My tap tempo tremolo :)

[Coda-effects]

I finally finished to make a tap tempo tremolo!

This was a huge amount of work, but it finally works correctly This is my second prototype. It uses my relay bypass switching scheme. It uses the TAPLFO from Electric Druid, and is quite close from the circuit presented in the datasheet.



The mini switch allow to change between classic true bypass or "temporary bypass" (effect is on while you press the switch only), which is nice to use the square waves for instance.

Next, there are 6 potentiometers (many options!). From left to right, top to bottom:
    Depth: set the tremolo's deepness, from very subtle tremolo to huge choppy tremolo!
    Rate: speed of the tremolo
    Symmetry: changes the waveform, by modifying its duty cycle.
    Waveform: 6-way rotary switch to choose the waveform: square, random, sweep, triangle, sin or "ramp up" waveform
    Volume: can boost a bit the output signal
    Tempo subdivision switch: set the ratio between the tapping or rate knob and the rhythm of the tremolo 2:1 (the tremolo is twice slowler), 1:1 (same speed as tapping), 1:1,5, 1:2, 1:3 et 1:4!
   
I really love it, and it is on my board now


I had a troubles with noises (ticking LFO noise, very annoying with square waves), but bypassing power supply 100R resistors and adding a huge 470uF resistor on the other side of the board got rid of it



In order to use rotary switches for selecting waveforms or tempo ratios, I used a Alpha mini 1P6T rotary switch. I added 2 adaptor boards so it fit perfectly ! (you can also see the vactrol)


Overall, I am very satisfied with it. it was very complex, but also very rewarding ! Moreover, it sounds very good and can do plenty of different stuff, from vintage tremolo with sin wave, to choppy Rage against the machine music bits, I really love it! The random waveform is also quite interesting and is very nice combined with a delay at the same tempo.

A big thank to everyone who helped me in the process, from Tom (Electric Druid), David Rolo and other forum members!

I wrote an article on my blog if you want to read a bit more about it: http://www.coda-effects.com/2016/05/tap-tempo-tremolo-diy-complex-project.html

[drolo]

Demo!Demo!Demo! 

[jimilee]

Really nice work!

[Matt]

That's amazing!  Tight layout too!

[storyboardist]

Love your builds, man. Well done all around.

[archaos]

Super pédale, look d'enfer, bravo !
On veut des clips. 

[midwayfair]

Very sharp looking.

[chuckbuick]

Outstanding.  I really like how you handled the rotary switches.

[selfdestroyer]

Glad you got the ticking under control. I love the compact design of the PCB.

Cody

[nmbb]

Nice build. Having both time divisions and waveform using the rotary switches is definetly a good ideia!

[stringsthings]

Very sharp looking.

+1

[nzCdog]

wow, that's cool!

[flanagan0718]

This looks great! Very nice job.


Sent from my iPhone using Tapatalk

[beneharris]

That is really impressive to be able to take that from concept to execution like that. Great job!

[Lubdar]

definitely cool to see this come to fruition!