File - monthly.txt
2015-02-01 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change
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Re: [Homebrew_PCBs] Other printers for DLP?
2015-01-07 by Mark Lerman
There are other Lexmark models that work, but I ve been sworn to secrecy by the person who modified one who wants to keep the price down for now. HP printers
Other printers for DLP?
2015-01-06 by doyle51241@...
Anyone have any success with printers other than the Lexmark or the Ell 1720? Mark: Any thoughts on why those printers work but not the HPs? LeMar
Re: Publicly usable pictures of soldering / PCB.
2015-01-06 by alienrelics@...
I m famous! Steve Greenfield AE7HD
Re: Publicly usable pictures of soldering / PCB.
2015-01-05 by jamesmichaelnewton@...
Steve, those are perfect! Thanks so much.
Re: laminator pcb dry film
2015-01-04 by rfmicrowave1@...
Thank all Roberto
Re: laminator pcb dry film
2015-01-04 by rfmicrowave1@...
Thank
Re: Publicly usable pictures of soldering / PCB.
2015-01-04 by alienrelics@...
Look for a PM with the pictures attached. Let me know if there is anything you d like changed, I can always retake. Steve Greenfield AE7HD
Re: Publicly usable pictures of soldering / PCB.
2015-01-03 by jamesmichaelnewton@...
Steve, as usual, YOU are the guy who steps up to the plate. I would very much appreciate that photo.
Re: Publicly usable pictures of soldering / PCB.
2015-01-03 by jamesmichaelnewton@...
Paul, I had the same idea... It s been over a week since I emailed them (and two other mfgrs) and no reply yet.
Re: Publicly usable pictures of soldering / PCB.
2015-01-03 by jamesmichaelnewton@...
Clark, as I said: I don t use a flux pen (I just brush it on from a bottle)... so I can t take /that/ picture myself. I have taken many of the other pictures
Re: Publicly usable pictures of soldering / PCB.
2015-01-03 by Paul Alciatore
You might ask the manufacturers of the flux pens for permission to use their photos. I would think they would appreciate the publicity.
Re: Publicly usable pictures of soldering / PCB.
2015-01-02 by alienrelics@...
James, if you don t have something yet, I have a flux pen and can take a similar image if you wish. Steve Greenfield AE7HD
File - monthly.txt
2015-01-01 by Homebrew_PCBs@yahoogroups.com
Monthly Reminder for Homebrew_PCBs list, please read: Messages and threads: Please do NOT start a new thread by replying to another message. Even if you change
Re: [Homebrew_PCBs] Publicly usable pictures of soldering / PCB.
2014-12-31 by Misc Clark
Jim - sounds like a worthy endeavor - teaching people how to solder... How widespread is flux pen use, anyway? Can t you take your own pictures of the pen in
Publicly usable pictures of soldering / PCB.
2014-12-31 by jamesmichaelnewton@...
Short version: Please take and post photos of things involved in PCBs and soldering. There aren t very many pictures out there available to show people how to
Re: laminator pcb dry film
2014-12-30 by kbyrne10@...
Check into Pulsar Pro web site for info that you are asking for. Make your own custom DRY TRANSFERS in less than 10 minutes with DecalPRO
laminator pcb dry film
2014-12-29 by rfmicrowave1@...
hello all,what type of laminator recommended? printed circuit boards with Negative Photosensitive Dry Film. You can make fine pitch professional quality PCBs
Laminator pcb
2014-12-29 by rfmicrowave1@...
Hello all,help pcb using photoresist dry film negative what type of laminator recommended? printed circuit boards with Negative Photosensitive Dry Film. You
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-27 by Marc OLANIE
Me stupid. Yes. I ll try to ask a retired guy who used to work for Lexmark since the spin off from IBM. He should know, or know who to ask. Marc
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-27 by Mark
No, the Transfer Roller voltage is not at all necessary for the printer to work (on pcbs). What it is necessary for is cleaning up the drum after the print is
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-27 by Marc OLANIE
?I think putting a simple switch on the red roller wire would approximately do the same result (even if it s definitely not the origin of my bug). I m
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-27 by Mark
Your problem is really interesting. There have been many times I would have liked to have been able to cycle the printer without actually printing anything.
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-27 by Marc OLANIE
?Thanks for the advice. It seems obvious, but it s worth mentioning . I keep you informed of the evolution. Tnks agn Marc ________________________________ De :
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-27 by Mark Lerman
Hi Marc, Well, it is certainly resolvable . The hack does work and has been repeated numerous times. I m not sure I would replace the laser mechanism,
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-27 by Marc OLANIE
?Hi Mark The situation here is still the same. The diags given by the service manual don t helps a lot... after having verified all connectors (and
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-26 by Mark Lerman
Marc, Did you get it working? Mark At 11:14 AM 12/25/2014, you wrote:
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-25 by Marc OLANIE
?Hi Mark ... a used one, almost never used ... I did. It was printing perfectly ... as far as I can see, yes. ... Absolutely. The transfer roller is in place
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-25 by Mark Lerman
Marc, Was this a new printer? Did you test it before hacking it to be sure it worked correctly. Do you have a spare drum and/or cartridge to try? Are all the
RE: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-25 by Marc OLANIE
?Hi Mark The printer cycles perfectly. LED is green when finished, hole in the carrier has been drilled and is detected by the MCU (easy to test : the carrier
Re: [Homebrew_PCBs] Re: DLP MCU version troubleshooting, help needed
2014-12-25 by Mark Lerman
Hi Marc, Does the printer cycle correctly - all green lights when it finishes? Did you remember to drill a hole in the carrier to trigger the NPIS? Is the hole
Re: DLP MCU version troubleshooting, help needed
2014-12-25 by Marc.olanie@...
