If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #1628
Joined: Wed Aug 06 2008, 08:48PM
Location: Huntsville, AL USA
Posts: 95
I have a EVR staccato board. How could I test it to make sure it is working without an oscope? When I power it up the power led comes on but thats it, should the other led blink with the output?
Registered Member #1628
Joined: Wed Aug 06 2008, 08:48PM
Location: Huntsville, AL USA
Posts: 95
I'm having no luck building my own staccato board. I'm not sure what I'm doing wrong. I've built 2 boards but I can't get either to work. does anyone have a populated working staccato board they want to sell? Is anyone interested in building a board for me? Thanks in advance.
Registered Member #1628
Joined: Wed Aug 06 2008, 08:48PM
Location: Huntsville, AL USA
Posts: 95
Special thanks to Dr. Spark for repairing my staccato board. I just have a quick question. Can I use a 25.2vct transformer to power the board or is that pushing it. The 7812 regulator datasheet says it recommends a 19v input. If 25.2vct is not enough and I doubt it is can I use a regular non center tapped transformer? If so what would be a good recommended voltage? Or a combination of 2 transformers? I would just order a 28vct but atm I'm really strapped for cash. Btw my staccato board is the EVR type. Thanks in advance, Garry Neeley
Registered Member #1628
Joined: Wed Aug 06 2008, 08:48PM
Location: Huntsville, AL USA
Posts: 95
Today I am troubleshooting my staccato card. All my signals look good except on the output of the card I can only vary pulse width with the onboard pot. I can't vary bps with the extended pot. When i turn the extended pot the led does vary from slow to faster but the output signal stays the same. Anybody know what could be goiong on?
Registered Member #2838
Joined: Fri Apr 30 2010, 07:55PM
Location: tehachapi, CA
Posts: 333
What was the reason that your staccato controller was not working originally? I am having the same problem. Power LED comes on but no pulse. I tried scoping it and got nothing... scratching my head here...
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Oidium45 wrote ...
What was the reason that your staccato controller was not working originally? I am having the same problem. Power LED comes on but no pulse. I tried scoping it and got nothing... scratching my head here...
Not sure, but due to popular demand, i re-released this board. There are some instructions including theory and it also shows the waveforms you should be getting from the various chips. Instructions can be downloaded from the page here:
The PDF is not complete yet - just a preliminary version, so it doesn't show test and operation information.
Also, you're more than welcome to send me the Stacatto board back to me and i'll debug and troubleshoot it for you. No charge. Just pay the shipping charge.
Registered Member #2838
Joined: Fri Apr 30 2010, 07:55PM
Location: tehachapi, CA
Posts: 333
Oh, Sorry, I should have been more specific. It is not one of your boards. Just seems to be the same problem. Or similar. It is a similar design though. I was hoping for some quick ideas of where to look for issues. It was worth a try...
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
Vttc Staccato Questions
If 25.2vct is not enough and I doubt it is can I use a regular non center tapped transformer? 
If so what would be a good recommended voltage? Or a combination of 2 transformers? I would just order a 28vct but atm I'm really strapped for cash. Btw my staccato board is the EVR type. 
