Search found 21 matches

by metabaron24
Thu Aug 23, 2018 3:02 pm
Forum: Music Tech DIY
Topic: [Project] Turing Machine Mk2
Replies: 454
Views: 43269

Fantastic! Thank you so much. Time to connect and play! :banana:
by metabaron24
Thu Aug 23, 2018 9:09 am
Forum: Music Tech DIY
Topic: [Project] Turing Machine Mk2
Replies: 454
Views: 43269

This should be a quick one to answer, but for the life of me I haven't been able to find an answer in this thread or anywhere else in the web. So I've just built a Volts expansion rev3 PCB and I'm trying to figure out which of the two headers I connect to the Turing machine's Gates output and which ...
by metabaron24
Thu Apr 12, 2018 5:26 pm
Forum: Music Tech DIY
Topic: [Project] Turing Machine Mk2
Replies: 454
Views: 43269

Finished my TM MKII build from a full kit. AAAAAAAnd..... no issues :banana:
I really like the module so far, and the documentation is ace.

My new friend makes melodies :yay: obviously the next step is a nice quantizer.
by metabaron24
Mon Mar 19, 2018 1:55 am
Forum: Music Tech DIY
Topic: [PROJECT] Expanders for Turing Machine Random Looping Seq
Replies: 256
Views: 29348

I’ll answer my own question, because I found out. How did I find out? Used the search function right here at home in the forum, sometimes life’s that simple. The letters I(ndustrial)and C(ommercial) refer to operating temperatures and don’t matter for Eurorack purposes unless you’re planning to play...
by metabaron24
Sun Mar 18, 2018 12:04 pm
Forum: Music Tech DIY
Topic: Which version of the TL072 (TL074) are you using?
Replies: 9
Views: 3983

Great information. Helps a lot because I couldn't wrap my head around input offset voltages. I need some for a Turing Machine Expander (Volts) and found a TL072ACP by Texas Instruments on TME. In the specifications it says input offset voltage is at 7500mV which got me very confused. As I understand...
by metabaron24
Sat Mar 17, 2018 10:48 am
Forum: Music Tech DIY
Topic: [PROJECT] Expanders for Turing Machine Random Looping Seq
Replies: 256
Views: 29348

I am about to source some parts for a Volts expander and the BOM says TL072 Op Amp When I was looking for this fairly standard amp, TME gave me three different results. All Texas Instruments. TL072 CP (input offset voltage: 13mV) TL072 IP (input offset voltage: 8mV) TL072 ACP (input offset voltage: ...
by metabaron24
Mon Feb 12, 2018 1:20 pm
Forum: Music Tech DIY
Topic: Befaco Even VCO
Replies: 179
Views: 19342

It says connect Voltmeter between T_P_1 and GND. T_P_1 is a test point on the PCB very close to the Width trimmer. For ground I use the the metal distance piece next to it. Works fine.

Good luck.
by metabaron24
Fri Jan 05, 2018 10:08 am
Forum: Music Tech DIY
Topic: [ORDER] ZeroScope, 6hp scope that's almost not even there
Replies: 435
Views: 38943

Problem solved!! :guinness: The scope is up and running. Great little fellow it is. The mistake was embarassingly simple. IC2 was installed with the wrong polarity :doh: Nothing much to learn there. The good side of the coin is all the SMD soldering that I did was good enough for the thing to work. ...
by metabaron24
Tue Jan 02, 2018 1:01 pm
Forum: Music Tech DIY
Topic: [ORDER] ZeroScope, 6hp scope that's almost not even there
Replies: 435
Views: 38943

please measure the resistance to GND. between the 3V3 test point and GND and also between the VDDA test point and GND. OK, that's what my multimeter schowed me: Resistance to Ground between V3.3 and VDDA test point is reliably 547 Ohm sweet Ohms +- 1 Ohm What does it tell me though? :despair: Check...
by metabaron24
Sun Dec 31, 2017 11:41 am
Forum: Music Tech DIY
Topic: [ORDER] ZeroScope, 6hp scope that's almost not even there
Replies: 435
Views: 38943

Thanks for yet another superquick answer. I will test that and get back to you, it's good to have a first line of enquiry. One more question: my PCB came not only with R12, R14, C31 and IC7 preinstalled -like it says in the BOM- but also C6 and C9 in that same region around IC7. Is that what it was ...
by metabaron24
Sun Dec 31, 2017 11:24 am
Forum: Music Tech DIY
Topic: [ORDER] ZeroScope, 6hp scope that's almost not even there
Replies: 435
Views: 38943