Hi Mark First problem solved (bad contact on the thermistor s connector). printing process is running perfectly now, exepted one small detail : no toner on the
RE: [Homebrew_PCBs] DLP MCU version troubleshooting, help needed
2014-12-24 by Marc OLANIE
Hi Mark Tnks for your prompt answer. The initial diagnostic ends with a green light, the motor then starts after 4 secs. and keeps on Rolling :- )) The
Re: [Homebrew_PCBs] DLP MCU version troubleshooting, help needed
2014-12-24 by Mark
Hi Marc, It will take me a few days to get to this, probably Friday. I ll get back to you. When you turn the printer on does it go through its initialization
DLP MCU version troubleshooting, help needed
2014-12-22 by Marc.olanie@...
At last, I finished the « hardware » mods and wired the MCU… So far, so good. But the rig don’t seems to work. I’m checking again and again all the
RE: [Homebrew_PCBs] Re: laser ablation of paint on copper clad
2014-12-22 by Tony Smith
The film would be like regular camera film, sensitive to visible light. It won’t be photoresist. It’s for doing PCBs (or whatever) with photoresist; film
RE: [Homebrew_PCBs] Re: laser ablation of paint on copper clad
2014-12-22 by Tony Smith
Because 670nm is smaller than 0.005mm, 0.00067mm to be exact. That 0.00067 is the smallest possible spot size, you’ll never achieve that due to blah blah
RE: [Homebrew_PCBs] Re: laser ablation of paint on copper clad
2014-12-20 by Jeff Heiss
The Bungard photoplotter uses a red 670nm laser diode. The spot size is 0.005mm/0.0002inches which produces 5,000 dpi resolution. How is a 0.005mm spot size
RE: [Homebrew_PCBs] Re: laser ablation of paint on copper clad
2014-12-20 by Tony Smith
They’re YAG lasers, so yeah $$$$$ is right. Spot size starts with wavelength, smaller wavelength = small spot, so UV
Re: [Homebrew_PCBs] Re: laser ablation of paint on copper clad
2014-12-19 by Camillus
HI, jeff On this page : http://www.beamtech-laser.com/en/proInfo.aspx?m=20101216100729203892&n=20101222115304745038&protype=20101216101714765927 they speak of
Re: [Homebrew_PCBs] Re: laser ablation of paint on copper clad
2014-12-19 by jeff.heiss@...
The Bungard drum plotter has laser spot size of 0.005mm/0.0002inches. This is a resolution of 5,000 dpi. The laser inside is a red 670nm laser. How do they
Re: [Homebrew_PCBs] A short story of the Selenium Photo-sensitive Drum.
2014-12-16 by Mark
I m pretty sure I once experimented with Brother printers and was able to get it to work without the fuser. I guess one way you could do it is to use a
Re: [Homebrew_PCBs] A short story of the Selenium Photo-sensitive Drum.
2014-12-16 by Slavko Kocjancic
On 16. 12. 2014 13:52, Mark Lerman mlerman@ix.netcom.com [Homebrew_PCBs] ... Choosen printer is not available here on cheap. Nor the toner/drum. I sniffing
Re: [Homebrew_PCBs] A short story of the Selenium Photo-sensitive Drum.
2014-12-16 by Mark Lerman
Less time, perhaps not 5 mil, but close: Mark
Re: [Homebrew_PCBs] A short story of the Selenium Photo-sensitive Drum.
2014-12-16 by Slavko Kocjancic
Hello... Producting PCB this way takes even longer time that a coating PCB with photoresist and imaging with laser. And I can confirm that photoresist and
A short story of the Selenium Photo-sensitive Drum.
2014-12-15 by howard.chester@...
This is to reference to the discussion about LASER Printer build A short story of the Selenium Photo-sensitive Drum. In the seventies, small Company offices
Re: [Homebrew_PCBs] Re: laser ablation of paint on copper clad
2014-12-15 by Slavko Kocjancic
On 14. 12. 2014 06:09, Camillus camillus_blockx@hotmail.com ... I didn t work with propeller at all. But now I do quick check. And if I understand correctly
Re: [Homebrew_PCBs] laser printer rebuild
2014-12-15 by Slavko Kocjancic
On 14. 12. 2014 06:35, Camillus camillus_blockx@hotmail.com ... Forget to use that. The laser wavelength is just in oposite side of light spectrum. The lenses
Re: [Homebrew_PCBs] laser printer rebuild
2014-12-15 by Harvey White
... Ok, there s no photoresist on the drums. The drum used to be coated in a selenium compound (that s one possibility), it s not something that you can
Re: [Homebrew_PCBs] Re: laser ablation of paint on copper clad
2014-12-14 by Brad Thompson
Hello-- This gentleman is using a 25W laser cutter to remove flat-black spray paint from unetched copperclad board: http://www.youtube.com/watch?v=OTGZcY7WyYI