RE: [Homebrew_PCBs] Re: UV Exposure units...
2011-06-15 by Iñigo
Hi: They are salvaged from energy saver lights from 1 dollar-shops, you only need to buy the appropriated wattage ones. J From: Homebrew_PCBs@yahoogroups.com
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Re: UV Exposure units...
2011-06-15 by Terry
Very cool. Do you have design info (schematics, pcb s) for what appears to be solid state ballasts shown in the pictures?
RE: [Homebrew_PCBs] UV Exposure units...
2011-06-15 by Iñigo
... And here’s mine (text is in Spanish, sorry):
Re: [Homebrew_PCBs] UV Exposure units...
2011-06-15 by DJ Delorie
... Here s mine. Works well, not as cheap, probably overkill, but if you know me you ll understand ;-) http://www.delorie.com/pcb/uvled/
Re: Inexpensive Heat Toner Transfer Paper
2011-06-15 by sailingto
That is good paper, but doesn t just fall off the board the way Pulsar paper does. I certainly feel the results are just as good as with Pulsar - and
help printer SAMSUNG ML-2010R laser
2011-06-15 by Roberto
Hello I am using a printer SAMSUNG ML-2010R laser, I do not know whether it is the most suitable for printing the drawings of the PCB as the Tartan 901 sheets
Re: [Homebrew_PCBs] Re: UV Exposure units...
2011-06-15 by Leon Heller
... I bought a couple of standard 12 fluorescent units, disassembled them, and substituted UV tubes for the standard ones. The box was made from MDF and
Re: UV Exposure units...
2011-06-15 by John
... Please tell me more details. I would like to give this method a test. I know there is a wealth of information with Google but imitating yours would likely
Re: UV Exposure units...
2011-06-15 by Zdenek
Hi, You can try: http://cgi.ebay.com/Pro-9W-UV-Gel-Nail-Art-Dryer-Polish-Curing-Lamp-Light-/150473861809?pt=LH_DefaultDomain_0&hash=item2308f0eab1 Pro 9W UV
Re: [Homebrew_PCBs] UV Exposure units...
2011-06-15 by Leon Heller
... Here is my homemade unit: http://www.leonheller.com/Photos/UV%20unit.jpg It works very well and was cheap to make. Leon -- Leon Heller G1HSM
RE: [Homebrew_PCBs] UV Exposure units...
2011-06-15 by Tony Smith
... Should work, that wavelength would be UVA. Nice little unit for small PCBs. The glue/gel they use is UV sensitive, it doesn t set until exposed to light,
RE: [Homebrew_PCBs] Hi
2011-06-15 by Rodney Jackson
Welcome aboard Steve, Remember; There are no stupid questions...... Only stupid answers. J. As an old bloke, I have asked my share of questions over the
Re: Blue Laser Drum Plotter
2011-06-15 by designer_craig
Stan, A lot of this is trial and error learning, I am not a machinist just a retired digital logic design engineer. Did take a couple of simple machining
Re: Blue Laser Drum Plotter
2011-06-14 by stan_katz
Hi Volkan, I can see I m out of my league. You, and Craig are designer/machinists. Many years ago I worked as an engineer for a military contractor that gave
Re: Inexpensive Heat Toner Transfer Paper
2011-06-14 by Fast Eddie
Give this a try: Staples Item# 633215 32# Color Laser Paper 300 sheets $11.49 + tax. It s the best value I ve found, separates easily and cleanly in cold
Re: [Homebrew_PCBs] Re: Blue Laser Drum Plotter
2011-06-14 by Volkan Sahin
Hi Stan, It is not easy to sell it as a kit because of the drum. The critical item is photocopier drum. I don t know whether it is possible to find cheap
Re: [Homebrew_PCBs] Looking for through hole vias
2011-06-14 by Paul Galarneau
Hi, Try the site below. Replace dot with a . www dot solder dot net/PCB/through_hole_repair_kit dot asp ... ________________________________
Re: [Homebrew_PCBs] Looking for through hole vias
2011-06-14 by Paul Galarneau
Hi, Take a look at this site: http://www.solder.net/PCB/through_hole_repair_kit.asp ... ________________________________ From: Leon Heller
Re: Blue Laser Drum Plotter
2011-06-14 by designer_craig
Stan, Volkan also built a direct UV laser writing system that immages the pattern directly on the Riston coated PCB. It raster scans the laser over the board
UV Exposure units...
2011-06-14 by Stephen
While wandering through EBay looking for PCB related stuff I came across this listing :-
Hi
2011-06-14 by Stephen
I am new to the group. I am a radio ham (G0XAR) and like to make my own equipment. Making PCBs is something i have never done before. So no doubt I ll be
Re: [Homebrew_PCBs] Looking for through hole vias
2011-06-14 by Leon Heller
... I d poke a thin piece of wire through the hole with the pin and make the missing connections with that. Leon -- Leon Heller G1HSM
Re: Blue Laser Drum Plotter
2011-06-14 by stan_katz
Marvelous! I ve been looking for a way to get consistently high quality negatives for fine pitch (surface mount) photoresist hobby work. I use Riston. To get
Looking for through hole vias
2011-06-14 by Jim Pruitt
I built a mixed smt and through hole kit on a commercial pc board recently and installed a header on the wrong side of the board. The board was thru hole
Re: [Homebrew_PCBs] Re: Inexpensive Heat Toner Transfer Paper
2011-06-13 by Harvey White
... I wish I were wrong..... ... I generally don t use the paper more than once. I do cut to size, use a laser label as glue, and the usual of highest toner
Re: Inexpensive Heat Toner Transfer Paper
2011-06-13 by sailingto
I stand corrected - you are correct, the cost of Pulsar is $1/sheet. See link: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=182-1003-ND
Re: Blue Laser Drum Plotter
2011-06-13 by psykhon@yahoo.com
Great job! looks amazing! How do you focuse the laser?
