TOM WHITSHIRE VCLFO PCB

haxster · Posted: Mon Jun 01, 2009 1:58 am Post subject:

No problem on downgrading or bailing out. Everything will get sold anyhow.

haxster · Posted: Mon Jun 01, 2009 11:02 am Post subject:

SUMMARY FOR REV1.1 PCB TOM WILTSHIRE VCLFO
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BUILDERS: AS SOON AS YOU GET THE PCB PM ME, OR EMAIL ME (IF YOU REMEMBER MY EMAIL) AND I CAN SEND YOU A ZIP WITH THE LAYOUT AND LITE VERSION PROGRAM SO YOU CAN VIRTUALLY TEST TRACES AND SEE UP CLOSE IF SOMETHING DOES NOT MAKE SENSE. IT MAKES IT A WHOLE LOT EASIER. BUILD TIME IS ABOUT 2 HOURS.

*clickmrmike (1) paid (SENT)
*creatorlars (1) paid (SENT)
*BBOB (2) PAID (SENT)
*NUMBERTALK (1) paid (SENT)
*SDUCK (1) paid (sent)

TO BE MAILED JUNE 01, 2009
*EGRAD (1) paid
*henrikgo (1) paid
*ADAMBEE7 (2) paid

They paid already:
*KITSHCH-BENT (4)
*factus10 (1)
*MONOPOLY (2)

*************************************************************
ANOTHER ORDER HAS BEEN PLACED FOR (20) MORE 2ND RUN TOM WHILTSHIRE PCB'S---JUNE 1, 2009. EXPECTED ARRIVAL JUNE 10-11.
THE 2ND RUN IS OFFICIALLY ERROR FREE. SILKSCREEN MISTAKES HAVE BEEN FIXED AND NO MORE JUMPERS.THE NAME TAG ON THIS BOARD IS REV 1.2

THIS IS THE LIST I HAVE SO FAR FOR RESERVE:

JULIANW (2)
RECOMPAS (1)
ach_gott (2)
LUKA (4) MAYBE(2)
Funky40 (2)
The Alison Project (4)

just added:
Danno Gee Ray (1)
Dego (1)
a100user (1)
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Waiting for The Alison Project (4),
everyone else paid and shipped out for 2nd run
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Danno Gee Ray · Joined: Sep 25, 2005 Posts: 1351 Location: Telford, PA USA

I'd be interested in one set.

Thanks

Dan

TekniK · Joined: Aug 10, 2008 Posts: 1059

Hi,would like to ask u,if there is an onboard protected external CV input for waveform selection and distortion on top of the '5v pot CV's inputs'

cheers

haxster · Posted: Mon Jun 01, 2009 5:01 pm Post subject:

Looks like you have been studying the possibilities on the 0-5v inputs on the pic pins. I am way ahead of you and thought about that yesterday too. I came up with this layout and basically copied what i did with the Freq CV input. I don't know if I will make this board, I just got it out of the way for now. PM if you want the zip to have it made like right now. The difference is I chucked the Analog LFO's and laid out all the possible CV inputs for LEVEL, SH rate, and DISTORTION,

As far as CV input protection, it is going from jack to 100k, then to a TL072 ic (-) side of the op-amp, standard basic stuff. There is no ~10v Zener Diode or anything like that. i don't recommend just doing a hack directly onto the pins of the Pic with just an input jack, if your gonna add the cv capabilities jumper onto another protoboard with those TL072 buffers like on the PDF. Digital chips get easily damaged if you input more then 5v. The circuit was originally designed for 15v usage so there should not be a problem.

DONOT GET CONFUSED WITH THIS PICTURE, THIS IS NOT THE BOARD THAT WAS ORDERED FOR THE 2nd RUN!!

This pic is just to share and answer a question.

