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2010-04-05 by Malcolm Moore
Farnell and Newark are owned by the same company. I m a customer of Farnell and can obtain parts stocked by Newark in the US through Farnell, typically takes a
2010-04-04 by Lez
... or you need someone in the uk as middle man. -- Lez Save the planet - dont buy new - (ok food is an exception...) http://lez.briddon.googlepages.com/index2
2010-04-04 by designer_craig
I need to restrict shipping to within the USA. Thanks, Criag
2010-04-04 by Jeanette
use www.findchips.com to see if the parts you need are in stock anywhere else. Sometimes a line will be picked up by Mouser or Future Electronics without any
2010-04-04 by Chris Maness
I learned something new today. This is the second time I used CuCl2 to etch circuit boards. The first time it was a fresh batch of 15% HCl + 3% H202 in a 1:1
2010-04-04 by newbie2cnc
I hope it is OK to ask this on this forum if not please just delete and let me know. I have a CNC router that I am currently making circuit boards on but I
2010-04-04 by Piers Goodhew
I ve used Farnell here in Aust several times - shipping s free. Goods which are not in stock in Au show as more expensive, but there are no surprises on
2010-04-03 by designer_craig
I aquired some Genesis AQ3000 RC waterborne negative acting photoresist for roller coating PCBs (1800-2000 cps). My plan is to spin coat but have not had
2010-04-03 by Leon Heller
... Have you tried Newark? They are part of Farnell. I use Farnell a lot (from the UK), and they provide an excellent service. Leon -- Leon Heller G1HSM
2010-04-03 by Stefan Trethan
Farnell owns Newark, see if it is cheaper there. Farnell takes 20 eur from us to get parts from the US warehouses, flat-rate per order
2010-04-03 by John McCormick
I need to order some parts and the only place that has them in stock is Farnell in the UK. Otherwise I need to wait 4 months. Anyone in the USA ever order
2010-04-03 by Yngve
Yes, because according to http://www.p-m-services.co.uk/ferric_chloride.htm and http://artmondo.net/printworks/articles/ferric.htm, the CuCl builds up, while
2010-04-03 by Chris Maness
Well, it sort of worked. I think my contrast needs to be beefed up on my masque. I had them print the transparency at Office Max. Very good resolution, but
2010-04-03 by blue_eagle74
So would silcone be good? Brian
2010-04-03 by Chris Maness
It was positive film. Chris ... [Non-text portions of this message have been removed]
2010-04-03 by Russell Shaw
... With the film still on, the traces get thinner due to light-undercutting travelling through the film under the track.
2010-04-03 by DJ Delorie
Did you peel the protective film off after exposing? (yes, I still make this mistake occasionally myself) Note: most negative films want a 15 minute rest
2010-04-03 by Chris Maness
... I m an idiot. I did not realize that there is a sticker covering the sensitive side. However, after developing, my traces look a little on the thin side.
2010-04-03 by Russell Shaw
... Positive resist or negative?
2010-04-03 by Chris Maness
I made up a board on a CAD transfer program, and printed it off on a transparency. I exposed it to my homebrew UV LED array for 1 30 and transferred it to a
2010-04-02 by James
... IIRC you can mix it with sodium hydroxide and the nasty stuff will precipitate out, leaving you with saltwater that you can pour down the drain and solid
2010-04-02 by Chris Maness
... Ahhh, yes. That is CuCl that is insoluble in water. If you can separate that out and put into a separate container you can use it to etch after it has
2010-04-02 by Leon Heller
... It will be mostly cupric chloride, after some time. Leon -- Leon Heller G1HSM
2010-04-02 by Russell Shaw
... I don t know. It s just the brown stuff from the shop that eventually goes green after enough copper and airation.
