Oh dear… I just slipped and accidentally bought my first eurorack module. Well, not exactly a module… a face plate and a circuit board. I didn’t even think it through. Just ordered it. Have not ordered the components to solder on to it yet. In my defence, I have been left unsupervised throughout 2020. Did I screw up? Is it too late? Should I warn my bank manager? Is there any hope?

(p.s. I was going to ask “When is the zynth eurorack form factor being released?” but i am fibbing a bit about ordering my first eurorack module… I have already received a 3d printed eurorack mount for a raspberry pi official 7" screen. Can you guess what it is yet, kids? )


You do, of course, realise the UKrack is a far superior product allowing you to interface to proper musical instruments like Kay?!?!?

You couldn’t buy a finer guitar in the 60’s & 70’s in Britain…

What just happened?

A ripple in the force . . . .

We really need a raven icon, :dove: doesn’t really hack it.

Ok great… The board and faceplate arrived for my first eurorack module. They actually look really nice too. Unfortunately, I am going to have to wait a while as I have not yet ordered the other parts on the BOM (bill of materials).

Anyway, it now appears that I may have to acquire a new skill, and I have to be honest, I am a bit worried about it. I’m already proficient in blowing up electronic devices that I have hand soldered badly. Now I have these boards in my hands, I can see that even the manual soldering is going to be tricky but a new challenge awaits me :- I have never even considered soldering SMC yet. Anyone got experience of SMC? How should I approach this? My gut feeling is that I could save myself a huge amount of time and effort by snapping these in half and forgetting about it… But where is the fun in that?

Obviously I have no sound to play for @wyleu yet, so I will just leave this here instead…

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Yes,I’ve tried to solder a wm8731 (28 pins, 0.65mm pitch) codec IC on a small breakout board, but it was not that good at all :unamused:
With that single experience, I couldn’t even tell you what no to do. I’ve tried to follow some tuts on YT but I had a lot of shortcuts between pins …

Maybe train yourself with some cheap ICs on these kind of breakout.

I still have got 4 wm8731 ICs left,so I will have another try (it’s on my todo list).

Good luck !

I can only recommend the same as @le51
Buy some boards like these and practice soldering some cheap SMC first :+1:

I have some semi-modular stuff, but I am still hesitant to go all the way and jump into the euro stuff.
I would probably spend so much money on all those nice things I already spend too much time reading and watching videos about :grin:

Happy soldering/building! :face_with_monocle:

I had SMT soldering training about 35 years ago. I’ve done almost none in the interim. I did a little last year. You need a fine tip (point) iron. Your PCB pads should be lightly and evenly tinned with solder. You then heat each pad in turn to flow the solder. As with most multi-point soldering, hold the device in place whilst flowing the first couple of diametrically opposed pins so that the device is correctly oriented then do the rest. Unsoldering is very, VERY difficult so get it right first time. (Very difficult is quite close to impossible.)


Only ever tried it once and that was using a header to turn it into an 8 pin DIL .

shudders . . .

I believe there is a newer method that utilizes a stencil, some paste and a heating gun. I am looking into doing that.

Sounds like the heat flow method used in production. I will be interested to hear your progress.

Well, at least this eurorack module is working!

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