Re: [Homebrew_PCBs] Finally got the green!
2008-03-17 by Stefan Trethan
yes sure the ground will filter it just fine, we are talking tiny quantities for rinsing. I would have expected it to read surface water not ground water
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Re: [Homebrew_PCBs] Finally got the green!
2008-03-16 by DJ Delorie
... It s a 3% solution. ... It drains into the perimeter drain for the basement, hence the sign. The pipe eventually ends up draining out in the woods downhill
Re: [Homebrew_PCBs] Finally got the green!
2008-03-16 by Stefan Trethan
I don t get anything reliable smaller than 6.6mil either. I too believe it might be possible, but i don t need it and i like the reliability i have with wider
Re: [Homebrew_PCBs] Re: Finally got the green!
2008-03-16 by DJ Delorie
... Thanks. I think the printer can do better, though. It s very sensitive to the paper you print on. For example, printing on a transparency gave very
Re: Finally got the green!
2008-03-16 by logicresearch
Thats some pretty fine etching there. Daryl. ... hydrometer, ... sink. ... printers ... cartridges ... old ... 2550. ... before. It ... My ... The ...
Finally got the green!
2008-03-16 by DJ Delorie
I finally collected enough bits and pieces to do CuCl etching (although it s still HCl etching). I ve been collecting stuff for quite some time now, HCl,
Re: T-Shirt transfer paper
2008-03-16 by Wayne
Thanks for the replies. Early this morning (Australian time) I realised that the surface would be entirely covered with the paper .
Re: T-Shirt transfer paper
2008-03-15 by Ray
... Wayne, I know of at least 3 types of T-Shirt transfer paper: The first is a special paper sold by screen supply shops that is intended to be used as a
Re: T-Shirt transfer paper
2008-03-15 by Leon Heller
... It just makes a sticky mess, I tried it once. Leon
Re: [Homebrew_PCBs] T-Shirt transfer paper
2008-03-15 by Derryck Croker
... Print your inkjet master and take it to a photocopier? -- Cheers Derryck
Re: T-Shirt transfer paper
2008-03-15 by Steve
1. It is meant for inkjet and may melt in your laser printer. 2. You ll end up with a board 100% covered in soft polymer, regardless of where you printed. I
T-Shirt transfer paper
2008-03-15 by Wayne
I have been reading about the toner transfer method, however I do not have access to a laser printer. From what I understand, the key element if the plastic
WinQcad
2008-03-14 by logicresearch
Well, previously I had asked who was using Altium and the topic went on for some time with some interesting feedback (one guy even got kicked off). I have
need to buy pcb??
2008-03-14 by jamalzaghal
Hello Friends, I need to bye blank PCBs here in Israel. I need something like 10 Sq.mtrs .8mm 1/2 OZ SS and DS. Any help appreciated. Thanks.
Re: [Homebrew_PCBs] Direct Resist on CD printer
2008-03-12 by Adam Seychell
... There is a physical limit on how precise the location of inkjet drop can be placed on the print media. No matter how you configure the driver the ink will
Re: to add to this site
2008-03-12 by logicresearch
I too am with electronics_101 (as well as a couple of others) and between this and the other groups you can learn a lot (as well as teach a lot).
Re: to add to this site
2008-03-12 by Brian
You got it right. I have joined electronics_101 and there is alot of good information there. Well, off to E_101. Brian ... wonderful
Re: to add to this site
2008-03-12 by Steve
Sorry, the wording sounded like you were saying to go to electronic_prototypes and only later come back here. Not that I thought anyone would leave this list
Re: to add to this site
2008-03-11 by Brian
I did some research and found out that Steve is also the owner of electronics_101. This is what I was looking for in my site. Therefore I have left my site.
Re: to add to this site
2008-03-11 by Brian
No one ever asked anybody to leave this group. I have read wonderful information on making pcb s here and would not like to leave so I would not ask anyone
Re: LaserPCBs for prototyping circuit boards
2008-03-11 by drpain1313
Isn t that what we all live for, a challenge? (at least those that read this group I m sure) ... and the ... relevant to ... low-volume ... 3/29/2008.
Re: [Homebrew_PCBs] Re: LaserPCBs for prototyping circuit boards
2008-03-10 by Mark Lerman
Ah, a challenge
Re: LaserPCBs for prototyping circuit boards
2008-03-10 by drpain1313
Trade secret :)
Re: [Homebrew_PCBs] Re: LaserPCBs for prototyping circuit boards
2008-03-10 by DJ Delorie
... I wonder if gelatin would work? You need something that s: 1. heat tolerant 2. insulator 3. water soluble
Re: [Homebrew_PCBs] Re: Direct Resist on CD printer
2008-03-10 by DJ Delorie
Well, the printer was free (with the purchase of a camera, which I needed anyway) so I didn t get to choose one with Linux support. Maybe I ll reverse
Re: [Homebrew_PCBs] Direct Resist on CD printer
2008-03-10 by DJ Delorie
... They do. However, *accuracy* is as important as resolution, so if you get a high-res printer that can t position an ink dot within 10 mil, it s not going
Re: [Homebrew_PCBs] Re: LaserPCBs for prototyping circuit boards
2008-03-10 by Mark Lerman
Now what might this gel be?? Mark
Re: LaserPCBs for prototyping circuit boards
2008-03-10 by drpain1313
The kits come with everything you need: the copper sheet, the FR4 board, and the gel.
