Building the tap tempo tremolo

[Eric.nail]

The dot is Negative?! What kind of jerk does that?! There's a dark corner of hell for people like that guy.
I just reordered another board. A buddy wants one too! ha! I'll swap the octo-coupler around and see what kind of results i get then if that doesn't take care of it i'll post you the voltages. Thanks for the replies man! top notch boards by the way! I'm really impressed with the construction. Very classy.

[bcalla]

Hi Taylor -
I ordered the board and chip back in May, worked on it off & on in the fall, and finally finished it.  I was worried after reading this thread, but it worked right away with no ticking!!  Great sounding pedal!  I took many ideas from the thread, including using rotary switches for the multiply and waveform knobs.  Thanks for a great board & chip, I'm thinking of building another for a friend of mine.
Bob C

[Taylor]

Glad you enjoyed it Bob. I pass the thanks on to Tom, Mike, Chris, and the others that made this project what it is. 

[bcalla]

Here's a picture.  It has a light metalflake which makes the picture look splotchy.  It's actually pretty subtle.

[Eric.nail]

Here's a picture.  It has a light metalflake which makes the picture look splotchy.  It's actually pretty subtle.

That's gorgeous! I need to figure out how to do the graphics...

[ElectricDruid]

Here's a picture.  It has a light metalflake which makes the picture look splotchy.  It's actually pretty subtle.

Hey, Gorgeous! Tripping on that one! Nice work!

T.

[GuitarTek86]

I just finished mine. great build! lots of fun! I can't seem to dial out the ticking on the half note and quarter note multipliers though. higher values on the multiplier are fine. swapped the opto once already. no change. using an NSL-32. any thoughts?

ps. these PBS's are SO nice! I purchased this one with an echo base PCB about 6 months ago. BEAUTIFUL boards! Best quality I have seen.

[roseblood11]

I just finished mine. great build! lots of fun! I can't seem to dial out the ticking on the half note and quarter note multipliers though. higher values on the multiplier are fine. swapped the opto once already. no change. using an NSL-32.

I've got the same problem. I tried 3 NSL-32's and a couple of other VTL's...

And I tried to tap the tempo for some weeks now, but I don't get it. It's always much too fast. Maybe the software debouncing isn't enough for some switches (It's a Carling "normally open" type)? Would adding a debouncing circuit around a 74hc14 help?

[Taylor]

IME a little finesse is required in tapping right. Taps need to be longer presses.

As far as ticking, I would go back to the first pages of the thread and see if any of the solutions there help.

[bcalla]

I didn't have to ELIMINATE ticking, but I did factor it in to my layout.  One of the posts mentioned that keeping the LED leads as short as possible so I positioned the board so that the LED solder pads were directly ove the LED hole.  To do that I used a PC mount pot only for the tempo twisted/rotated the pot placement to figure out where I needed to place the LED.  There is a gut shot below showing what I mean.  If you're wondering, the trimpot on the stompswitch is to match the brightness of the bypass LED with the tempo LED.

[jasonsguild]

I just finished building this up and I'm just working out the ticking (haven't boxed it up yet).  Similar to a what was posted in the first few pages of the thread, the only way I've been able to eliminate the ticking so far is to leave the LED at maximum brightness with the trimpot set at no resistance.  Once I have the LED at full brightness, I can set the NSL-32 trimmer at any value and ticking is very minimal if any at all.

So the question I have, since I didn't see it mentioned, does leaving the LED so bright have any negative impact on anything?

Thanks,

J

[Taylor]

Can damage your vision (really - blue light is especially bad IIRC), draws more power, maybe shorter LED life, but other than that I can see no significant drawbacks.

[jasonsguild]

Cool, I'll start wearing shades when I play, a win-win!  Or maybe I'll try to diffuse the led.  Thanks Taylor

[stone temple pinot]

Any ETA on new stock of these boards?
Anxious to get one....
-STP

[Gaetano Capuano]

Any ETA on new stock of these boards?
Anxious to get one....
-STP

This.....................

[Jimmersd]

Any ETA on new stock of these boards?
Anxious to get one....
-STP

This.....................

..eh?

[Taylor]

Gonna be a while unfortunately. A few weeks to a month.

[stone temple pinot]

Cool....let us know. 

[Ultrakd]

Ok haven't posted for a while. Been super busy and have bad no time to work on pedals. But the other day I thought I'd try and work on this pedal again only to find I have a even bigger problem. My previous problem is that I could not get the ticking to stop. I even got a new Opto. After going up for a while I decided to try working on it again. Not it doesn't work at all! No sound at all comes through. Completely silent.....any suggestions as to what happened? It's just been sitting. I'm really sad cause this was my fav pedal when I got it working once then I unplugged it and plugged it back in and I've had nothing but problems

[Taylor]

No sound could be anything. As usual, check here:

http://www.diystompboxes.com/wiki/index.php?title=Debugging