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| Page 1 of 4 [90 Posts] | Goto page: 1, 2, 3, 4 Next |
| Author | Message |
|---|---|
 Topic: 2013 Build Pictures |
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| bearblock Replies: 177 Views: 162888 |
Posted: Tue Dec 03, 2013 10:03 am Subject:
Pressure Pad Array
Forum: DIY Hardware and Software |
| I've been experimenting with these new Interlink force sensing resistors. Ended up with this box which contains 8 of them, each with independent pressure CV outs.
There's also some CMOS logic for s ... |
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| Topic: emitter follower to multiple comparators |
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| bearblock Replies: 4 Views: 2054 |
Posted: Sun Sep 01, 2013 12:16 pm Subject:
emitter follower to multiple comparators
Forum: DIY Hardware and Software |
| Thanks guys
you should have another resistor in series with the emitter and IN+ Yep this has fixed it  i put a 10k in there and it's behaving. |
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| Topic: emitter follower to multiple comparators |
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| bearblock Replies: 4 Views: 2054 |
Posted: Sat Aug 31, 2013 11:12 am Subject:
emitter follower to multiple comparators
Forum: DIY Hardware and Software |
| Hi, I've been playing around with the attached circuit and having trouble squashing one bug in particular. Any help much appreciated.
The idea is to compare 2 analogue signals to reference voltage ... |
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| Topic: Serge Universal Audio Processor |
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| bearblock Replies: 6 Views: 3897 |
Posted: Sun Aug 04, 2013 8:23 am Subject:
Serge Universal Audio Processor
Forum: DIY Hardware and Software |
| Thanks DG303 looks perfect. |
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| Topic: Serge Universal Audio Processor |
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| bearblock Replies: 6 Views: 3897 |
Posted: Sat Aug 03, 2013 1:55 pm Subject:
Serge Universal Audio Processor
Forum: DIY Hardware and Software |
| It looks like the behaviour I'm after would need a 6P3T switch, which don't exist AFAIK, so I'm looking at using 3 x DPDT analog switch ICs. I can't find any in DIP packages though, does anyone know o ... | |
| Topic: Serge Universal Audio Processor |
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| bearblock Replies: 6 Views: 3897 |
Posted: Thu Jun 13, 2013 3:44 am Subject:
Serge Universal Audio Processor
Forum: DIY Hardware and Software |
Awesome, thanks!  I'll have to have a proper look at the documentation when I get back from work.
I would like the module I make to also have the third mode which decouples the VCAs and lets yo ... |
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| Topic: Serge Universal Audio Processor |
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| bearblock Replies: 6 Views: 3897 |
Posted: Mon Jun 10, 2013 2:56 am Subject:
Serge Universal Audio Processor
Subject description: Pan / Crossfade / Dual VCA Forum: DIY Hardware and Software |
| This sounds like an incredibly useful module, and I was wondering if anyone in this community has ever tried to clone it, or maybe had the same idea independently?
As I understand it, this circuit ... |
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| Topic: LTSpice V |
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| bearblock Replies: 3 Views: 12955 |
Posted: Mon Jan 31, 2011 12:56 pm Subject:
LTSpice / LM13700 / Jerkster
Forum: DIY Hardware and Software » Developers' Corner |
| hi - thought i'd resurrect this thread instead of making a new one since my query is pretty closely related.
i'm working on a new circuit that will probably end up using LM13700s, so i've imported ... |
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| Topic: freepcb |
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| bearblock Replies: 11 Views: 7251 |
Posted: Wed May 13, 2009 4:41 pm Subject:
freepcb
Forum: DIY Hardware and Software » Developers' Corner |
| hello again frijitz,
i just found your post on the freepcb forums from back in aught seven: I've just discovered (the hard way: dollars down the drain) that the footprint for the TO92 transistor ... |
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| Topic: freepcb |
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| bearblock Replies: 11 Views: 7251 |
Posted: Sat Dec 06, 2008 5:45 am Subject:
freepcb
Forum: DIY Hardware and Software » Developers' Corner |
| nice one Ian
i've sent the files off and paid now, so hopefully i'll be posting about this project again in the new year, once i've written some firmware... |
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| Topic: freepcb |
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| bearblock Replies: 11 Views: 7251 |
Posted: Thu Dec 04, 2008 7:52 am Subject:
freepcb
Forum: DIY Hardware and Software » Developers' Corner |
| hi! a few more queries...
