Re: [Homebrew_PCBs] Ultrasonic etching tank?
2006-11-17 by Leon Heller
... From: Christopher Hart To: Sent: Friday, November 17, 2006 2:23 PM Subject: Re: [Homebrew_PCBs]
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Re: Any info about this technique?
2006-11-17 by Steve
Everything old is new again.... ; ) Check out this thread: http://tech.groups.yahoo.com/group/Homebrew_PCBs/message/259 Metal layout fluid and specifically
Direct printing conductors?
2006-11-17 by Scott Monsma
I hope I didn t miss this in the archives, but has anyone considered or tried direct printing of the PCB using a conductive ink? There seem to be several
Re: [Homebrew_PCBs] Ultrasonic etching tank?
2006-11-17 by Stefan Trethan
On Fri, 17 Nov 2006 15:23:09 +0100, Christopher Hart ... Can you rule out it is only the heating which speeds it up? ST
Re: [Homebrew_PCBs] Ultrasonic etching tank?
2006-11-17 by Christopher Hart
Sometimes I will use one on small boards. I place the board and etchant in a small glass/ceramic container, put some water in the cleaner, then set the
Re: [Homebrew_PCBs] limited success
2006-11-17 by Herbert E. Plett
... 2 out of 20??? there is something very foul in your TT.... 19/20 may be, but 2/20?
Re: [Homebrew_PCBs] limited success
2006-11-16 by Lez
... At first I was using the 8*6 sheets, trying different papers etc, when I thought I had it, I taped 3 8*6 boards and cut them 2 inch square for the final
Re: [Homebrew_PCBs] Ultrasonic etching tank?
2006-11-16 by Stefan Trethan
... I have made the same suggestion a while ago, but nobody wants to try. You can line the stainless container with a plastic baggie, even use water outside of
Ultrasonic etching tank?
2006-11-16 by lwr20
Hi all, Since most things have been tried at some stage by various people in the group, I was wondering if anyone had tried speeding up PCB etching by
Re: [Homebrew_PCBs] Re: Any info about this technique?
2006-11-16 by Cláudio E. Elicker
... There is very cool lasers in http://www.wickedlasers.com Dunno if they would be suitable for the task. Anyway I guess it will be lots of fun. [] s Cláudio
Re: Any info about this technique?
2006-11-16 by john80014
Copper is used as a reflector in CO2 lasers. Most materials will absorb CO2 emissons. A 60 Watt CO2 laser would blow holes through the fiberglass in a heart
Re: [Homebrew_PCBs] Re: Any info about this technique?
2006-11-16 by Neil Baylis
Dan, I m not surprised that the 60W laser wouldn t cut copper. Copper is such a good conductor of heat that you need a pretty hefty laser to ablate it. I think
Re: [Homebrew_PCBs] Re: Any info about this technique?
2006-11-16 by Cristian
... Any isolation sw from any milling pcb machine will do the job. Also some ulp from Eagle. You can try the demo of IsoCAM from www.bungard.de Cristian
Re: [Homebrew_PCBs] Re: Any info about this technique?
2006-11-16 by Neil Baylis
There are always plenty of laser diodes available on eBay. I have enough experience with them to make the laser part work. It involves getting a laser diode,
Re: [Homebrew_PCBs] Re: Any info about this technique?
2006-11-16 by Dan Pickard
lcdpublishing wrote: Neil, This process sounds very interesting using a laser. I had planned to try something similar using the
Re: [Homebrew_PCBs] limited success
2006-11-16 by Stefan Trethan
... I ve been there, done that, and it was a PITA. Slow like you wouldn t believe, resolution as bad as it gets, uneven line width because of uneven speed,
Re: [Homebrew_PCBs] Direct toner print
2006-11-16 by Stefan Trethan
... We ve been there, done that. I d have told you if you had asked ;-) The problem is you only transfer toner by chance now, half or more than half of it
Re: [Homebrew_PCBs] Re: Any info about this technique?
2006-11-16 by Cristian
This is not an answer, but I think is good to find an IR laser, as they are cheap, and a IR-absorbant lacquer, maybe black.
Re: Any info about this technique?
2006-11-16 by lcdpublishing
Neil, This process sounds very interesting using a laser. I had planned to try something similar using the machine I am building but a Scratch tool as
Re: [Homebrew_PCBs] Direct toner print
2006-11-16 by Lez
... Yup. ... But I was thinking it may not be needed, and as the photo s show, it worked! ... Yes as a sideline when not doing PCB s we can now do
Re: [Homebrew_PCBs] Direct toner print
2006-11-16 by Leon Heller
... From: Lez To: Sent: Thursday, November 16, 2006 10:23 AM Subject: [Homebrew_PCBs] Direct
Direct toner print
2006-11-16 by Lez
Ok I had asked about direct toner print and was told of all the possible problems with the HV static holding etc so I stuck with TT well after doing all these
Re: [Homebrew_PCBs] limited success
2006-11-16 by Lez
... draw the resist direct, as I dont work with SMD etc the resolution will be fine. ... I dont have a spare fuser........ I m really thinking of sending this
Re: [Homebrew_PCBs] Any info about this technique?
2006-11-16 by Leon Heller
... From: Neil Baylis To: Sent: Wednesday, November 15, 2006 11:11 PM Subject: [Homebrew_PCBs] Any
Re: [Homebrew_PCBs] limited success
2006-11-15 by Stefan Trethan
... to do what, exactly? Why do you not use a fuser unit or laminator? Why do you torture yourself with the iron? ST
Any info about this technique?
