Re: [Homebrew_PCBs] Yellow CFL bulb
2013-07-23 by David
The phosphor coating is usually distributed unevenly near the ends of the tube where the metal caps are allowing the UV out and direct viewing of the
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Re: [Homebrew_PCBs] Yellow CFL bulb
2013-07-23 by joe lobocki
Thats odd... I just went to my walmart a while ago and got 40w cfl bug lights, and they had a few brands of incandescent bulbs, what state are you in that they
Re: [Homebrew_PCBs] Yellow CFL bulb
2013-07-23 by Shannon Haworth
I use one of these: http://www.rei.com/product/709063/petzl-tactikka-plus-led-headlamp Works great ... [Non-text portions of this message have been removed]
Re: Yellow CFL bulb
2013-07-23 by Kirk
resend - evidently didn t get through LED lightsource is monochromatic so the ends of tubes leaking light is a moot point. To me it is the obvious choice. Kirk
Re: Yellow CFL bulb
2013-07-23 by cunningfellow
... Or use a large LED setup. Non white LEDs have no UV out.
Re: [Homebrew_PCBs] Yellow CFL bulb
2013-07-23 by Jim
I just remembered seeing colored CFLs at Home Depot. I think yellow was in their batch. Not cheap, though. 73 Jim N6OTQ ... [Non-text portions of this
Re: [Homebrew_PCBs] Yellow CFL bulb
2013-07-23 by Jim Hancock
Probably not yellow glass but yellow phosphor coating. All fluorescent lamps work by using UV from a mercury vapor light source to excite a phosphor coating on
Re: [Homebrew_PCBs] Yellow CFL bulb
2013-07-22 by kabowers@...
... IIRC yellow tubes were once used in offset print darkrooms. Might be interesting to check with printing supply houses. Years ago we used 15 watt standard
Re: [Homebrew_PCBs] Yellow CFL bulb
2013-07-22 by Jim
Some random thoughts .... How about an appropriately colored gel filter from a camera store or photographic supplier? Kodak used to make and sell this, but
Re: [Homebrew_PCBs] Yellow CFL bulb
2013-07-22 by Kirk McLoren
LED light source ________________________________ From: Ray To: Homebrew_PCBs@yahoogroups.com Sent: Monday, July 22, 2013 2:27 PM
Yellow CFL bulb
2013-07-22 by Ray
My 60 watt incandescent yellow bug light finally burned out after years of use. I checked several stores (Walmart, Home Depot, Lowes) for a replacement but
Direct pen plotting need help please
2013-07-22 by HAN
Hello all, I Have a roland dxy 1200 plotter and i using kicad pcb program, the print out is single line and circles only (not the track size and pad).how to
Re: [Homebrew_PCBs] Re: Sodium PerCarbonate
2013-07-21 by Kerry Koppert
... OK it worked fine, you need to be a little patient adding acid as the carbonate releases CO2 initially. Also the toner was getting soft but this may be
Re: [Homebrew_PCBs] Re: Sodium PerCarbonate
2013-07-21 by Kerry Koppert
... Not another language but another brand (tim-tam = chocolate coated biscuit). ... [Non-text portions of this message have been removed]
Re: [Homebrew_PCBs] Machinable SMT stencil material?
2013-07-20 by brane2
... And how about etching them instead of machining BTW ?
Re: [Homebrew_PCBs] Re: Machinable SMT stencil material?
2013-07-20 by Mitch Davis
... http://lowpowerlab.com/blog/2013/02/11/diy-smd-metal-stencils-the-definitive-tutorial/ Mitch.
Re: Machinable SMT stencil material?
2013-07-20 by dubob4432
I had seen this a couple years ago and tried it myself and got good results, especially considering how surface tension and solder paste pulls parts into
Re: [Homebrew_PCBs] Machinable SMT stencil material?
2013-07-20 by <n0tt1@...>
I always thought those stencils were etched....seems MUCH easier and probably more accurate. Just my 2-cents worth :D) Charlie On Sat, 20 Jul 2013 23:45:49
Re: [Homebrew_PCBs] Machinable SMT stencil material?
2013-07-20 by brane2
How about using thin aluminuim plates for printing machines ? They come cheap. Bonus is that they already come presensitised with photosensitive layer...
Re: [Homebrew_PCBs] Machinable SMT stencil material?
2013-07-20 by Mark Lerman
I have made stencils using thin (10 mil) Garolite (FR4) that I get from McMaster-Carr. Mark
Machinable SMT stencil material?
2013-07-20 by ohmware
My SMT adventures continue... I am making some promising progress, but I have discovered that the bronze sheets I am using to make stencils are destroying my
Re: [Homebrew_PCBs] Re: Sodium PerCarbonate
2013-07-20 by lists
In article , ... Hmmm, another language to learn! -- *Plain Text* email -- it s an accessibility issue () no proprietary attachments;
Re: Sodium PerCarbonate
2013-07-20 by cunningfellow
... Beauty Shops in OZ (price attack etc) only sell pre-mixed hair bleach creams, not the raw peroxide. I assume NZ is similar with the hydroponic shops to OZ
Re: [Homebrew_PCBs] Re: Sodium PerCarbonate
2013-07-20 by Kerry Koppert
... It seems to have gone out of fashion in New Zealand. 50 years ago you could buy hydrogen peroxide in a chemist shop (drugstore) or a grocery store. Now
Re: [Homebrew_PCBs] Re: Sodium PerCarbonate
2013-07-19 by Jim
Have you tried a beauty supply store? At least here in the states, 40 wt (10%) H2O2 is widely available and relatively inexpensive, as a hair coloring
Re: Driving EPSON printeahd drectly- volkan sahin's email ?
2013-07-19 by AlienRelics
I created a group specifically to talk about this, so it won t get lost in the rather prodigious shuffle here.
Re: [Homebrew_PCBs] Re: Driving EPSON printeahd drectly- volkan sahin's email ?
2013-07-19 by brane2
@Volkan Sahin: Thanks for your response. If by some IP problems you mean problems with Verilog/VHDL source for FPGA, I don t care too much about that. I hope
Re: [Homebrew_PCBs] Re: Driving EPSON printeahd drectly- volkan sahin's email ?
2013-07-19 by Volkan Sahin
Hi All, Wow what is going on.. I want to clarify a few things, -I have no connection with Massmind but I think James did a great job and put everything in one
Re: [Homebrew_PCBs] Re: Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-19 by Gustavo Villada
James, I just discover your site from this thread and is great. now into business, I don t know if you are looking for a just webhost or a dedicated server.
Re: Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-19 by James Newton
Hey Guys. I understand that dear Phil has already flushed himself, so I ll address this to anyone in the group who might be wondering. 1. The ads on the site
Re: [Homebrew_PCBs] Sodium PerCarbonate
2013-07-19 by Mr & Mrs Alma & Colin Lane
If you want Sodium Percarbonate here in Oz it is available in most supermarkets as Vanish or Napisan. It comes in 1 & 2 Kg plastic containers. Colin Lane
Re: Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-19 by AlienRelics
The irony of that post is overwhelming. Sarcastic comments about altruism, coming on the heals of angry blustering about how all of someone else s work should
Re: Sodium PerCarbonate
2013-07-19 by cunningfellow
... Try the hydroponic gardening shops. The guys that grow smoking tomatoes use 40w/v H2O2. Thats where I get mine from. Then Bunnies have the HCl The other
Re: Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-19 by phil_mattison
OMG!!! I almost forgot- we re all a bunch of altruists here in the ether. Grovel, grovel, etc. Yahoo just made it more difficult again to log in. Being as this
Re: Sodium PerCarbonate
2013-07-19 by jiburat
Good idea, I see no reason why it wouldn t work. I m going to try it myself, I m from AUS and H2O2 is just too expensive here ... difficult ... buy ...
RE: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-19 by brane2
I don t think it would be so hard to do it. Basic principle should be discernible from available data.Remaining holes can be filled with data acquired during
RE: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-19 by Tony Smith
Oh, for fucks sake. Massmind.org is run by James Newton, who s also member of this list. He can chime in to tell you exactly how much money he makes from that
Re: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by Phil@Yahoo
Well, you re sort of pissing right now. My comments are not a reflection on Volkan, but probably on Massmind. Massmind is not in the technology business as the
Re: Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by AlienRelics
Volkan posted some info in the files area here: http://tech.groups.yahoo.com/group/Homebrew_PCBs/files/Epson_inkjet_Volkan/ And in the Inkjet PCB Construction
RE: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by Tony Smith
... Christ, who pissed in your cornflakes this morning? Massmind isn t Volkan s website; there s no links back to his website or resume or Facebook page; and
Re: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by Phil@Yahoo
I didn t say he didn t do it. I said he s not sharing it in that article, which essentially says only that he did it, not really how. In other words, if he is
RE: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by Boman33
I second Mark Lerman s comment! There was a lot of activity and interaction with Volkan at that time. I see almost 400 of his emails. His email address used
Re: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by Mark Lerman
I believe you re mistaken about Volkan - he is not smoke and mirrors and I m pretty certain he did exactly what he said he did. Unfortunately I do not know his
Re: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by brane2
Well then, it s time to finally open a printer or two and hang a scope on the printhead ;o)
Re: [Homebrew_PCBs] Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by Phil@Yahoo
I ve seen a lot of technical articles like that one. At first blush it looks pretty exciting, but ends up very short on specifics. And search though you may,
Driving EPSON printeahd drectly- volkan sahib's email ?
2013-07-18 by brane212
Hi to all. I thought about hacking the EPSON printhead protocol for long time, but never actually got the time to try it. Just yesterday I was chekcing around
Re: Sodium PerCarbonate
2013-07-17 by fred27murphy
... Well, I can think of a good someone to try it! Why don t you give it a go and get back to us with the results.
Re: [Homebrew_PCBs] Sodium PerCarbonate
2013-07-17 by Kerry Koppert
... Red face, I had my trademe filter set for Taranaki. Still wish someone had tried percarbonate 2Na_2 CO_3 .3H_2 O_2 + 4HCl ? 4NaCl + 2H2CO_3 + 3H_2 O_2 ...
Re: [Homebrew_PCBs] Sodium PerCarbonate
2013-07-17 by James
Kerry, since you are in NZ - 1 Litre, 35%, $25, and $5 Courier http://www.trademe.co.nz/motors/car-parts-accessories/oil-additives/auction-616226654.htm $30 NZ
Re: [Homebrew_PCBs] Sodium PerCarbonate
2013-07-17 by Kerry Koppert
... Should is the operative word. In New Zealand make that $9.00 for 200 ml (about 1/3 of a pint). ... 35%, 3% still costs the same to transport, I ve got