[sdiy] CV-vactrol circuit

David G Dixon dixon at mail.ubc.ca
Sat Jul 4 03:26:12 CEST 2015

Based on the scenario you describe below, I would suggest that nobody cares
what you do with your extra boards or whatever.  You are not going to be in
Blue Lantern territory over this.  Stop worrying about it.

> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl 
> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of 
> niroke at tampabay.rr.com
> Sent: Friday, July 03, 2015 1:28 PM
> To: Neil Johnson
> Cc: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] CV-vactrol circuit
> Someone said:
> Synthrotek has a kit that does that: 
> http://store.synthrotek.com/Vac_Pak_Kit
> Yes, but I want to use a PCB mount socket and already have a 
> 5V power source, and I cannot afford $18 per unit when I need 
> 14 of them.  I hope to do anything I can myself to save money. 
> I didn't want to mention them by name as some already got the 
> impression that there is a conflict.  That is not the case, I 
> just haven't heard back yet, and that may be because of the 
> July 4th weekend. That is actually the very schematic I used. 
> Please, don't anyone think that Synthrotek had claimed 
> ownership, told me to cease, called a lawyer, called me 
> names, or anything else.  It may turn out that he doesn't 
> care if I use this and give the surplus boards away.  I'm 
> just looking for a back-up plan in case I've done something 
> that's disrespectful.  
> I was really trying to avoid the whole Blue Lantern scenario, 
> and now I fear I've stepped in it with both feet as there is 
> some speculation about the designer's position and he isn't 
> here to speak for himself.  No, this isn't for a commercial 
> product, but giving away my extra boards could make it 
> unnecessary for others to purchase his kit.  Steve, if you 
> see this, please don't think I was bad-mouthing you or trying 
> to get people to choose sides.  I'm merely looking for an 
> alternative circuit.  
> Nick 
> : 
> >  
> ---- Neil Johnson <neil.johnson71 at gmail.com> wrote: 
> > niroke wrote:
> > > To be more clear...
> > 
> > Maybe posting a link to the schematic you're talking about 
> might help 
> > the conversation?
> > 
> > And seriously, unless you're developing a commercial 
> product you don't 
> > need to be concerned about infringing on anyone's IP.
> > 
> > Neil
> > --
> > http://www.njohnson.co.uk
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