Search found 57 matches

by muted
Tue Aug 06, 2019 11:59 am
Forum: Music Tech DIY
Topic: sourcing small through hole resistors - befaco
Replies: 22
Views: 1453

They use 1/8 watt. found out the hard way a few years ago. That's not ideal. No idea why, they are a bit harder to find, and not so robust. I would avoid anything built with those 1/8W resistors, as they are only barely adequate. Three questions: 1) What do you mean by "they use 1/8 watt" - how do ...
by muted
Sun Jan 20, 2019 1:52 pm
Forum: Music Tech DIY
Topic: [IC] PRIZMA - 2 channel, 16 step sequencer with rainbow
Replies: 384
Views: 31724

I have an issue that seems to be relatively common: Most times i start my Eurorack system, the Prizma is just giving me all blue (and powerful) LEDs, however once in a while it starts up and functions. I have the Pusherman version of the board, so... not the latest one I suppose. Is there an officia...
by muted
Tue Oct 02, 2018 11:02 am
Forum: Music Tech DIY
Topic: [PROJECT] Music Thing Spring Reverb
Replies: 1193
Views: 129069

So I have the MkI spring reverb built but I never got around to getting a spring tank for it, so it has just been lying around. Anyways, I'm getting one now, but I would like to know: Is it possible to "upgrade" to the MKII version by modding the MKI, through DIY expansion module or something? Thanks.
by muted
Fri May 11, 2018 4:41 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

So Julian, I have a 4U (3U+1U) eurorack and some 1U tiles I would like to put to good use. Could I just hook some thonk-icon jacks to the output pins of the 3 oscillators to have all waveforms available simultaneously, or must I add additional circuity to make it work?
by muted
Wed May 09, 2018 4:53 am
Forum: Music Tech DIY
Topic: Roll Your Own Optodist - General Discussion & DIY Thread
Replies: 279
Views: 40794

Which xvive vactrols are compatible with the optodist (if any), and are there other modifications necessary to facilitate this i.e. other resistors etc?
by muted
Mon Nov 20, 2017 2:29 pm
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

Hey guys, I finished my first keyboard MME a few weeks ago and it sound absolutely amazing! I have an old OSC 3 model D too and will do a head to head comparison at some point.. The GB mini modular, as we call it, is an MME with the addition of a Fatar TP/9S keyed, DIN/USB-MIDI, SIN/TRI/SQR LFO wit...
by muted
Tue Sep 05, 2017 3:37 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

So I feel that it is appropriate to just say that I LOOOOVE my new piece of gear!!! It functions and works GREAT, even with no calibration (yet), super spacious compared to most Eurorack gear, so live manipulation and use is super easy - it totally reduces the amount of clutter on my synth for the p...
by muted
Mon Sep 04, 2017 10:03 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

Today I have finished building my MME. Much more room between the knobs than I thought. Very happy! Nice looking build! What toggle switches did you use or are those hats on the toggles? Tayda has these http://www.taydaelectronics.com/electromechanical/switches-key-pad/toggle-switch/toggle-switch-h...
by muted
Tue Aug 29, 2017 9:44 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

muted #1 : JP19: Pins facing me and panel UPWARDS, right? : yes. Now not a big deal. You can later change that. I sometimes change my mind myself and use a small pliers to change the jumper position. #2 : JP10 : one day you might want to remove it and replace it with something else ... but for now ...
by muted
Tue Aug 29, 2017 9:15 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

muted - You must install jumper on JP10. - JP19 : when you look at the pins (pins toward you) : -> jumper on the left : PRE -> jumper on the right : POST So I have 4 questions (sorry, I know...) JP19: Pins facing me and panel UPWARDS, right? What does JP10 do, would I ever want to remove it? Also, ...
by muted
Tue Aug 29, 2017 6:44 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

About the jumpers: JP19 sets amount envelope pre/post amount potentiometer. Which side is what, and what is the default setting?

And what does JP10 do? Should it be connected by default or not?