2006-11-15 by Neil Baylis
I don t know what this is called, but I assume there are folks making PCBs this way: 1: Coat the copper board with a thin film of lacquer 2: Use a laser to
limited success
2006-11-15 by Lez
Well I am getting really bored with TT After spending all day printing and ironing the one in the middle looks like its worth etching
Re: [Homebrew_PCBs] Re: I need a 'file' in cpgl or ccgl
2006-11-15 by Lez
... I l change the chip, it does have a 1488 but no 1489, some transistors. It has pin 20 connected to them so its using at least one handshake. Baud rate etc
Re: I need a 'file' in cpgl or ccgl
2006-11-15 by jzmuda2000
Given the vintage of this thing, you will be looking for 1488 and 1489 (TTL RS232 level convertor chips) chips. Try putting a scope on the TTL data lines
Re: [Homebrew_PCBs] Re: I need a 'file' in cpgl or ccgl
2006-11-15 by Lez
... Yeah none of its pins seems to change state no matter what I put into it, it does have another connector, a round one 8 pins, like old hifi tapedecks used,
Re: [Homebrew_PCBs] Re: Direct Inkjet - Stylus 740
2006-11-14 by Stefan Trethan
... I have not had success with similar printers, because the printout would never come out good enough (lines etc.). That s why i feel that resolution/nozzle
Re: [Homebrew_PCBs] Re: Direct Inkjet - Stylus 740
2006-11-14 by Paul Symansky
Thanks for the kind words, Stefan. I think my original post may have sounded as if this project was coming along a little too easily, though. I just wanted
Re: [Homebrew_PCBs] Re: Direct Inkjet - Stylus 740
2006-11-14 by Stefan Trethan
... Best of luck with the actual etching. I look forward to hearing about further results, hoping for a clarification about those older model printers. ST
Re: [Homebrew_PCBs] Re: Direct Inkjet - Stylus 740
2006-11-14 by Paul Symansky
Sure thing! I just snapped a few quick pictures and posted them on flickr: http://www.flickr.com/photos/43099110@N00/sets/72157594376268180/ Tell me if
Re: Direct Inkjet - Stylus 740
2006-11-14 by James Newton
... I would absolutly LOVE to see pictures of your work on that so far. Especially if you could get closeups of the items you mentioned in this post.
Re: I need a 'file' in cpgl or ccgl
2006-11-14 by Scott Monsma
Maybe its time to pop it open- see if you can trace the serial signal from the connector into the innards of the plotter? I doubt it has a blown Max232
Re: I need a 'file' in cpgl or ccgl
2006-11-13 by scratch_6057
... LEDS ... The issue you re having MIGHT be Hypertreminal. I had a problem the other night with a BasicStamp / Pic PC serial comm. project I m working on.
[Homebrew_PCBs] Direct Inkjet - Stylus 740
2006-11-13 by Paul Symansky
Hey everyone, I just joined this group, and I thought I d let you all know how I m doing with an Epson Stylus 740 I picked up for $10. I stripped it down
Re: [Homebrew_PCBs] I need a 'file' in cpgl or ccgl
2006-11-13 by Lez
... emm, no ground ? Ok I ll try connecting pin1 to pin1, and with/without ground. As to crossover 2-3 3-2, that wont work, it needs 2-2 and 3-3 this has been
Re: [Homebrew_PCBs] I need a 'file' in cpgl or ccgl
2006-11-12 by Jesse Smith
The 2-2 and 3-3 connection is a straight through connection. This kind of connection is for 2 dissimilar devices to communicate, ie Data Terminal Equipment
Re: [Homebrew_PCBs] I need a 'file' in cpgl or ccgl
2006-11-12 by Lez
I ll try with eagle later, just tried winline and no response. To recap, I made a 3 wire cable, and the PC is sending, I checked this with a dongle with LED s
Re: [Homebrew_PCBs] I need a 'file' in cpgl or ccgl
2006-11-12 by Fake_Name
I wound up getting my plotter to work with the supplied drivers by using an older version of pscrpt.dll. As far as your problems go, I believe some plotters
Re: [Homebrew_PCBs] I need a 'file' in cpgl or ccgl
2006-11-12 by YD
... You also need to set stuff like bitrate, parity and stop-bit. Have you tried searching for the manual on-line? Your favourite PCB package should be able to
Re: [Homebrew_PCBs] I need a 'file' in cpgl or ccgl
2006-11-12 by Cláudio E. Elicker
On Saturday 11 November 2006 19:17, Lez wrote: ... Try Eagle PCB. It can output files in CALCOMP, CALCOMPE and CALCOMP_M84 formats, as stated in his CAM
I need a 'file' in cpgl or ccgl
2006-11-11 by Lez
I have got to the end of the road with this plotter. I have made a few test cables, I have bought a rs232 dongle with LEDS in so I can see whats going on, and
Re: Professional PCBs?
2006-11-11 by killerobot9000
... time ... You can always sell the old printer =P and buy a new one w/ toner on ebay. You probably can sell it high enough to cover shipping :)
Re: [Homebrew_PCBs] Re: Professional PCBs?
2006-11-11 by Stefan Trethan
On Sat, 11 Nov 2006 20:51:44 +0100, killerobot9000 ... Sure. I just don t like the idea of having to buy a new printer each time i run out of toner. ST
Re: Professional PCBs?
2006-11-11 by killerobot9000
... off ebay ... Well, a lot of the ones I saw include a brand new box of toner. 1 1/2 - 2 boxes of toner should be MORE than enough for like 500 or so PCBs? I
Re: [Homebrew_PCBs] Re: Professional PCBs?
2006-11-11 by Stefan Trethan
... The static does not charge the paper, it creates a field that pulls the toner against the paper. So by charging the whole copper sheet you would probably
Re: [Homebrew_PCBs] Re: Professional PCBs?
2006-11-11 by Lez
... Well maybe its all in the printer, l may be lucky! I think problem will be the static wont be able to work through the copper to pull the toner off the