My twin SN-Voice

State Machine · Posted: Fri Feb 23, 2007 3:16 pm Post subject:

Here is a list of the connector housings, headers and pins used for the SN Voice Board.

Housing: Molex PN 10-11-2123 (Digikey WM2611-ND)
Header: Molex PN 22-23-2121 (Digikey WM4210-ND)
Connector Terminal Molex PN 08-50-0114 (Digikey WM1114-ND)

Also, if you are not willing to solder the terminals and prefer a more professional gas tight "crimp" connection, here is a link to Mouser that sells a fairly inexpensive crimp tool to do the job.

http://www.mouser.com/search/refine.aspx?Msid=53810000&Mkw=640160042

Bill

Scott Stites · Posted: Fri Feb 23, 2007 3:39 pm Post subject:

Here 'tis.

Cheerios,
Scott

pot_wiring_442.pdf

Description:

Download (listen)

Filename:

pot_wiring_442.pdf

Filesize:

87.29 KB

Downloaded:

341 Time(s)

State Machine · Posted: Fri Feb 23, 2007 4:13 pm Post subject:

bambam · Joined: Feb 20, 2007 Posts: 60 Location: australia

Hi Again

I was wondering if by chance was there a differnt part list that should ahve been sent also with the pcb's? I realise di was missing the pot wiring diagrams which Bill has forwarded me....big thanks to Bill for doing that while sick with the flu!

I only ask about the parts list as i sat down to finish this up yesterday and found parts that are on the PCB but not on the list and also the reverse Sad

I cannot find R64 on the parts list or R65 (i think its R65 but its a bit hard to tell as the printing has holes through it but its the resistor next to the sn76477 and it appears to connect to pin 26)
I also dont have C23 or C24 on the parts list.

The list has a C15 listed but for the life of me i cant find this on the PCB Sad

I have a feeling the parts list i grabbed from http://mypeoplepc.com/members/scottnoanh/anatomyofthesnvoice/ is probably not for the final PCB. Am I right and if so where can i find the correct parts list? I'm hoping the parts i've already installed havent changed otherwise i've got alot of part removal to do.

Thanks
Brett

kryptic · Joined: Feb 16, 2007 Posts: 40 Location: somewhere

From the list Bill sent me w/my PCBs:

"Additional components and notes for sMs PCBs-

Resistors
R64, R65 100K

Capacitors
C23, C24 0.01 uF disc

Semiconductors
IC5 78L05 5V Linear Regulator

NOTES:
C15 Mounted at S1 on control panel
LM394 should be ordered in the DIP package"

Hope that helps a bit

State Machine · Posted: Sun Mar 04, 2007 8:46 pm Post subject:

bambam · Joined: Feb 20, 2007 Posts: 60 Location: australia

Thanks heaps Kryptik!!!!
And thanks to bill for confirming Wink

Don't stress Bill we all have bad days.....well i know i do anyway.
The main thing is what i've added so far is correct so no desoldering!!!

Brett

fonik · Posted: Fri Mar 09, 2007 4:36 pm Post subject:

State Machine · Posted: Sat Mar 10, 2007 4:26 pm Post subject:

fonik · Posted: Sat Mar 10, 2007 4:57 pm Post subject:

CJ Miller · Joined: Jan 07, 2007 Posts: 368 Location: 127.0.0.1

He he... last month I was putting what I thought were 10k resistors on a board. I soldered one of twenty or so before I noticed that the color code was wrong. It was late and I very nearly soldered 20x4=80 of the wrong resistors. Of about thirty values I bought from somebody these were the only ones wrong, if I recall they ended up being 137k. This year I have been switching over to 1% metal film resistors so I have to look more closely to see the bands. Except for some Dale resistors which have the numbers instead.

Anyway, now each time I grab a value of resistors I test them with my meter first.

Happy that your troubleshooting is going well! With any luck my 100pF and 470pF caps will be here monday so I can hear these in action!

Uncle Krunkus · Posted: Sun Mar 11, 2007 4:22 am Post subject:

I found that all the 30K resistors I had were actually 300K. (after using one and tracking down the fault) Assuming that it was just a silly error on my part, I put them all in the 300K compartment, and ordered some 30Ks. When they arrived, I noticed that I had another 5 bags of 300K resistors, labelled as 30K!

The moral to the story: -

Everyone has bad days.

&

Check what your soldering into your boards!

PS They say a good carpenter measures twice, and cuts once. Maybe a good technician should check twice and solder once.

State Machine · Posted: Sun Mar 11, 2007 2:58 pm Post subject:

State Machine · Posted: Sun Mar 11, 2007 3:01 pm Post subject:

State Machine · Posted: Sun Mar 11, 2007 3:04 pm Post subject:

fonik · Posted: Sun Mar 11, 2007 4:12 pm Post subject:

State Machine · Posted: Sun Mar 11, 2007 4:26 pm Post subject:

sneakthief · Joined: Jul 24, 2006 Posts: 569 Location: Berlin

Does anybody have a spare sn76477 for sale?

My twin wishes to become a veritable trifecta Cool

krisp14u · Joined: Nov 11, 2006 Posts: 206 Location: uk

fonik · Posted: Sun Mar 11, 2007 5:41 pm Post subject:

Adam-V · Posted: Thu Mar 15, 2007 6:59 pm Post subject:

Hi guys, here's a rough design of a Doepfer styled front panel I intend to use for my SN Voice modules.

Cheers,
Adam-V

EDIT: Attached layout updated with a newer version due to the loss of the original in the great (or not so great depending on your opinion) crash of 2007. Also added the panel description document.

SN-VoiceFrontPanelLayout(Adam-V).pdf

Description:

Doepfer Style Front Panel

Download (listen)

Filename:

SN-VoiceFrontPanelLayout(Adam-V).pdf

Filesize:

64.2 KB

Downloaded:

304 Time(s)

SN-VoiceFrontPanelDetails(Adam-V).pdf

Description:

Panel and circuit designations for this layout

Download (listen)

Filename:

SN-VoiceFrontPanelDetails(Adam-V).pdf

Filesize:

17.1 KB

Downloaded:

277 Time(s)

Uncle Krunkus · Posted: Thu Mar 15, 2007 8:56 pm Post subject:

That looks great!
Some of the dial labels are a little bit cramped, but maybe if you dropped the knob diameter a tad it would fit better. Very function layout though. Makes me want to build one.

fonik · Posted: Thu Mar 15, 2007 11:58 pm Post subject: