Tindie

With the price of eurorack modules averaging well over $200 each, it is silly not to build your own if you have even modest soldering skills. I highly recommend PM Foundations modules as one of, if not the cheapest DIY eurorack synthesizer option out there. For a $15 pcb and panel, $10 worth of parts, maybe 2 hours of time, I have a well functioning ADSR that was a snap to build. Worked first time it was plugged in. Calibration took all of 5 minutes.

If you're in the market for eurorack modules, you owe it to yourself to check out the PM Foundations line here on Tindie first. I wish I had discovered them sooner.

Joseph | Feb. 11, 2019

Awesome units for the money! Great flexibility!

For State Machine (Eurorack PCB Set)

I have two of these units. I can say that once you're done with them that you'll be happy you built them. The calibration is very easy for them. The outputs are very unique and I often times use them to add some sort of effect or filter change when you hit steady state or release. At any respect, I have yet to find a comparable module anywhere. No eurorack setup is complete without one! With the positives being said, these do take some time to build. There are alot of resistors. The first one took my 6 hours to build. I have about 30 years of experience soldering and the issue was simply that there are alot of parts. They're not hard to assemble and the instructions are great. But the time spent is well worth it. Just be patient, take your time, and follow the instructions closely. I highly recommend them.

Joseph | Feb. 11, 2019

I have two of these now. They're easy and fun kits to build

I have two of these units now and after doing the calibration setup they work great! They're pretty fast acting and can work well for percussion, although most of my stuff isn't percussive. I'd recommend these kits to anyone who is interested in DIY modular but not real familiar with soldering. Just make sure you take your time and follow the directions carefully.

Dan | Jan. 7, 2019

A quick and easy mixer

For My Little Mixer (Eurorack PCB Set)

Worked first time I plugged it in. The build only took a leisurely two hours. I just use a small, long nose soldering iron and tweezers to solder the SMD parts. Very easy and works like a champ. I built the version without front panel switches and just use the pins with pc jumpers to change between DC/AC signals.

Dan | Jan. 7, 2019

Does the trick for my Make Noise Bermuda VCO

For Saw Shaper (Eurorack PCB Set)

My Bermuda only outputs Tri, Sine and Pulse, so I needed this module to get Saw. The sound is good but on my oscilloscope I noticed the amplitude of every other positive peak is only about 66% of the Ramp peak ahead of it. Could be my cheapo oscilloscope or I didn't nail the calibration. Again, to my ears, it sounds every bit of a saw wave so I haven't bothered to mess with it more. I suppose if I ever want to use it for modulation, that could be an issue....or a great new feature. :-D

I noticed a discrepancy between the FET specified in the BOM (2N5457) vs. what is in the Mouser shopping cart (PF5102). Specs between these 2 parts are quite far apart. Either that's a slip or the application is not critical? I actually used a 2N5458 in mine.

Response from PMFoundations | Jan. 7, 2019

Thank you Dan for your review. It does sound like a calibration issue (R26 Ramp Trimmer) but if you are happy with the sound then there is no reason to change it. It is still rich in harmonics like a saw wave. I have changed the Mouser cart from time to time due to the fluctuating price and availability of various FETs. In any event the most economical solution is the SMD part MMBF5457.

Vidar | Dec. 20, 2018

Had this for a year now and I still love it.

This was my first eurorack module and the first time I soldered anything else than guitar leads. Got it working on the first try and been building modules since. The soldering I did is probably pretty crappy and and the panel would be easier to mount if I knew what i was doing, but it was FUN. Got a ca3080 reissue six months ago and it sounded even better. It'll always be my favourite modul. Would really recommend using T18 potentiometers if you are sourcing your own parts, since the micro knobs from thonk (Befaco style) are kinda mandatory if you are suffering from sausage fingers like I do. Would also skip the right angled 16-pin header and use a straight one, might not be ideal since it'll be a little wider, but I doubt it will ever come down to the few extra millimeters the straight header adds. I use Tip Top Z-Ears and this module is just slightly too deep with right angled headers. It would make contact with the surface, alway applying little bit of pressure before I changed it.

Response from PMFoundations | Dec. 20, 2018

Takk Vidar for din anmeldelse og for å gi kundene noen nyttige tips. 3080-VCO er ikke den grunne av moduler, men er definitivt ikke en HP hog.

(Thank you Vidar for your review and for providing customers with some useful tips. The 3080-VCO is not the shallowest of modules but is definitely not an HP hog.)

Jason | Sept. 23, 2018

Highly recommend

For 8 Voice MIDI-USB Controller (Eurorack PCB Set)

First thing I have ordered from Tindie. The seller answered all my questions and sent the order within a day. Items arrived quickly without any problems. Both the boards and panels look good quality but I am yet to put them together as I am waiting on parts.
All in all very happy.

Randy | Aug. 28, 2018

Cool, inexpensive, handy

For Toggle (PCB Set)

This is quite a cool little module. Easy build, inexpensive and works great. Had lots of fun clocking it with a function generator instead of a regular clock or LFO.

Philip | July 25, 2018

Great value for midi to CV

This is a well designed midi to control voltage unit.

The build isn't overly complicated, but requires some patience to get the boards and jacks aligned properly so that they fit into the face plate. Once assembled mine worked.

I don't have one of the recommended keyboards, but it seems to work with my minibrute - I haven't tried switching modes yet, which requires a midi source that sends volume out.

My mouser order was about $95 before shipping, so this module represents a fantastic value for a midi-cv interface - the befaco kit is about the same amount, but you get twice the number of cv and gates with the pmfoundations module.

Response from PMFoundations | July 25, 2018

Thanks for sharing your experience Philip. It is not the easiest build and I am glad to hear that you battled through the intricacies to get a nice 8 channel polyphonic keyboard controller. If you want to try out the mode switching/programming side of it with the Arturia MiniBrute, please email me at jnfrench@pmfoundations.com. I have some ideas for you.

Ralphy | July 12, 2018

Great, easy to build oscillator!

Just finished my build and can say it was pretty straight forward and just took a day to build.Will definitely buy again.

Brad | July 6, 2018

Works great

Another fun and easy to build module that worked on the first try. Would buy again without hesitation!

Brad | June 25, 2018

Great product

This Dual VCA was a fun build with easy to follow instructions. It worked great with no problems. If I was building a bigger eurorack, I wouldn't hesitate to buy and build another one of these modules.

Dayne | June 22, 2018

Great space saver VCO!

For Micro VCO/LFO (Eurorack PCB Set)

This little VCO is awesome! It barely takes up any space in my rack, and tracks wonderfully. At first I had issues with tracking, and after e-mailing for support (which resulted in near instant response with help) I realized it was probably hardware related. Turns out the mystery origin 2n3906's were at fault. I matched up a set from a known good supplier, swapped them in and the tracking is wonderful. I can't wait to build some more modules from PMF!

Tucker | June 16, 2018

Awesome, compact, DUAL!!!

This VCA, as all modules from PMFoundations, is of incredible use, and comes in such a tiny package! Great PCB and panel layout and excellent build documentation. I will definitely be doing business with PMFoundations again in the future.

Tucker | June 16, 2018

Perfect addition to any rack.

This is a great little envelope generator and is a perfect addition to any rack. One can never have too many ADSR's. Top notch documentation and a great PCB and panel layout.

Tom | June 9, 2018

Stellar!

When it comes to simple DIY modules, these are simply the best. The design is easy and compact and works without any strange behavior. Perfect for someone just starting to build from PCBs and not just full kits. Arrived in only 2 days as well! Thanks!

Callum | June 7, 2018

Great value

Echoing the previous reviews, this is a great, compact ADSR with thorough documentation, easy to source parts and a straight forward build. Will be back for more

Callum | June 7, 2018

Does what it says on the tin

For Clock Generator (Eurorack PCB Set)

Great little module to lock your system an to get those LEDs blinking. Easy to source components and a great price.

Callum | June 7, 2018

Bang for your HP

For Micro VCO/LFO (Eurorack PCB Set)

Once again, lovely stuff. Tracks nicely and great for fitting in extra voices into already crowded rack.

Kane | May 28, 2018

A joy to build

For Clock Divider (Eurorack PCB set)

Apart from the expensive switchcraft jacks used, this entire build is a pleasure.

The only advice Id offer the vendor is that the explanation and BOM around the resistor and capacitor values is quite confusing and I had to read it several times before I was confident.

Response from PMFoundations | May 29, 2018

Thank you for your review. The jacks ARE expensive at Mouser. You can try other sources here: https://octopart.com/search?q=35rapc2av&oq=35rap&start=0. I have considered using other types but have had reports of them getting sloppy over time so I think you will be pleased with the performance of the Switchcrafts over time. Sorry about the confusion with the resistor options. Do you have a better way of wording this that I can incorporate into the documentation? If so, please let me know at admin@personalcircuits.com.

