30am for work.. haha I just really wanted to hear this thing in action.

[deadastronaut]

burning the midnight oil eh....we all do that.

goodnight then..

[chromesphere]

Finished this one on the weekend.  What can i say...Really nice reverb...When you start to crank up the reverb there is a whole spectrum of overtones going on in the reverb effect, it almost sounds like a shimmer. I also added that oscillation mod for a bit of versatility.

Im going to record the demo / build report tonight and upload over the next few weeks.  Just wanted to share my total satasifcation with this effect.  I'm difficult to please these days, this one was a total success!


Paul

[R O Tiree]

I must have missed the discussion about the volume boost. Paul, Rob, selfdestroyer, quad, what would you like to see on the board to cater for this? Space for a trimmer, hard-wired voltage divider or pot? Thinking about it, I could provide pads that could be used for any of those methods.

So, which would be best? Make R8 or R9 adjustable? Vol pot? Your judgements, please?