| interested in a PCB or 4? |
| yep |
|
98% |
[ 151 ] |
| nope |
|
1% |
[ 2 ] |
|
| Total Votes : 153 |
|
| Author |
Message |
blue hell
Site Admin
Joined: Apr 03, 2004
Posts: 24539
Location: The Netherlands, Enschede
Audio files: 299
G2 patch files: 320
|
 Posted: Wed Jul 23, 2008 2:37 pm Post subject:
|
  |
|
At what frequency did you look at the wave forms, and was it the same frequency in both cases?
_________________
Jan
also .. could someone please turn down the thermostat a bit.
 |
|
|
Back to top
|
|
 |
zthee
Joined: Feb 20, 2008
Posts: 414
Location: Stockholm
|
| Posted: Wed Jul 23, 2008 3:16 pm Post subject:
|
|
|
| Blue Hell wrote: |
At what frequency did you look at the wave forms, and was it the same frequency in both cases? |
Yes, and yes.
To me it's confusing and wierd.. I still belive it's a power supply issue, but I don't know how to solve it.. |
|
|
Back to top
|
|
|
blue hell
Site Admin
Joined: Apr 03, 2004
Posts: 24539
Location: The Netherlands, Enschede
Audio files: 299
G2 patch files: 320
|
| Posted: Wed Jul 23, 2008 4:04 pm Post subject:
|
|
|
Yes Hz of yes kHz? 
It looks like the wave got flattened due to capacitive coupling, but for a 5 kHz wave this could be acceptable, not so for a 50 Hz wave though.
_________________
Jan
also .. could someone please turn down the thermostat a bit.
|
|
|
Back to top
|
|
|
toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
|
| Posted: Wed Jul 23, 2008 4:23 pm Post subject:
|
|
|
| you checked that the CMOS is getting 10V? |
|
|
Back to top
|
|
|
Rykhaard
Joined: Sep 02, 2007
Posts: 1290
Location: Canada
|
| Posted: Wed Jul 23, 2008 9:49 pm Post subject:
|
|
|
I don't know if this could be the case but since you're using 1/4" connectors, they're all Grounding to your aluminiunium (Sp??  ) panel. I wonder if you could have a Ground short, from something??
(Still having to build mine. (sigh)) |
|
|
Back to top
|
|
|
Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
Audio files: 3
|
| Posted: Thu Jul 24, 2008 12:00 am Post subject:
|
|
|
| Wait a second! Ryk Thekreator?! I've been wondering where you've been for years, and there you are! Dude! So glad to see you around, and staying busy with the synth stuff! |
|
|
Back to top
|
|
|
zthee
Joined: Feb 20, 2008
Posts: 414
Location: Stockholm
|
| Posted: Thu Jul 24, 2008 2:33 pm Post subject:
|
|
|
Blue Hell,  It looks the same in both Hz and KHz..
Topp, I'll doublecheck it!
Thanks guys! |
|
|
Back to top
|
|
|
blue hell
Site Admin
Joined: Apr 03, 2004
Posts: 24539
Location: The Netherlands, Enschede
Audio files: 299
G2 patch files: 320
|
| Posted: Thu Jul 24, 2008 2:49 pm Post subject:
|
|
|
| zthee wrote: | | It looks the same in both Hz and KHz.. |
That's bad
_________________
Jan
also .. could someone please turn down the thermostat a bit.
|
|
|
Back to top
|
|
|
toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
|
| Posted: Thu Jul 24, 2008 5:46 pm Post subject:
|
|
|
update: we are a little over 1/2 way to a 2nd run..
so if you want any/more, now is the time to speak up.... |
|
|
Back to top
|
|
|
Rykhaard
Joined: Sep 02, 2007
Posts: 1290
Location: Canada
|
| Posted: Thu Jul 24, 2008 9:08 pm Post subject:
|
|
|
| Peake wrote: | | Wait a second! Ryk Thekreator?! I've been wondering where you've been for years, and there you are! Dude! So glad to see you around, and staying busy with the synth stuff! |
Wait ...... is it Mike Peake??  As soon as I read what you just writ above, the first name came back to me - I THINK. Please rem'ber - me gettin' old. 
Now, are we speaking Synth-DIY or ...... I think Analogue Heaven, wasn't it??? I don't think as far back as rec.music.synth in '92 or so .... ?
Aye. Disappeared in '98 or '99 from just about everywhere. (Bad 'no get up and go' time in life, for a few years. Moved to Propellerheads Reason from '01 to '06; started building again finally in middle of '05, fully waking up and dumping Reason in early '06 and DAMN glad to be back!
Still trying to find a couple of people also. Have been since coming back to building, with no luck.  Roy Tate - know where he might be, by chance?
What YOU up ta? |
|
|
Back to top
|
|
|
Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
Audio files: 3
|
| Posted: Thu Jul 24, 2008 10:03 pm Post subject:
|
|
|
Ryk, check your PM.