i think i've found a good deal for pcb fabrication (pcbcart.com). they require me to supply some info with the Gerber files: Please double check "Min. Tracing/Spac ... |
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| Topic: freepcb |
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| bearblock Replies: 11 Views: 7251 |
Posted: Sun Nov 30, 2008 2:09 pm Subject:
freepcb
Forum: DIY Hardware and Software » Developers' Corner |
| thanks ian! i exported gerber files and opened them in ViewMate - sure enough the soldermask layers have all the pads marked. the board is pretty much done now; freepcb is an awesome tool, so easy to ... | |
| Topic: freepcb |
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| bearblock Replies: 11 Views: 7251 |
Posted: Sat Nov 29, 2008 4:20 am Subject:
freepcb
Subject description: anyone use this? Forum: DIY Hardware and Software » Developers' Corner |
| hi,
i thought it was time i learned how to design pcbs; so i've been putting together a 'vc sequencer brain' in freepcb. this is all basic 2-layer, through hole stuff. it's going pretty well, b ... |
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| Topic: pitch class quantizer |
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| bearblock Replies: 13 Views: 17846 |
Posted: Tue Sep 23, 2008 9:21 am Subject:
pitch class quantizer
Forum: DIY Hardware and Software » Microcontrollers and Programmable Logic |
| hey sneak
the code is good to go. like you, i'm less sure about the analog side of things however... my prototype probably could be calibrated better, but the procedure is this: 1) patch ... |
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| Topic: Getting Started |
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| bearblock Replies: 22 Views: 13897 |
Posted: Fri Aug 29, 2008 12:08 pm Subject:
Getting Started
Forum: DIY Hardware and Software » Microcontrollers and Programmable Logic |
| To call someone an idiot for using a particular design methodology has no place here in our forum. I am sure you agree on that as it sounds like your opposed to this sort of behavior also Wink
r ... |
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| Topic: Getting Started |
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| bearblock Replies: 22 Views: 13897 |
Posted: Fri Aug 29, 2008 4:33 am Subject:
Getting Started
Forum: DIY Hardware and Software » Microcontrollers and Programmable Logic |
| hi, youre right that PIC assembler isn't too difficult. I still much prefer the design of the AVR instruction set though. I agree that programming in asm teaches you more about your chip of choice, pl ... | |
| Topic: Getting Started |
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| bearblock Replies: 22 Views: 13897 |
Posted: Thu Aug 28, 2008 6:06 am Subject:
Getting Started
Forum: DIY Hardware and Software » Microcontrollers and Programmable Logic |
| Lady Ada is awesome. My findings are quite similar to hers - PIC and AVR are very much alike, but if you want to program in assembler (who doesn't, amirite?) then AVR is much more straightforward. avr ... | |
| Topic: Quantizer module - any suggestions? |
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| bearblock Replies: 25 Views: 31188 |
Posted: Wed Aug 13, 2008 6:31 am Subject:
Quantizer module - any suggestions?
Forum: Instruments and Equipment » Modular Synthesis |
| dave/phil, you might be interested in this thing i made? still just a prototype, mind.
http://electro-music.com/forum/topic-26667.html |
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| Topic: CGS-34 Analog Shift Register |
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| bearblock Replies: 18 Views: 21896 |
Posted: Thu Aug 07, 2008 8:15 am Subject:
CGS-34 Analog Shift Register
Forum: DIY Hardware and Software » Ken Stone designs - CGS |
| funkyfarm: did you look at the link?
http://www.ear-group.net/asring.jpg if you still don't understand, i give up. |
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| Topic: CGS-34 Analog Shift Register |
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| bearblock Replies: 18 Views: 21896 |
Posted: Thu Aug 07, 2008 1:31 am Subject:
CGS-34 Analog Shift Register
Forum: DIY Hardware and Software » Ken Stone designs - CGS |
| 3 stages, three outputs, no ?
0°, 120° and 240° no. the ASR really isn't a "cv delay" in the sense you are thinking. it's more like an multi-stage sample and hold, and sampl ... |
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| Topic: pitch class quantizer |
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| bearblock Replies: 13 Views: 17846 |
Posted: Fri Aug 01, 2008 8:50 am Subject:
 pitch class quantizer
Forum: DIY Hardware and Software » Microcontrollers and Programmable Logic |
| hey, i am indeed using +5v for the mcu and 'plexers. the dac is just a r/2r discrete design so it is powered by the mcu. re. the 'plexers, i would suggest using a digital type like hc151, ac151 etc - ... | |
| Topic: CGS-34 Analog Shift Register |
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| bearblock Replies: 18 Views: 21896 |
Posted: Tue Jul 29, 2008 10:45 am Subject:
CGS-34 Analog Shift Register
Forum: DIY Hardware and Software » Ken Stone designs - CGS |
| i also had some trouble getting my ASR to track accurately enough for melodic stuff... and i used 0.1% resistors. ended up having to install some trim pots around the input amp, now it's much better. ... | |
| Topic: simple vco for baby 10 ?? |
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| bearblock Replies: 7 Views: 4240 |
Posted: Tue Jul 29, 2008 10:29 am Subject:
simple vco for baby 10 ??
Forum: DIY Hardware and Software |
| i tried mimms simple 555 vco, but since it has a constant tone that it deviates from depending on the cv input, i cant use rests....
that's actually how most vcos work... the volume control is don ... |
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| Topic: DIY Waveshaper available |
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| bearblock Replies: 20 Views: 11793 |
Posted: Sun Jul 27, 2008 7:27 am Subject:
DIY Waveshaper available
Forum: DIY Hardware and Software |
looks to be about 50% there  vca but no voltage control of the shape resistance in the shaper core. don't get me wrong, it's a great setup that i often emulate with a spare vca or lowpass gate ... |
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| Topic: DIY Waveshaper available |
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| bearblock Replies: 20 Views: 11793 |
Posted: Sun Jul 27, 2008 6:50 am Subject:
DIY Waveshaper available
Forum: DIY Hardware and Software |
| http://home.debitel.net/user/jhaible/jh_wavefolder.html
i can't get enough of juergen's serge-inspired shapers he details here. specifically 'shaper b'. i found the output to be a bit quiet for my ... |
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