Re: [Homebrew_PCBs] Re: Inexpensive Heat Toner Transfer Paper
2011-06-12 by Harvey White
... Pulsar is 15.00 (roughly) per 15 sheets. 1.00 per sheet plus shipping. I use lots of it, and the company refuses to sell it in larger lots.... I d love to
Re: Inexpensive Heat Toner Transfer Paper
2011-06-12 by sailingto
Well, I ve not tried it, but at 50 cents/sht (shipping included) it s not any cheaper than the Pulsar paper when ordered from Digikey.com - and we KNOW the
Re: [Homebrew_PCBs] Re: Precision Drilling of PCBs
2011-06-12 by Charles Patton
One possible problem with using a front surface mirror is that due to the size of your camera, you may find the the distance from the lens to the board surface
Re: Precision Drilling of PCBs
2011-06-12 by schenckcharles
Hello Group I have received many great suggestions. Thanks very much! It seems like all of them would work. Although bottom drilling seems like the most
Blue Laser Drum Plotter
2011-06-12 by Volkan
Hi All, Recently, I worked on a homemade drum plotter to expose negative acting film. I added some photos under Photo Albums Drum_Plotter_V_Sahin and there
Re: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-11 by Leon Heller
... I liked the clamp mechanism that secured the board when the pedal was pressed. Leon -- Leon Heller G1HSM
Inexpensive Heat Toner Transfer Paper
2011-06-11 by Ivan Cousins
Has anyone tried this this inexpensive Heat Toner Transfer Paper? Heat Toner Transfer Paper 10 Sheets eBay 250583515106 or the Heat Toner Transfer Paper 50
RE: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-11 by Ronald Cody
Hi, I ve logged way more hours than I care to remember on a Exelon bottom drill and it was hands down the best way to drill accurate holes in PCB prototypes.
Re: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-10 by Henry Liu
If you have a motorized XY table (such as a CNC sherline mill), you could mount the camera with some cross hairs and have a drill button that will offset
Re: toner xfer issue...
2011-06-10 by James
... I ve had that with some inks too. Wiping it down with citrus cleaner takes the ink right off but leaves the toner. I forget what the stuff I have is called
Re: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-10 by Harvey White
... Drill from the bottom up. Use your CCD microscope to focus on the hole. Put red tape or the like on the screen to indicate the location of the hole as
RE: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-09 by Jeff Heiss
Do you have a picture of the setup? _____ From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] On Behalf Of Charles R. Patton Sent:
Re: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-09 by Charles R. Patton
I have an old small miniature precision drill press. I drilled a 3/8 hole on centerline with the drill bit and cut a pocket in the underside of the base
Re: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-09 by Lawrence Kincheloe
If I understand the problem correctly... An easier solution might be to map out the distortion using something like grid paper and use a clear stencil for
Re: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-09 by Leon Heller
... They had one of those at a French university where a friend of mine works. I tried it out when I was working there, and it works very well. They got rid of
Re: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-09 by Kim Vellore
You could drill a hole and put a cross hair mark on the screen and you are done. Kim
Re: [Homebrew_PCBs] Saving Press N Peel Blue Transfer Film
2011-06-09 by Kim Vellore
Chris, I have been doing the same too except I use a tape and stick only the feed end ~2mm inside of the blue transfer film with the other three ends free, it
Re: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-09 by Bruce Parham
... Hi Chris, You might try to find a metallic first surface mirror that you can drill a small hole into on a 45 degree angle and mount onto your drill stand
RE: [Homebrew_PCBs] Precision Drilling of PCBs
2011-06-09 by Boman33
A very long time ago commercial hand drilling was done with the drill mounted under a table and a microscope with cross hairs was used on the top. The drill
Re: [Homebrew_PCBs] Saving Press N Peel Blue Transfer Film
2011-06-09 by David Griffith
... I thought everyone did something like that. It s in the Pulsar paper documentation. -- David Griffith dgriffi@cs.csubak.edu A: Because it fouls the order
Saving Press N Peel Blue Transfer Film
2011-06-09 by schenckcharles
Hi For the last few years I have been using Press N Peel with a Dell 1700 laser printer in my home workshop. Results have been excellent, with little wastage
Precision Drilling of PCBs
2011-06-09 by schenckcharles
Hello Group I have a quick question about precision drilling of home made PCBs. Because of poor eyesight, I use a CCD microscope next to my Dremel Model 300
Re: test
2011-06-08 by Mike Bushroe
I M feeling a bit testy today! I have been working on an underwater ROV, actually 2 Mini0-ROVs, and I can t get all 12 software generated PWM channels to come