Post by thread:[OT] Pictures of my first home made PCB

Solarwind, Trivial point, but for better photos, adjust your white balance. Jim ----- Original Message ----- From: "solarwind" <spam_OUTx.solarwind.xTakeThisOuTgmail.com> To: "PICLIST" <.....piclistKILLspam@spam@mit.edu> Sent: Friday, August 14, 2009 2:11 AM Subject: [OT] Pictures of my first home made PCB >I finally had my camera returned to me and took a few pictures of my PCB. > > Here they are: > http://solar-blogg.blogspot.com/2009/08/pictures-of-my-first-home-made-pcb.html > > Please comment if you have anything to say. > > -- [ solarwind ] -- http://solar-blogg.blogspot.com/ > --

Looks quite tidy. Nice one 2009/8/14 solarwind <.....x.solarwind.xKILLspam.....gmail.com>: > I finally had my camera returned to me and took a few pictures of my PCB. > > Here they are: http://solar-blogg.blogspot.com/2009/08/pictures-of-my-first-home-made-pcb.html > > Please comment if you have anything to say. > > -- [ solarwind ] -- http://solar-blogg.blogspot.com/ > -

I would use a copper pour for the ground net, it makes the board look better, takes less time to etch, the etching solution lasts longer, enhances shielding and reduces ground bounce problems. Best regards, Isaac solarwind escreveu: {Quote hidden}> I finally had my camera returned to me and took a few pictures of my PCB. > > Here they are: http://solar-blogg.blogspot.com/2009/08/pictures-of-my-first-home-made-pcb.html > > Please comment if you have anything to say. > > -- [ solarwind ] -- http://solar-blogg.blogspot.com/ > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.5.392 / Virus Database: 270.13.56/2302 - Release Date: 08/14/09 06:10:00 > > __________________________________________________ Faça ligações para outros computadores com o novo Yahoo! Messenger http://br.beta.messenger.yahoo.com/

On Fri, 14 Aug 2009 03:11:14 -0400, "solarwind" <EraseMEx.solarwind.xspam_OUTTakeThisOuTgmail.com> said: > I finally had my camera returned to me and took a few pictures of my PCB. > > Here they are: > solar-blogg.blogspot.com/2009/08/pictures-of-my-first-home-made-pcb.html > > Please comment if you have anything to say. Looks great. Did you use single-sided board? Or did you etch the other side off, or peel it off by hand? Cheers, Bob -- http://www.fastmail.fm - Choose from over 50 domains or use your own

On Fri, Aug 14, 2009 at 3:16 PM, Bob Blick<bobblickspam_OUTftml.net> wrote: > Looks great. Did you use single-sided board? Or did you etch the other > side off, or peel it off by hand? Thanks. I used a single sided board. I also practiced in the corner with the drilling so there are a lot of random holes in the board. Now I know the process and how to do it. It's also very easy to drill the holes, especially when you have a small hole in the middle of the copper pad, so that the drill bit can align itself. I find that the drill bit slips on copper but is very sturdy on the FR4.

On Fri, Aug 14, 2009 at 9:50 PM, Herbert Graf <@spam@hkgrafKILLspamgmail.com> wrote: > Very true. I've never found a camera that was 100% with white balance > and contrast, even the better ones need a little post processing for the > photos to look their best. > Many times I use Google Picasa for this -- just click on the "I feel lucky" button and most of the times the result is appropriate. Tamas > > Takes a while, but well worth it. > > TTYL > > -

>> [...] for better photos, adjust your white balance. > Very true. I've never found a camera that was 100% with > white balance and contrast, even the better ones need a > little post processing for the photos to look their best. You can do essentially zero post-processing with the right techniques during the shooting session. Easiest way is to shoot an 18% gray card under the lighting (fill the frame) you will be using then select "custom white balance" (in camera menu) and use that gray card frame as the target image. You have to repeat when the lighting changes. But if you have pre-scouted out locations (say wedding with outdoors, in church, reception in restaurant, etc), you can pre-expose gray card photos as first few images on each of your memory cards. Better is use a PhotoVision Digital Calibration Target (has 3 bars: 1 white, 1 18% gray, & 1 black -- average 18% gray). Use it to set white balance (as above) then use white bar plus the camera's histogram to set highlight exposure. You take care of contrast by building your lighting setup correctly beforehand -- assuming you have control of the lights and/or have reflectors available. At this point, all the images are "proof quality" or better with no post-processing. Once you get white balance & exposure close, you can tweak it a bit further... One post-processing step that's hard to avoid is calibration of your specific camera's sensor. Shoot a ColorChecker card (from Pantone, GretagMacbeth, X-Rite, etc) then run the Photoshop calibration tool or script (depending on version of Photoshop you use). Output is a set of constants/curves for each color channel. You then bulk apply this to all of the images that you shot at a specific color temperature & ISO speed. [ Note -- the above paragraphs are a barebones introduction to these techniques. ] Lee Jones