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 Forum index » DIY Hardware and Software
2017 Build Photos!
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NoodleDriver



Joined: Jun 22, 2016
Posts: 30
Location: Ireland
Audio files: 5

PostPosted: Thu Feb 09, 2017 8:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Both of you are my eletronic heroes! Embarassed


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PHOBoS



Joined: Jan 14, 2010
Posts: 5591
Location: Moon Base
Audio files: 705

PostPosted: Thu Feb 09, 2017 8:51 am    Post subject: Reply with quote  Mark this post and the followings unread

Very Happy

that's a very nicely built.
I am assuming the foam is insulation for a transistor pair, good idea,

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NoodleDriver



Joined: Jun 22, 2016
Posts: 30
Location: Ireland
Audio files: 5

PostPosted: Thu Feb 09, 2017 9:38 am    Post subject: Reply with quote  Mark this post and the followings unread

Thank you kindly sir. Very Happy

Yes, that's a resistor in a ménage à trois with a pair of trannies hinding under the foam.
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PHOBoS



Joined: Jan 14, 2010
Posts: 5591
Location: Moon Base
Audio files: 705

PostPosted: Thu Feb 09, 2017 12:24 pm    Post subject: Reply with quote  Mark this post and the followings unread

you might want to put a heatsink on that
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LFLab



Joined: Dec 17, 2009
Posts: 497
Location: Rosmalen, Netherlands

PostPosted: Fri Feb 10, 2017 1:12 pm    Post subject: Reply with quote  Mark this post and the followings unread

Nifty way to mount the pcb, did you just glue that or is there something like interlocking features?
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Cfish



Joined: Feb 24, 2016
Posts: 477
Location: Indiana

PostPosted: Fri Feb 10, 2017 7:44 pm    Post subject: Reply with quote  Mark this post and the followings unread

Awesome attention to detaile noodle
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NoodleDriver



Joined: Jun 22, 2016
Posts: 30
Location: Ireland
Audio files: 5

PostPosted: Sat Feb 11, 2017 12:51 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks guys,

Yes, both. I milled a tenon out of the back of the face plate where the bracket and struts attach then epoxied it all together. An average panel takes about 10 mins to cut on the CNC router. The PCB in this pic took about 20 mins to cut (while I was drinking beer in the other room) Smile
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Skrog Productions



Joined: Jan 07, 2009
Posts: 1196
Location: Scottish Borders
Audio files: 155

PostPosted: Thu Feb 16, 2017 1:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

Nice build noodle , great way of mounting the board with the tenon Smile

Dave.
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fuji



Joined: Mar 08, 2017
Posts: 11
Location: milan
Audio files: 1

PostPosted: Wed Mar 08, 2017 3:57 am    Post subject: Reply with quote  Mark this post and the followings unread

my first diy synth built with many modules:
cv sequencers, gate sequences, gate to trig conv., lm358 vcos, 40106 xor drum noises, dividers, lm358 vcas, 2n3904 passive vcas, passive mixer, tl071 sallen-key filter and a 4094 16bit shift register, using single rail 9v


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blue hell
Site Admin


Joined: Apr 03, 2004
Posts: 24079
Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320

PostPosted: Wed Mar 08, 2017 11:55 am    Post subject: Reply with quote  Mark this post and the followings unread

fuji wrote:
my first diy synth built with many modules


welcome

looks nice Smile

When you have any sound samples from it - please post some as an attachment here Smile

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Jan
also .. could someone please turn down the thermostat a bit.
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fuji



Joined: Mar 08, 2017
Posts: 11
Location: milan
Audio files: 1

PostPosted: Wed Mar 08, 2017 4:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

Blue Hell wrote:
fuji wrote:
my first diy synth built with many modules


welcome

looks nice Smile

When you have any sound samples from it - please post some as an attachment here Smile



Yes! Here is a recording i made some days ago (it was a little bit different - only one vco and other things was missing)
Very Happy
https://soundcloud.com/frgm/modular-synth
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blue hell
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Joined: Apr 03, 2004
Posts: 24079
Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320

PostPosted: Thu Mar 09, 2017 2:55 am    Post subject: Reply with quote  Mark this post and the followings unread

Sorry, soundcloud needs flash, and I can not use that.
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Jan
also .. could someone please turn down the thermostat a bit.
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elmegil



Joined: Mar 20, 2012
Posts: 2177
Location: Chicago
Audio files: 16

PostPosted: Thu Mar 23, 2017 6:57 am    Post subject: Reply with quote  Mark this post and the followings unread

My 2017 DIY builds so far (not counting my own PCBs)


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fuji



Joined: Mar 08, 2017
Posts: 11
Location: milan
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PostPosted: Sun Mar 26, 2017 8:33 am    Post subject: Reply with quote  Mark this post and the followings unread

Blue Hell wrote:
Sorry, soundcloud needs flash, and I can not use that.

hi! i added it as attachment! btw sorry for late!


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blue hell
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Joined: Apr 03, 2004
Posts: 24079
Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320

PostPosted: Wed Mar 29, 2017 4:29 am    Post subject: Reply with quote  Mark this post and the followings unread

fuji wrote:
Blue Hell wrote:
Sorry, soundcloud needs flash, and I can not use that.

hi! i added it as attachment! btw sorry for late!


Thanks! sounds good :-)

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also .. could someone please turn down the thermostat a bit.
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prgdeltablues



Joined: Sep 25, 2006
Posts: 222
Location: UK
Audio files: 12

PostPosted: Wed Mar 29, 2017 6:08 am    Post subject: Reply with quote  Mark this post and the followings unread

Latest addition: MFOS four pole (24dB/Oct) VCF. Modded to include HP, BP, and Notch outputs in both four pole and two pole flavours. Also modded to include a shruthi/jupiter enhancement to the resonance loop that reduces the output drop as resonance increases, and boosts the higher frequencies.