Sorry if this is already mentioned.
by muted
Mon Aug 28, 2017 2:21 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

Did anyone measure the power consumption of the MME yet?
by muted
Thu Aug 24, 2017 4:20 pm
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

So I am looking at buying 0.1 % resistors for the matched resistor pairs, as I do not have a multimeter precise enough. Does it matter what the temperature coefficient of the resistors are? All my other resistors are primarily from Tayda. For instance the 15kohm 1% resistors I have bought through t...
by muted
Thu Aug 24, 2017 3:52 pm
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

So I am looking at buying 0.1 % resistors for the matched resistor pairs, as I do not have a multimeter precise enough. Does it matter what the temperature coefficient of the resistors are? All my other resistors are primarily from Tayda. For instance the 15kohm 1% resistors I have bought through th...
by muted
Thu Aug 24, 2017 7:40 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

jdelgoulet wrote:muted
BOM is incorrect. I will fix that sorry.
It should be 22, one for each potentiometer.
As long as I did not mount it wrong, which it then would appear that I didn't :) Thanks!
by muted
Thu Aug 24, 2017 5:20 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

I have a question: The BOM lists 28 plastic washers, but are only 22 needed? It says "add the plastic washers" in the soldering guide, but it says nothing about adding them to the 6 switches. Or did I misunderstand? Should I have added plastic washers to those as well?
by muted
Tue Aug 22, 2017 9:35 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

LED-man wrote:Where can I find the schematics?

how about JP10 ?
the BOM shows 2 jumpers , one for JP19 and the other one ?
Take a look at the "Adjustment and Tuning" tab in the build guide for the jumpers.
by muted
Sun Aug 20, 2017 11:10 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

I have two (additional) total noob questions: Topic 1 I wish to clean the PCB from my rosin core flux - I have some 99% isopropanol and a toothbrush, but should I: A) Clean both sides of the PCB, and B) What should I look out for in this process (pots, switches, trimpots etc? other?) Topic 2 Regardi...
by muted
Sat Aug 19, 2017 10:09 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

muted hum ... looks like you cannot since with the method mentioned you compared two identical transistor at the same time. I have used the Moog method where you measure Vbe for each transistor. The matching between the 2N3904/2N3906 is not that critical and can be a real pain since the transistor ...
by muted
Sat Aug 19, 2017 1:28 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

So have to match the 2n3904 and 2n3906 pair and I have a question: I'm using the Ian Fritz method / circuit, which has a PNP an an NPN mode, supposedly able to math either two PNP or NPN transistors.... Which mode do I choose when one is a PNP and the other is an NPN as is the case with the 2N3904/...
by muted
Fri Aug 18, 2017 6:09 pm
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

jimfowler wrote:https://www.radioshack.com/products/cai ... one-grease

This is the stuff I use as per Ray Wilson's recommendation (via his website).
Thanks!
by muted
Fri Aug 18, 2017 5:09 pm
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

So have to match the 2n3904 and 2n3906 pair and I have a question: I'm using the Ian Fritz method / circuit, which has a PNP an an NPN mode, supposedly able to math either two PNP or NPN transistors.... Which mode do I choose when one is a PNP and the other is an NPN as is the case with the 2N3904/2...
by muted
Fri Aug 18, 2017 1:44 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

Anyone have a link for some "heat sink compound" for the coupling of tempco resistors and the LM3046?
by muted
Wed Aug 16, 2017 5:17 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

muted "The angled male pins in JP19 comes after a series of straight pins," : no,it comes before. JP19 is an angle header so it is on step "3" which is before the higher ones that start on page "4". There is something I dont' get in your proposal. :hmm: You are right, it's because I soldered the an...
by muted
Tue Aug 15, 2017 2:56 am
Forum: Music Tech DIY
Topic: Mini-Modules : Minimoog DIY clone on its way.
Replies: 1945
Views: 277596

May I suggest a "Readme!" note in the soldering guide on the Control board: The angled male pins in JP19 comes after a series of straight pins, and it's not clear that they are the angled ones or which direction they should point. I know it may be obvious to some, but I managed to solder in the stra...

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