Callum | May 7, 2018

Top shelf

For Fatkeys™ VCF (Eurorack PCB Set)

Sounds great and very affordable. The build doc is very clear and I thought the option for either IC package was a great idea.

Response from PMFoundations | May 7, 2018

Thanks Callum. I am glad you like the filter. Your soldering skills must be top notch to get that SSOP Package in!

Quinn | April 19, 2018

Awesome Sounding Filter

For 2Q12 VCF (Eurorack PCB Set)

This filter is awesome, after seeing some of the demos i was hooked. Now actually having the filter its even better, the resonance has so many sweet spots, and having 3 cvs for the resonance is really handy. I did have a problem with the resonance when i first built, but with the help from John it turned out i had the resonance calibrated improperly. He was a great help and responded very fast, I cant say enough of how satisfied i am with this product and business.

Quinn | April 19, 2018

Great service, great VCO, and easy to build

Title says it all, John has done a great job cant be happier. This was my second module built ever and it booted up no problem and sounded great

Quinn | April 19, 2018

Nice sounding and compact VCA, piece a cake to build.

This was my first module to build and it was pretty much dead simple to build. I definitely recommend this module for first time builders to start, also sweet to have dc and ac input

Quinn | April 19, 2018

Nice Compact ADSR

For Synthola Sequencer (Eurorack PCB Set)

I bought two of these and were very easy to build, documentation was great too. Very happy the way both of them feel, and its very nice to be able to adjust the length of the sustain via trim pot.

Quinn | April 19, 2018

Awesome range

For Micro VCO/LFO (Eurorack PCB Set)

This uVCO is great, you can adjust it to become a LFO or a VCO but honestly works good as both. I bought two of these including alot of modules and the shipping was fast to Canada and came in a nice box.

Quinn | April 19, 2018

Handy Seqeuncer

I bought two of these and had one expanded to 16 steps, and i am very happy i have them in my rack. Its very easy to program and i really enjoy the high low switch. It can be used in many different ways not only for a sequencer. I've used it as an envelope with the glide function and the start stop function. while triggering other things with the gates. I also have to say that the manufacturer was very helpful when troubleshooting it turned out i accidentally put a 390r resistor instead of a 390k lol. I strongly recommend this module to anyone looking for a powerful sequencer.

Jean-Sebastien | April 7, 2018

Fun and easy build

For Clock Divider (Eurorack PCB set)

Every modular user needs a clock divider and this one is perfect for a 3rd or 4th project build. The mouser cart link facilitates part sourcing.

Andreas | March 4, 2018

Great Module

For Synthola Sequencer (Eurorack PCB Set)

Nice sequencer with a lot of features in a small package. Bought another one for future use. Building the thing is easy with basic soldering skills.

Ken | Jan. 31, 2018

Wow!

For Fatkeys™ VCF (Eurorack PCB Set)

Wow! - A 2144 ladder filter that sounds just like a classic Moog filter, but which actually tracks beautifully - amazing. Nothing more to say - I bought 2 of these and am using both all the time to add character to my patches. One minor gripe (but not worth subtracting a star) - I wish the description stated that the adaptor PCB was not needed. I bought 2 adaptors with my 2144s and had them soldered on before the Fatkeys PCBs arrived in the post, only to find that I could have soldered them straight on the board.

EDIT: my mistake, I read the description again when I saved this review: "Board accepts SSOP and DIP16 packages and adapters".

Response from PMFoundations | Feb. 1, 2018

Thanks Ken. In our opinion the customer is never wrong, so if you missed the information about the packages, WE need to make it more prominent. We will change the description as soon as possible.

Ken | Jan. 31, 2018

Awesome VCO

Built one of these and two of the scaled-down mini VCO version (which I intended to use as LFOs, but they get used for everything!). They are awesome VCOs and track better than some more expensive modules. The sine output, which can be tweaked to give a pretty pure sine wave over much of the range, is a real plus! I'm glad I put sockets in for the 13700 and the 3080 (I don't usually) - I recently came across some old 3080s (the metal can version) so must try one out and see if there is any difference.

Response from PMFoundations | Feb. 1, 2018

It will be interesting. Here's a link to the pinouts http://www.circuitboardchips.com/photo/circuitboardchips/editor/20161123140825_40790.jpg

Ken | Jan. 31, 2018

Great ADSR