2010-04-02 by Chris Maness
If you keep the Ferric Chloride in a container with a lid and add a bit of ... That works for FeCl3 too? I thought that was just for CuCl2 solution. Chris
2010-04-02 by Chris Maness
... The Cu++ ion is harmful. It should be disposed of in a local hazardous waste facility. Also, you can evaporate it and harvest the crystals to make it
2010-04-02 by Russell Shaw
... If you keep the Ferric Chloride in a container with a lid and add a bit of HCl every few months before a use, it will etch PCBs for years if you use air
2010-04-02 by zl1gbb
Hi I am sure someone can help me. What should I do with chemicals used in making pcb s? I have a winchester of used Ferric Chloride which I would like to
2010-04-01 by sailingto
Finally someone gives a clear answer to the op s question. The following is for the home DIY type boards that at most are double sided. I expect there are very
2010-04-01 by Eddie Stassen
Mine uses 96 UV LED s (the cheap ebay variety) on a 15mm grid. Exposure is about 45-60 seconds at 6 using negative resist film. There is no need for foil.
2010-03-31 by David Griffith
... Yes. Jump over to the other side just long enough to make your jump, then go back. Try to minimize their number and length (make one jump over many
2010-03-31 by DJ Delorie
No, technically if you have a *single* sided board, there s no copper on the other side to connect to, you d have to use a wire jumper. However - in PCB, (or
2010-03-31 by Paul Mateer
Correct ... Paul Mateer, AA9GG Elan Engineering Corp. www.elanengr.com NAQCC 3123, SKCC 4628, FPQRP 2003 [Non-text portions of this message have been removed]
2010-03-31 by Brian Pingree
The via hole is a plated hole through the board that connects to a trace on the other side hence the board becomes double sided (or indeed to any intermediate
2010-03-31 by DJ Delorie
A via is a hole in the PCB that lets you connect copper on different layers. While they re physically the same as the holes for component leads, PCB keeps
2010-03-31 by DJ Delorie
I use UV LEDs for my exposure box - 100 of them, on about a 1 grid, 20 mA, about 5 from the PCB. Takes about 5-6 minutes to expose.
2010-03-31 by Chris Maness
Like if I cannot find a way around a trace on a single sided board, I would cheat and use a via? Chris ... [Non-text portions of this message have been
2010-03-31 by Paul Mateer
it s a thru hole that connects traces from one layer to another. ... -- Paul Mateer, AA9GG Elan Engineering Corp. www.elanengr.com NAQCC 3123, SKCC 4628, FPQRP
2010-03-31 by Leon Heller
... Yes. Leon -- Leon Heller G1HSM
2010-03-31 by Chris Maness
I am using gEDA PCB and it has VIAS as one of the options. Is this referring to a hole that jumpers over a line on a PC board to the other side of a trace?
2010-03-31 by Chris Maness
I have a bag full of high output UV LED s. These things are very strong, I made the mistake of looking into one once. I was thinking about putting them in a
2010-03-31 by James
... Having dabbled with many of the packages out there, I ve found that most of them are very similar in concept, that is once you ve learned one, others are
2010-03-31 by christiansen_alex@hotmail.com
for the toppost people ..:) Think what Harvey says ,is what we forget in many things .. ... Free is not always the ... and for the bottom post people ..:) I
2010-03-31 by Kim Vellore
I have been using diptrace Love the fast autorouter in that, it is free for hobby use. Kim ... From: Harvey White To:
2010-03-31 by Paul Mateer
I still use OrCad 386+ for dos. can be found in yahoo group On Tue, Mar 30, 2010 at 9:07 AM, Weddig, Henning-Christof ... -- Paul Mateer, AA9GG Elan
2010-03-31 by Harvey White
... 1) it has features you want 2) you have time invested in it 3) you understand how it works 4) you find the free versions limited 5) the limitations on the
2010-03-30 by Rocko
I think you will like Kicad. Give it a try. [Non-text portions of this message have been removed]
2010-03-30 by James
... Why anyone would go with one that costs *anything* or is crippled when there are perfectly capable and completely *free* packages out there is beyond me
2010-03-30 by James
... I m almost done with my latest board which is my first attempt with the new release of KiCad and I m loving it. It has quirks like any other, but IMO it s
2010-03-30 by James
... Yeah that sounds like the problem. The stuff you want is straight peroxide diluted with water. The 3% drugstore stuff for washing cuts and scratches works,