Had a lot of difficulty with the self-oscillation - had to change several resistor values, and it still doesn't oscillate easily below about 700Hz (depends on the temperature!). No idea why that is.

Peter


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roglok



Joined: Aug 28, 2010
Posts: 202
Location: uptown

PostPosted: Thu Mar 30, 2017 12:49 am    Post subject: Reply with quote  Mark this post and the followings unread

fuji wrote:
my first diy synth built with many modules:
cv sequencers, gate sequences, gate to trig conv., lm358 vcos, 40106 xor drum noises, dividers, lm358 vcas, 2n3904 passive vcas, passive mixer, tl071 sallen-key filter and a 4094 16bit shift register, using single rail 9v


looks great. how's the workflow with crocodile clips? was that a budget decision?
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fuji



Joined: Mar 08, 2017
Posts: 11
Location: milan
Audio files: 1

PostPosted: Fri Mar 31, 2017 2:35 am    Post subject: Reply with quote  Mark this post and the followings unread

roglok wrote:
fuji wrote:
my first diy synth built with many modules:
cv sequencers, gate sequences, gate to trig conv., lm358 vcos, 40106 xor drum noises, dividers, lm358 vcas, 2n3904 passive vcas, passive mixer, tl071 sallen-key filter and a 4094 16bit shift register, using single rail 9v


looks great. how's the workflow with crocodile clips? was that a budget decision?

yes it was a budget decision, but i think it is also more fast in the building and in the playing phase Very Happy
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AlanP



Joined: Mar 11, 2014
Posts: 746
Location: New Zealand
Audio files: 41

PostPosted: Sun Apr 02, 2017 8:28 pm    Post subject: Reply with quote  Mark this post and the followings unread

Posted Image, might have been reduced in size. Click Image to view fullscreen.

It feels good to get a build done this year!

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Some issues with this -- the feedback pot works backwards (CV in, OTOH, works normally), and two pins on the THAT2181 needed swapping.

Otherwise, this is a very nice delay. Based on Ryan Williams' schematic for the PT2395.
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AlanP



Joined: Mar 11, 2014
Posts: 746
Location: New Zealand
Audio files: 41

PostPosted: Mon Apr 03, 2017 10:28 pm    Post subject: Reply with quote  Mark this post and the followings unread

Posted Image, might have been reduced in size. Click Image to view fullscreen.
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Seems to go good to me, this thing makes insane sounds.

Good news is that Bei Ling BL3207 and BL3102 clone chips work nicely (if at a low frequency range, don't expect to piss off the dog.) I still have to calibrate the V/Oct.

Good stuff, though!
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LFLab



Joined: Dec 17, 2009
Posts: 497
Location: Rosmalen, Netherlands

PostPosted: Tue Apr 04, 2017 6:22 am    Post subject: Reply with quote  Mark this post and the followings unread

Nice one Alan!
Any clock osc whine?

Still want to do a euro layout for the Blacet Time machine, that has clock controlled 5th order lowpass filters, seems like a very good idea.
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PHOBoS



Joined: Jan 14, 2010
Posts: 5591
Location: Moon Base
Audio files: 705

PostPosted: Wed Apr 05, 2017 6:18 am    Post subject: Reply with quote  Mark this post and the followings unread

nice modules alan, I like the color schema of the Karplus Strong one.
I wonder where you got the toggle switches as I have recently designed
some PCBs that use them but the switches I have seem to be just a tad
to high to use in combination with Thonkiconn jacks and yours seem to
leave enough space to even add a nut.

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SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube
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AlanP



Joined: Mar 11, 2014
Posts: 746
Location: New Zealand
Audio files: 41

PostPosted: Wed Apr 05, 2017 10:39 am    Post subject: Reply with quote  Mark this post and the followings unread

For the switch, it's just a Tayda on-off-on.

No clock bleed that I can hear.
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PHOBoS



Joined: Jan 14, 2010
Posts: 5591
Location: Moon Base
Audio files: 705

PostPosted: Thu Apr 06, 2017 7:27 am    Post subject: Reply with quote  Mark this post and the followings unread

ah ok, that's the same one I am using. I do notice yours seems to be flush with the PCB
which mine aren't so I guess you have a more suitable footprint for them. But good to
know they can fit.

_________________
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http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube

Last edited by PHOBoS on Fri Apr 28, 2017 6:44 am; edited 2 times in total
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RingMad



Joined: Jan 15, 2011
Posts: 427
Location: Montreal, Canada
Audio files: 4

PostPosted: Thu Apr 20, 2017 2:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

The Bag Balm Box is "for bunches, caked bags, cuts, sore teats, chapping and inflammation". Bag Balm is a salve developed over 110 years ago to soothe irritation on cows' udders after milking but also used by humans for dry, chapped skin. I loved the container artwork, so after finally finishing the contents (which took several years), I decided to put in a little sound-making circuit, which is a slightly tweaked version of the Space4069 schematic by Synaesthesia. It uses CMOS 4069 to generate waveforms which feed a 4046 VCO. See thread http://electro-music.com/forum/topic-63269.html .

Two potentiometers on the left control the oscillator rates, two 3-position switches on each side to control the wave shapes of each (sawtooth, triangle, reverse sawtooth), plus frequency and volume controls. On the back, the on/off switch, the range switch (high, low), and the output jack. Through the eye of the cow, a white LED indicates that the power is on (9V battery).

I was thinking of somehow making some knobs that looked like cow udders, but got lazy because I have many other projects on the pile.

Here is the Bag Balm Box demo video: https://youtu.be/DrY-9-HWl7A

.:James:.


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