Re: [Homebrew_PCBs] v-scoring
2009-04-01 by DJ Delorie
... I ve got a full woodshop already, including an 8 long bed jointer, so I m already prepared for those types of issues. I was thinking of this model:
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Re: [Homebrew_PCBs] v-scoring
2009-04-01 by Harvey White
On Wed, 1 Apr 2009 15:30:42 -0400, you wrote: If you do get a metal shear, wait until the big one is on sale, if that s what you want. Overpriced otherwise.
v-scoring
2009-04-01 by DJ Delorie
Today s project was to see if I could cut v-scoring with a table saw. I found an old steel plywood blade (no carbide to break off, lots of teeth) and reground
Re: [Homebrew_PCBs] Re: Inexpensive single source supplier??
2009-04-01 by Jack Coats
Yep. ... but the ideas are still out there. I still think there is a market for a Mr.Fusion! (ref: http://www.imdb.com/title/tt0088763/ ) [Non-text portions
Re: [Homebrew_PCBs] Re: Inexpensive single source supplier??
2009-04-01 by DJ Delorie
What I do is keep a list of what I want from each supplier. In my case, it s a spreadsheet that adds up the costs and adds shipping. When it gets to be enough
Re: Inexpensive single source supplier??
2009-04-01 by awakephd
Thanks, DJ -- I had noticed that, and should have mentioned it as one of the variables in the pricing equation. The real sticking point for me in going with
Re: Inexpensive single source supplier??
2009-04-01 by awakephd
Rats. Another great idea ruined by the inconvenient fact that someone else got there first. Sigh. In addition to the world arranging itself to meet my needs, I
Re: [Homebrew_PCBs] Re: Led uv exposure box
2009-03-31 by Mr Smiley
I found that you need 400-430nm for exposure of photosensitive pcb s, which is UV-a
Re: Inexpensive single source supplier??
2009-03-31 by javaguy11111
... I have found findchips.com to be pretty good for this kind of thing.
Re: Led uv exposure box
2009-03-31 by lineunderwaterservices
... Yeah, I realized that after I sent the post. I had a brain fart. I don t know what I was thinking!!! Disregard post.
Re: [Homebrew_PCBs] Re: Led uv exposure box
2009-03-31 by leon Heller
... From: lineunderwaterservices To: Sent: Tuesday, March 31, 2009 4:02 AM Subject: [Homebrew_PCBs]
Re: Led uv exposure box
2009-03-31 by lineunderwaterservices
... Hello All, I don t know if these will work but I have 150 IR LEDs with these specs. 5mm IR Infrared LED 850nm Emitted Color : Infrared Size: 5mm Lens Color
Re: [Homebrew_PCBs] Re: Led uv exposure box
2009-03-31 by DJ Delorie
... Best Hong Kong on eBay, as suggested by others here in this group. That was a while ago, though. ... They re not that rigid, a little bit of bending
Re: [Homebrew_PCBs] Re: Inexpensive single source supplier??
2009-03-31 by Jack Coats
Looks like you have an opertunity here. Develop a shopping site that can access the available inventory of each of the vendors, and give a least overall
Re: [Homebrew_PCBs] Re: Led uv exposure box
2009-03-31 by William Alford
... hi, where do you obtain these LEDs. and how did you align them? looks like they are rigidly fixed in the plywood. William Alford GI Motility Medical
Re: [Homebrew_PCBs] Re: Inexpensive single source supplier??
2009-03-31 by DJ Delorie
... Note that digikey doesn t charge handling. If you use USmail, it s just a few dollars for shipping. I use digikey as my first choice supplier (with
Re: Inexpensive single source supplier??
2009-03-30 by awakephd
Thanks -- a couple of these were new to me. Unfortunately, I m still striking out on trying to find everything on my list -- Futurlec and Sparkfun are both
Re: Inexpensive single source supplier??
2009-03-30 by Ben
... Mouser and Allied Electronics. www.mouser.com www.alliedelec.com
Re: Inexpensive single source supplier??
2009-03-30 by awakephd
Goldmine has great prices on the copper board, but does not carry the R8C or FT232R. Neither All Electronics nor Alltronics carry these either. Hence my
Re: Inexpensive single source supplier??
2009-03-30 by warrenbrayshaw
... Check these to see if they suit your needs. http://www.bgmicro.com http://www.futurlec.com http://www.sparkfun.com http://www.jameco.com
Re: [Homebrew_PCBs] Re: Led uv exposure box
2009-03-30 by DJ Delorie
... Yes, it just holds the mask tight against the board. While the board and glass are flat they re not the same flat, so before parts of the mask were up a
Re: Led uv exposure box
2009-03-30 by trevwhite74
... Why do you need a vacuum system? Is this to make sure the mask layer is tightly against the board? ... Those are really very good. I remember using your
Re: [Homebrew_PCBs] Re: Led uv exposure box
2009-03-30 by DJ Delorie
... No, there are others here who have done all I have done and more. ... I ve used it quite a bit. It seems to work well *if* you have a vacuum system. Here
Re: Inexpensive single source supplier??
2009-03-30 by rmustakos
goldmine-elec.com www.allelectronics.com http://alltronics.com/ no affiliation with any, other than satisfied customer.
Re: Led uv exposure box
2009-03-30 by trevwhite74
Hi DJ Delorie. You really are the main, you have done everything. lol So have you used the UV box much? Does it give good results? Looking at the picture, it
Re: [Homebrew_PCBs] Led uv exposure box
2009-03-30 by DJ Delorie
Here s mine: http://www.delorie.com/pcb/uvled/ I went for the grid of LEDs solution - I did NOT want to spread out the UV as they were already pretty well
Led uv exposure box
2009-03-30 by trevwhite74
Hi all. I have read a few things now about LED UV exposure units. I really like the idea and want to make one. I want to spread the light out nicely though
Re: [Homebrew_PCBs] Re: laminator, vacuum, 5-mil spirals - report
2009-03-30 by DJ Delorie
... That s exactly what I do :-) ... I don t know PIC programming, but does it use asynchronous or synchronous serial? Does it have any special timing
Inexpensive single source supplier??
