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Like you said, the Bournes trimmer is 1/4 inch on its side. The smallbear trimmer you linked is 3/8 inch on its side. It more likely than not (sound familiar Tom Brady?) will not fit on the layout.

Steve.

Thanks Steve! Awesome community =)

Hello there,

I would like to know if there's a difference between this trimmer and this other trimmer

The Aquaboy DX's says this: "The trimpots are spaced for Bourns 3362P (mouser.com), which are about .25" on a side."

Thank you!

Those 47u (IIRC) are DC blocking caps, so phantom power goes to your mic and not to the input of the INA217 (or anything else). Check out the datasheet for the INA217. The input voltage is something like +/-3 or 4V. If phantom power was getting to it, I wouldn't be happy. Same with almost any type of music equipment. Line level is typically 1V. Nothing would be happy with 47V! That's why you apply phantom power before the preamp and not after. I'm sure there a better way to say it, ah well.

Thank you very much for your explanation!!

You made it pretty clear to me

Cheers!

Where is the quoted "burn it" coming from?

If you want to do phantom powered, you are going to have to provide the phantom supply prior to the effect. If this is what you want, it would almost (definitely) be easier (and more versatile) to build a mic preamp with the phantom power, then feed that to the delay. You cannot go mic -> delay -> preamp/phantom power as that will either not let power get to your mic or "burn it".

The INA217 data sheet circuit does allow for phantom power if that was what you're asking?

What I meant by "burning it" was that I don't know what would happen to the AquaboyDX if I send a phantom powered signal to it: mic -> preamp/phantom -> delay

It concerns me the fact that building a preamp into the pedal might "burn it"?

I think you will get best results building a small mic preamp into the pedal, then you can just bypass it when you want guitar. The INA217 makes a SUPER simple mic preamp and takes your balanced input to unbalanced (what you need). You'll have to mess with the gain to make it similar to a guitar input. If you don't want to fuss with power requirements, there are a number of simple opamp based mic preamps.

Will the INA217 work for a phantom powered mic as well as for a sm58?

Hello there,

As you may notice for what I'm about to ask and my previous posts, I'm new to this big DIY'ing passion

In this occasion I came across a question:

I'm setting things up for building an Aquaboy DX. The thing is I plan to use a dynamic microphone with it aswell as my guitar.

Should I consider building a preamp and attach it to the aquaboy's PCB with a "line/mic switch" which decides wheter to pass the signal through the preamp or go directly to the aquaboy's PCB?

Hope I was clear enough!

Thank you guys in advance

Francisco.-

Thank you guys, I'll give Australian Paul a try or maybe banzaii who also treated me well

Have a nice weekend!

Banzai's shipping is worst in my experience.

Just bought some parts from then.

Took an age and they haven't shipped some parts.

They have got a lot worse since last time I used them.

My previous experience with banzaii was about two years ago and it went good.

For what you guys say I asume they got worst

Thank you guys, I'll give Australian Paul a try or maybe banzaii who also treated me well

Have a nice weekend!

Banzai's shipping is worst in my experience.

I must say that they shipped some parts to my country a while ago and people in argentinian customs sent it back to where it came from twice.

I had to make banzaii send it to me to Uruguay, my neighbouring country, and everything went well!

You should definitely give them another chance!

Thank you guys, I'll give Australian Paul a try or maybe banzaii who also treated me well

Have a nice weekend!

Well I guess I'll have to pay double international shipping then =p

Thanks for your response!

Hey there guys!

As I'm from Argentina, bringing parts from the outside is really expensive so I prefer getting all of them from one distributor only.

I've already filled my cart at mouser.com but there's only one thing missing, the vactrol.

Are there any alternatives to the VTL5C3?

Thank you in advance!

Hi and welcome to the forum.  I had a similar question several months ago and I came across this article that really helped me understand how ripple current can be minimized. It explains the relationship between ESR and ripple current as well as how to find the optimal decoupling cap.  If you are designing circuits this is a must read. Luckily, Madbean does the hard work for us when he designs his PCB's.  If you are a new builder you can just follow the build instructions and not worry about proper decoupling caps, but I still think it's good information to hold on to.
     I also want to mention that your power supply rating is your MAXIMUM power rating. Your 300mA power supply will only match the load necessary to power the circuit. Most projects here require a load of maybe 15mA to maybe 150mA. All you want to do really is find a 10uF capacitor with a greater max VOLTAGE than what is required in the build doc. 35v or greater is usually more than enough. Here is the article I mentioned above.

http://www.niccomp.com/help/ESR-RippleVoltage-032012.pdf

Hope this helps.

Steve.

Thanks Steve, that was really helpful

Have a nice one!

Francisco

Hello guys!

I'm new to this awesome community and I hope I get better and better through time!

I'm about to start building my first Aquaboy DX and I came across a question: Should I care for Ripple Current on capacitors?

My power supply delivers 300 mA and I can't find any 10uF capacitor with that current flow.

Thank you very much for your time and have a nice week!

I can't tell from the picture whether if you put a D1 or not