[ST]: Just another tremolo

mtmattan

What up guys,

Here's another one that's been a couple of months in the making.
Worked first time! 8)

Nothing too unique about this tremolo except 1. Tap tempo 2. Gain control when engaged 3. Blend control for clean and trem signal.
To be honest, the blend control isn't as useful as I'd hoped - so will leave it out of subsequent revisions.

On the production side, put quite a lot of work into the PCB design to ensure 1. Everything is board mounted (no wiring) 2. Physical isolation between the micro chip and the audio path (no ticking).

Matt.

mtmattan

Wow guys so many replies!
The enthusiasm is mind blowing ?
(lol I find it funny at least!)

DDR4LYF

That blend control sounds cool! Wouldn't it be cool if the trem signal could go through an effects loop? That would be cool! Trem with an envelope filter underneath the clean signal! Would that be really hard to make? This looks so cool! Tremolos are super cool! I love them. Does the gain affect the clean signal or just the effected signal?

flatfourfan

any sound clips?

guidothepimmp

Anything to spark off your pedal gas eh

Since when are you a tremsolo fan? :?

Attila

Dude

I am alway just blown away with the "big factory" (iso 9000 like) finish of your boards ..... and workmanship ...... who does em for you if you don't mind me asking

Kalcium

Mattocaster wrote:
Physical isolation between the micro chip and the audio path (no ticking).

I don't understand how this can be? But then again I don't really know circuits...yet ?

bottledtone

Just very cool.
My boards don't look close to your quality.
And why on earth would you wanna buy from someone when you clearly can do yours better.

mtmattan

In regard to the Gain, it only affects the "trem" signal. Very useful as trem tends to result in a perceived volume drop.

As to the boards, I do all the circuit and PCB design myself. I really enjoy the board design part - like putting a puzzle together. Also, lining up the components appeals to my OCD! ? I then send it off to a prototyping service and they send me back 3 boards in a couple of weeks.

By physical separation, if you look closely there are actually 2 separate PCBs. One for the microchip digital circuit and one for the analog audio circuit. In that way it prevents LFO ticking to be heard in the sound. It's usually prevented with smart component placement. 2 PCBs are definitely an overkill but I did it like that so both the Pitch and Trem pedals I built use the same microchip PCB. Quite proud of that design choice!

Will try record a decent demo - sounds like any trem though ?

peterleroux

Looks good, not that I know much about tremolo. A few questions:
-what chip are you using for tap tempo? I'm keen on fitti g tap tempo to my delay but don't fancy the cost of getting a taptation posted from the States.
-do you use a local prototyping service or soon done overseas?
-are you using eaglecad or something else?

mtmattan

Using the my own microchip but I programmed it with the TapLFO code. That way I can modify the code for what I need. WAY out of my paygrade to write something like that from scratch! The Taptaion chip only works for delays ie specifically for setting the Pin 6 resistance on the PT2399 chip.

I design all my stuff with Eagle. It's what I learnt on and is nice in that there are a ton of part Libraries available. It's also free which is huge bonus. Doesn't compare to programs with a simulator and a good auto router - in Eagle you do all the track routing by hand.