2009-03-30 by awakephd
I ve been looking around for a single source from which I can order a wide variety of parts. For example, at the moment I d like to get the following: Blank
Re: laminator, vacuum, 5-mil spirals - report
2009-03-30 by awakephd
... From the quick read I ve done of both data sheets, it appears that the CP2103 only has Windows drivers for the direct control. I am running mostly under
Re: [Homebrew_PCBs] Re: laminator, vacuum, 5-mil spirals - report
2009-03-29 by DJ Delorie
... There have been complaints in the past about the quality of FTDI s drivers, but I suspect they ve been fixed by now, and Linux uses its own drivers for
Re: [Homebrew_PCBs] Re: laminator, vacuum, 5-mil spirals - report
2009-03-29 by Stefan Trethan
I ve taken to purchasing ready made USB/RS232 adapters and using them for my purposes. They are so cheap you can hardly mount any IC on a PCB for the money.
Re: [Homebrew_PCBs] Re: laminator, vacuum, 5-mil spirals - report
2009-03-29 by Dave Hylands
Hi Andy, ... They re both pretty similar. Personally, I prefer the FT232R because they seem to be better supported under linux, especially for non x86
Re: laminator, vacuum, 5-mil spirals - report
2009-03-29 by awakephd
Very cool, and very helpful. As I was digging around for suppliers for the FT232R chip, I also came across the Silicon Lab CP2103 chip. One source described
Re: Which laminators can handle 1.6mm board
2009-03-28 by trevwhite74
Thanks for the response. I did a quick search through the messages but did not find much. I found a GBC H535 on ebay going relatively cheap and was trying to
Re: Which laminators can handle 1.6mm board
2009-03-28 by jj_winkel
As stated in another post, I just acquired a GBC H425 and specs say up to 2 x 250 µm but that s for the pouch thickness only the overall total thickness is
Which laminators can handle 1.6mm board
2009-03-28 by trevwhite74
Hi all. I have been nosing around at all the laminators that are available. I have seen one that says it will handle 500um, the rest seem to be
Re: [Homebrew_PCBs] Re: laminator, vacuum, 5-mil spirals - report
2009-03-28 by DJ Delorie
... Go to http://people.redhat.com/~dj/m32c/ Click on Easy R8C/M16C/M32C Flash Programming and read :-) The link under it is a sample flash downloader
Re: laminator, vacuum, 5-mil spirals - report
2009-03-28 by awakephd
... I d like to hear more about this one -- are you saying that you don t need anything other than a serial output -- no JDM-type board or anything? I assume
GBC H425 laminator question
2009-03-27 by jj_winkel
Hi everybody I have acquired a 2nd hand GBC H425 laminator, it takes 2 mm thick docs easily even so max thickness specified was 1 mm only. It has a 0 (cold)
Re: [Homebrew_PCBs] laminator, vacuum, 5-mil spirals - report
2009-03-27 by DJ Delorie
Today I tried 4, 3, 2, and 1 - I didn t expect them to work as I knew the film wasn t laminated well enough, so I merged the four into one print (one quadrant
Re: [Homebrew_PCBs] Laminators?
2009-03-27 by DJ Delorie
... Just to be pedantic: mine is the GBC-Creative, not the GBC-9. Not sure what the difference is.
Re: [Homebrew_PCBs] Re: DJ Delorie's temperature controller
2009-03-27 by DJ Delorie
... My usual response to these types of statements is my way is more fun :-) ... Since I write embedded development tools, yeah, the software side of this
Re: [Homebrew_PCBs] Re: DJ Delorie's temperature controller
2009-03-27 by Stefan Trethan
Yes, i have several meters with thermocouple probes, so that was no problem. For $50 you can probably get one of the chinese digital controllers on ebay and a
Re: [Homebrew_PCBs] Re: laminator, vacuum, 5-mil spirals - report
2009-03-27 by DJ Delorie
... A couple of (to me) advantages: 1. Most run on anywhere from 2.7v to 5v (i.e. each chip allows that range so you can plug them into pretty much any
Re: laminator, vacuum, 5-mil spirals - report
2009-03-27 by awakephd
Many thanks. I used to do a fair bit with electronics, many years ago. I m slowly getting back into it, but things have changed a bit since my 6502 days. :) I
Re: [Homebrew_PCBs] Re: DJ Delorie's temperature controller
2009-03-27 by DJ Delorie
... I thought about doing something like that. The problem was, I needed a specific temperature (the film says 240F), and had no way of measuring the actual
Re: [Homebrew_PCBs] Re: DJ Delorie's temperature controller
2009-03-27 by Stefan Trethan
If you are interested in the more economical version, this is it: Just a transistor, and a few resistors, and not a line of
Re: [Homebrew_PCBs] Re: laminator, vacuum, 5-mil spirals - report
2009-03-27 by DJ Delorie
I added more design files and a board image to my web server: http://www.delorie.com/electronics/laminator/ It s not much, but then again, it didn t take much
Re: [Homebrew_PCBs] Re: laminator, vacuum, 5-mil spirals - report
2009-03-27 by DJ Delorie
... Sure. ... Yes. Digikey part number 102-1802-ND. Ah - typo, it s a VSK, not a VSX. Fixed. ... Yes, but not quite. The capacitor and resistor drop the