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Dego · Joined: Apr 22, 2008 Posts: 139 Location: Sweden

I would like to have a pcb please. Cool

TekniK · Joined: Aug 10, 2008 Posts: 1059

Thanks for reply haxter

Luka · Joined: Jun 29, 2007 Posts: 1003 Location: Melb.

could you have the circuit for the distortion and extra cv inputs
would make a nice daughter board

TekniK · Joined: Aug 10, 2008 Posts: 1059

a100user · Joined: Oct 28, 2003 Posts: 158 Location: UK

I'll take a PCB and burned PIC please?

Not sure how I'll cram it behind a euro panel but I'll worry about that later.

Let me know when you require payment.
Thanks
David

haxster · Posted: Tue Jun 02, 2009 7:43 am Post subject:

haxster · Posted: Tue Jun 02, 2009 8:05 am Post subject:

Here is the CV input circuit, the control knob for that input you decide to midify goes to a 5k resistor then to Main Analog positive voltage instead of 5v. I just noticed on the PCB i posted above(not the 2nd run/don't worry) i forgot to do that Embarassed

. That's already fixed.

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TekniK · Joined: Aug 10, 2008 Posts: 1059

adambee7 · Joined: Apr 04, 2009 Posts: 420 Location: united kingdom

Boards arrived. Cheers man. Very Happy

numbertalk · Posted: Sat Jun 06, 2009 4:09 am Post subject:

Board made it to Brooklyn and got your email with the zip file. Thanks!!

e-grad · Joined: Sep 12, 2008 Posts: 142 Location: Berlin

Just have received the board and pic. Even though s.o. attempted to smash the box everything seems to be in OK condition. Thanks!!!

haxster · Posted: Mon Jun 08, 2009 6:41 pm Post subject:

2nd Run is now closed
****************************************************************
THIS IS THE LIST I HAVE:
2ND RUN TOM WILTSHIRE PCB
------------------------------------
JULIANW (2)
RECOMPAS (1)
ach_gott (2)
LUKA (2-4) (NOTE FOR ME: POSSIBLE 2 LEFTOVER)
Funky40 (2)
The Alison Project (4)
Danno Gee Ray (1)
Dego (1)
a100user (1)
loopcycle (2)

I will PM you FRIDAY or SATURDAY, THEY SHOULD ARRIVE TO ME FRIDAY. I begin to ship out SATURDAY/MONDAY.

loopcycle · Joined: Nov 06, 2006 Posts: 101 Location: California

received the boards on monday, thanks!

a100user · Joined: Oct 28, 2003 Posts: 158 Location: UK

What is the function of the 6 switches (2 DPDT, 2 SPDT and 2 on/off/on)?

Thanks

David

haxster · Posted: Fri Jun 19, 2009 11:24 am Post subject:

The six switches are for the Analog LFO only. 3 is for (1) Analog LFO, so the other (3) just mirrors.

Time Switch(SPDT): toggles between (2) Capacitor values to give you 2 ranges in speed.

SQUARE ON/OFF(DPDT) switch: turns the square on/off

Shape Switch (SPDT) w/ center off: toggles shapes---Saw up/triangle(center off)/ saw down.

The simple LFO was influenced from Ray Wilson's SoundLab Plus and modified with the Time Modification.
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Download this to help you zoom in and see the pcb if you cannot read a value or get confused.
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To also sum it up:
Rev1.1 requires Jumpers

Rev1.2 does not require jumpers

TW_VCLFO(Lite pack).zip

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TW_VCLFO(Lite pack).zip

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a100user · Joined: Oct 28, 2003 Posts: 158 Location: UK

Thanks Haxster

Looking forward to building this.

David

haxster · Posted: Sat Jun 20, 2009 10:29 am Post subject:

This will help when adjusting the 3 trimmers.

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haxster · Posted: Sat Jun 20, 2009 10:32 am Post subject:

I built a Motm style one yesterday populating the digital LFO only.
The pic shows Rev 1.1 with the 2 jumpers needed on the pots.

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Luka · Joined: Jun 29, 2007 Posts: 1003 Location: Melb.

pcbs arrived
the package when through inspection / quarantine :/
weird. i hope the PICs are ok

Funky40 · Posted: Thu Jun 25, 2009 12:17 pm Post subject:

got my boards, thanks alot Haxter !