Re: LaserPCBs for prototyping circuit boards
2008-03-10 by Steve
Exactly on topic! I want to make sure I understand. I need to order the sheets and the gel? And the blank FR4 comes with the copper sheets? Steve Greenfield
Re: Direct Resist on CD printer
2008-03-10 by Steve
There is where what seems right may not be. Inkjet printers specifically randomize placement (it is called dithering ) of the ink dots a bit to hide the fact
Re: [Homebrew_PCBs] Direct Resist on CD printer
2008-03-10 by Mark Lerman
I was thinking of using a cd with a square cutout for the pcb. I thought that inkjets, especially ones for photos had a much higher resolution than laser
Re: [Homebrew_PCBs] Direct Resist on CD printer
2008-03-10 by DJ Delorie
I have a stylus photo R280 I ve been experimenting with, but even at ultimate photo quality the dots don t line up as well as with my laser printer. I
LaserPCBs for prototyping circuit boards
2008-03-10 by drpain1313
Forgive the borderline spam, but I believe this is quite relevant to this group. LaserPCBs are a unique method of producing prototype and low-volume printed
[Homebrew_PCBs] Direct Resist on CD printer
2008-03-10 by Mark Lerman
I had too many problems with direct resist printing on the Epson PM200 - the paper feed motor covered part of the (new) rear entrance for the pcb, and the
Re: to add to this site
2008-03-10 by Steve
So... people should leave this group and join yours? I don t see why that is necessary. This group is for all experience levels. I see this as splitting the
Re: Epson Cartridge Question
2008-03-10 by Steve
It is important to use the correct terms, I m not trying to be retentive. That is an inkjet and so uses ink, not toner. I don t know if that s the best printer
Re: [Homebrew_PCBs] to add to this site
2008-03-10 by William Nelson
I would not bother to sign up for this group. There is not very much information and most of the messages are spam. Appears to be a come on to sign up for
to add to this site
2008-03-10 by Brian
Prior to advancing to this site you should check out http://tech.groups.yahoo.com/group/electronic_prototypes/ It may help you get to the point to advance to
Re: [Homebrew_PCBs] Epson Cartridge Question
2008-03-09 by mlerman@ix.netcom.com
It s been done before - see the links for this group. I think it will provide the best resolution short of photographic techniques. From what I now have found
Re: [Homebrew_PCBs] Epson Cartridge Question
2008-03-09 by Derryck Croker
... Very hard to do with an inkjet printer, I d imagine. -- Cheers Derryck
Re: [Homebrew_PCBs] Epson Cartridge Question
2008-03-08 by Mark Lerman
Whoops - there are 7 contact.
Epson Cartridge Question
2008-03-08 by Mark Lerman
I m modifying an Epson Picturemate 200 for direct toner transfer, and I have a couple of questions about the ink cartridge that I hope someone can answer. The
Re: [Homebrew_PCBs] Exposure with vacuum frame
2008-03-07 by Stefan Trethan
Vacuum allows you to expose both sides at once, foam does not. ST
Exposure with vacuum frame
2008-03-07 by Adam Seychell
Many of the of professional lab/prototyping PCB exposure units seem to be fitted with a vacuum assisted frame. I m wondering if vacuum has much advantage
off topic Re: Help needed
2008-03-06 by Steve
This is where you get help designing or making the PCB. Elecronics_101 is where you get help designing the circuit, which is what you need first. No big deal.
Re: [Homebrew_PCBs] Re: UV LED Test
2008-03-06 by Adam Seychell
... That 2 was just minimum distance from what I observed to look fairly uniform. I had a quick look at you model and it seems valid to me. I m a bit of a
Re: UV LED Test
2008-03-06 by pork_u_pine2000
... .... Very interesting! I have had SciLab installed and wanted to do something useful with it for a while, so I just opened it up and dropped in the code
off topic Re: Help needed
2008-03-06 by Jawa Lunk
Sorry, thought this was where people designed and built boards like this. ... worry ... [Non-text portions of this message have been removed]
off topic Re: Help needed
2008-03-06 by Steve
This question is suited for Electronics_101. http://groups.yahoo.com/group/Electronics_101 Thank you, Steve Greenfield owner Homebrew_PCBs and Electronics_101
Re: UV LED Test
2008-03-06 by javaguy11111
I did up a little program in scilab to add up contributions of a 1D array of LEDs based on the intensity diagram from the BestHongKong LEDs. You will have to