Eurorack module testing tool (DIY)


#221

Wow, I cant believe this thing is working.
Sorry for my enthusiasm, this is my first time using a solder.

I am going to use it to play with banana modules,
my question is:

Is the tester using the switch pin in the front panel jacks ?
I want to use banana jacks instead the 3.5mm eurorack jacks.

Thanks.


#222

no it’s not using the switch pin.


#223

Just finished soldering the Module Tester. Heading to post office shortly, to pick up Ponoko case. Can’t wait to test the tester :slight_smile:

Random question: Has anyone encountered a Eurorack module which draws too much power to test with the Module Tester?


#224

Just finished Module Tester! Took me a minute to figure out how to calibrate, but working perfectly now.

Awesome design.


#225

Good job it worked or you’d need a module tester tester.


#226

https://www.youtube.com/watch?v=w3jjZdyH6io


#227

Anyone could be interrested on doing a small run for theses pcbs ?


#228

A few notes on using the Ponoko case, based on my experience (YMMV):

1. Be careful with the outer diameter of your 20mm standoffs. They can interfere with case nuts and cause you to crack off the thin area that the case-screws go into. I always use Harwin brass/nickel standoffs from Mouser, and they were a tight fit here. I had to make sure that they were oriented a particular way, to give the nuts enough clearance.

2. I found it easiest to spray paint the case parts before removing them from the single piece of laser-cut acrylic. Tape off the cut areas, to ensure no bleed.

3. I know the BOM says 10mm standoffs, but I found that the Erthenvar jacks and 5K and 20K trimmers were tall enough that 12K worked better.


#229

Hi all,

I got this all up and running — it’s fab! Wish I had it at the beginning of my project.

Everything works except…

I am having issues with the CV out — I just get a constant 10.8v output.

I also don’t appear to have any -12v output on the module power connector.

James


#230

Checking the LM2990 — I don’t appear to have any power going in or out of it.

There’s no power at the input of D5 either.


#231

Are you using an AC adapter?


#232

Aha — that’ll teach me to blindly order a Mouser cart.

At least that was easy to debug—

Thank you — and thanks for this board — it’s brilliant!


#233

A link to the BOM is on the tester page

Just scroll down a little.


#234

Does anybody have Mouser BOM/Cart for tester ? If yes, could you please post a link


#235

Hey guys, sorry for raising the dead…erm…resurrecting this thread again.
Just one question: are the outputs for testing simultaneous usable, or only one (selected) channel ? I don’t want to get puzzled by that fact if the tester is not working or the module :wink:


#236

All outputs are running simultaneously.


#237

You are my hero ! Back to work…


#238

Just finished building two testers! I’m having word for word the exact same problem as @bkbirge described above. So just to clarify… the fix for the aforementioned issues is to replace the 20 Mhz crystal with something with a lower value?


#239

No. Either you have the wrong parts or you didnt program it correctly, it has to be a 20 MHz part.


#240

Understood! Thanks Altitude!