So I built mine. SMD is scary but I had some help and teaching for part of the build. But no luck for me. Nothing happens at all. It doesn't even power on, screen stays dark. :waah: Plus it quickly develops heat in the region between the screen and the first encoder. Hope I haven't already fried any...
by metabaron24
Sat Dec 16, 2017 11:54 am
Forum: Music Tech DIY
Topic: [ORDER] ZeroScope, 6hp scope that's almost not even there
Replies: 435
Views: 38943

Are these to be ordered directly from manufacturer- I couldn't find anything on Thonk?
Absolutely. It's in the first page of this thread.
by metabaron24
Fri Dec 15, 2017 6:08 am
Forum: Music Tech DIY
Topic: [ORDER] ZeroScope, 6hp scope that's almost not even there
Replies: 435
Views: 38943

Thanks! That's what I call a fast response. :hyper:
by metabaron24
Fri Dec 15, 2017 6:01 am
Forum: Music Tech DIY
Topic: [ORDER] ZeroScope, 6hp scope that's almost not even there
Replies: 435
Views: 38943

I'm really new at this game, so I need to ask one of these questions that probably everyone takes for granted as I couldn't find anyone asking it in 14 pages of thread. I'm compiling parts for the Zscope and buiding courage to build it. Here goes: I understand that for the power connection a 16pin t...
by metabaron24
Tue Dec 12, 2017 3:04 pm
Forum: Music Tech DIY
Topic: Dreadbox Hades DIY
Replies: 132
Views: 12196

Couldn't agree more! There were some parts that were not right in my second batch bags, but hey, isn't it part of the DIY learning curve? Maybe they should go on selling DIY kits with a warning: "Only buy this if you don't mind troubleshooting and getting a few parts yourself" They make such great g...
by metabaron24
Sat Dec 09, 2017 4:07 am
Forum: Music Tech DIY
Topic: Befaco Even VCO
Replies: 179
Views: 19342

What a weird resistor this is, isn't it. 4.22 Ohms is unheard of. But there we go Resistance is just the result of an equation. @zorglub: What IC's did you replace? IC2 and IC3 with the LF412? I have those in my bag. Or did you take even fancier ones? Nicely done just doing it and getting stable res...
by metabaron24
Wed Dec 06, 2017 9:40 am
Forum: Music Tech DIY
Topic: Befaco Even VCO
Replies: 179
Views: 19342

Also the question is: If you have an assembled version that is nicely tuned and tracks well, why bother getting an update? It's not that they weren't usable as stable VCOs before the update, at least that's my impression from reading here.
by metabaron24
Wed Dec 06, 2017 9:31 am
Forum: Music Tech DIY
Topic: Befaco Even VCO
Replies: 179
Views: 19342

Just took a look at the BMO. As far as I can tell it's updated, so if you've sourced your parts recently you should be fine. It's easy to tell by the temp sensor.
by metabaron24
Wed Dec 06, 2017 9:28 am
Forum: Music Tech DIY
Topic: Befaco Even VCO
Replies: 179
Views: 19342

I didn't buy mine from them directly but from a shop in the Netherlands, which must have had a pre-upgrade version. My PCB also says V 0.3.3. wich still doesn't mean the temp sensor is the updated one. My component bags also had the old resistor selection. These are the only changes regarding parts:...
by metabaron24
Wed Dec 06, 2017 4:34 am
Forum: Music Tech DIY
Topic: Befaco Even VCO
Replies: 179
Views: 19342

I am about to build the Even VCO from a full kit. I'm a little nervous about it, it's only my second build and I've read all the stuff about tracking problems and there are a number of revisions to the assembly. The latest one is for the temperature stability update and it calls for an SMT part to b...
by metabaron24
Mon Dec 04, 2017 2:33 am
Forum: Music Tech DIY
Topic: Dreadbox Hades DIY
Replies: 132
Views: 12196

Hi Forum, I thought I might add my two very basic cents as I also completed the build and it was my first soldering project aside from cables. I was lucky enough to pay close attention after the first batch was gone and got one of kits without the resistors. I couldn't resist at that price and this ...

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