Josh, I'd take yet another six boards. Thanks! |
|
|
Back to top
|
|
|
funkyfarm
Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3
|
| Posted: Sat Jul 26, 2008 4:07 pm Post subject:
|
|
|
Hi,
I'm sorry but i didn't understand why you went for separate GATE/TRIG sockets...you can't patch them both at the "same" time (for retriggering)
that's the function switch that matters ? |
|
|
Back to top
|
|
|
loopcycle
Joined: Nov 06, 2006
Posts: 101
Location: California
|
| Posted: Sat Jul 26, 2008 11:43 pm Post subject:
|
|
|
| i would like to get on the list for four pcbs. |
|
|
Back to top
|
|
|
numbertalk
Joined: May 05, 2008
Posts: 992
Location: Austin, TX
Audio files: 5
|
| Posted: Mon Jul 28, 2008 3:32 pm Post subject:
|
|
|
We there yet?
| topp wrote: | update: we are a little over 1/2 way to a 2nd run..
so if you want any/more, now is the time to speak up.... |
|
|
|
Back to top
|
|
|
toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
|
| Posted: Mon Jul 28, 2008 4:34 pm Post subject:
|
|
|
| Quote: | | josh, where do you get your switch caps? |
sorry i didn't see this.. the switch caps i aquired with some old junk i can't remember where.. aren't theybasically the same as the ones available through mouser? maybe less glossy.
| Quote: | | We there yet? Smile |
not quite.. maybe a dozen more or so? |
|
|
Back to top
|
|
|
a_guy_called_tom
Joined: Jun 21, 2008
Posts: 31
Location: mountains
|
| Posted: Tue Aug 05, 2008 10:52 am Post subject:
|
|
|
Hi all,
i'm having a problem with my env, the attack and decay times seem to be very very short. In cycle mode i can hear that the cycle is very short (audio frequency) and seems to change only very slightly when i turn VR2 or VR1. Since i dont understand really much about the circuit, does anyone have an idea what could cause this or give me a pointer at which parts to look?
Another thing, if i dont attach the LEDs, is it still necessary to have R33 and R30? I inserted the resistors but dont have any LEDs yet and i'm not quite sure about how to calculate the right values for the Resistors.
Any help would be much appreciated,
Tom |
|
|
Back to top
|
|
|
toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
|
| Posted: Tue Aug 05, 2008 3:51 pm Post subject:
|
|
|
| hi, when you turn the trim pot, does the frequency change? do you have an oscilloscope? are you 100% certain you have all wires connected properly? |
|
|
Back to top
|
|
|
ericcoleridge
Joined: Jan 16, 2007
Posts: 889
Location: NYC
|
| Posted: Tue Aug 05, 2008 4:07 pm Post subject:
|
|
|
I also have question--haven't finished my boards, but:
I installed my quadrature circuitry on my "A" boards by accident-- I wasn't reading carefully enough, I guess.
Is there any reason why they wouldn't work correctly here? They are my "A" boards, because besides the quad circuit, they're assembled according to "A" parts list.
Obviously, it wouldn't be too much to change this, or to add the quad circuitry to "B" boards, but if there's no reason to--I rather not.
Any suggestions? Thanks |
|
|
Back to top
|
|
|
toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
|
| Posted: Tue Aug 05, 2008 4:30 pm Post subject:
|
|
|
| no no difference, just wire it up as it's shown. |
|
|
Back to top
|
|
|
ericcoleridge
Joined: Jan 16, 2007
Posts: 889
Location: NYC
|
| Posted: Wed Aug 06, 2008 8:01 am Post subject:
|
|
|
| Thanks Topp. I'm glad to know this... |
|
|
Back to top
|
|
|
a_guy_called_tom
Joined: Jun 21, 2008
Posts: 31
Location: mountains
|
| Posted: Wed Aug 06, 2008 9:55 am Post subject:
|
|
|
| Quote: | | hi, when you turn the trim pot, does the frequency change? do you have an oscilloscope? are you 100% certain you have all wires connected properly? |
when i turn the trim pot, the frequency changes, but not as much as i'd expect (maybe from 800Hz to 850Hz in cycle mode or something like this, just guessing). Unfortunately i dont have an oscilloscope here, but i'll certainly doublecheck my wires again and also the caps values.
Thanks for helping! |
|
|
Back to top
|
|
|
toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
|
| Posted: Wed Aug 06, 2008 3:53 pm Post subject:
|
|
|
ok, it looks like we have enough preorders for a 2nd run. i am emailing everyone for confirmation, as soon as i have that, i can place the order...
@ a_guy_called_tom:
it sounds like something could be up around the current source. what FET and zener did you use? do you have a DMM? double check resistor values and all solder joints.
ok good luck, it's probably something simple. |
|
|
Back to top
|
|
|
a_guy_called_tom
Joined: Jun 21, 2008
Posts: 31
Location: mountains
|
| Posted: Wed Aug 06, 2008 10:15 pm Post subject:
|
|
|
| Quote: | it sounds like something could be up around the current source. what FET and zener did you use? do you have a DMM? double check resistor values and all solder joints.
ok good luck, it's probably something simple. |
For the zener i use a BZX85B10 and the MPF-102 is replaced with a BF245B. Yeah, i have a DMM. Will check the joints and values again. Thanks for the hints! |
|
|
Back to top
|
|
|
toppobrillo
Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1
|
| Posted: Thu Aug 07, 2008 2:50 am Post subject:
|
|
|
| Quote: | | the MPF-102 is replaced with a BF245B |
you realize the pinout is reverse, right? |
|
|
Back to top
|
|
|
a_guy_called_tom
Joined: Jun 21, 2008
Posts: 31
Location: mountains
|
|
|
Back to top
|
|
|
|
Forum index » DIY Hardware and Software
FAQ
Calendar
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
Chat Room
