First usable PCB!

  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.
  • warning: Creating default object from empty value in /home/jeffreygough/drupal4/sites/warrantyvoidifremoved.com/modules/spam/spam.module on line 488.

I replaced the photointerruptor with a microswitch to eliminate uncertainty where the edge of the PCB left the sensor. I added no debouncing initially, as I couldn't be bothered.

The results were disappointing - about the same as with the optical sensor. So that pretty much persuaded me that the optical sensor is as reliable as the microswitch. Adding debouncing could possibly help. I reckon the board goes at about 0.2ms-1. With a switch bounce time of, say, 5ms that gives 1mm of potential dodginess. Hmm, possibly quite significant!

Then I noticed the left guide fence wasn't perfectly square with the input rollers. A long way back I moved the left guide fence further left, and before that I think alignment was better. That was when I printed a perfect 0.1mm grid twice.

So I removed a screw, squared up the fence and re-drilled it. Alignment improved dramatically.

Here's a printed board. I was trying to avoid printing twice, so I sanded the board first. The image quality was still not good enough, so I printed again. Here is the finished print - two runs, fused after each, ready for etching:

Here it is after etching, modelled by Rob:

After stripping, ready for solder:

So where to go from here? Hmm. Two major issues remain:

1) At the moment I can only align repeatably if the imaging process starts AFTER the board enters the imaging rollers. This is because there is some variance creeping in where the driven rollers mash the board into the image rollers. This means the top 40mm of board is wasted each time.

2) When the trailing edge leaves the sprung drive rollers they ping together, giving the board a little kick forward, resulting in a smear. So either I don't print on the last portion (yet more wastage) or I devise a means of lifting the sprung roller as the end of the board approaches.

Before I approach either of those, I will first add drive to the top rubber roller. I think this will make loading the board easier (at the moment it requires quite a push to enter the rollers), paving the way for automated loading.

I'm also quite tempted to investigate a colour laser printer as some are designed for highly repeatable imaging. It would also allow me to print coloured solder masks and silkscreens. The HP 2100 that I'm currently working on is only a home/small business machine, so not as well made as a more expensive one. The 4550 looks like a possible candidate as it is old (read well made, with nice, modular construction), colour, and possibly quite cheap on ebay.

Going to see how far I can get with the current arrangement though, as a new printer is a major investment of time.

Submitted by jeff on Thu, 03/15/2007 - 16:02. categories [ ]

I found the information

I found the information quite helpful.Thanks for sharing this excellent information.I was in search of this vital information since long time.
power of sale

Looks like my old pink

Looks like my old pink digital camera, when I disassembled it.

Warranty Void if Removed | Collected technological projects

Useful info. Lucky me I discovered your site by accident, and I am shocked why this coincidence did not happened earlier! I bookmarked it. Also visit my web-site; lanyards personnalisés

Warranty Void if Removed | Collected technological projects

Hello to every one, as I am in fact keen of reading this website's post to be updated daily. It consists of pleasant stuff. Feel free to surf to my blog :: valid email list

Warranty Void if Removed | Collected technological projects

Good info. Lucky me I discovered your blog by chance (stumbleupon). I've saved as a favorite for later! Here is my web-site: Agen Bola Deposit 50rb

Warranty Void if Removed | Collected technological projects

Además de esto ayuda a regular el exceso de grasa en la piel. Have a look at my blog: Young

Warranty Void if Removed | Collected technological projects

This blog was... how do I say it? Relevant!! Finally I have found something which helped me. Thanks! Here is my homepage - Fabrica de hornos Pizzeros

Warranty Void if Removed | Collected technological projects

Hello there! This post couldn't be written any better! Reading this post reminds me of my old room mate! He always kept talking about this. I will forward this post to him. Pretty sure he will have a good read. Many thanks for sharing! Also visit my site; venta de hornos pizzeros zona sur

Warranty Void if Removed | Collected technological projects

Its like you read my mind! You appear to know a lot about this, like you wrote the book in it or something. I think that you could do with some pics to drive the message home a little bit, but other than that, this is fantastic blog. A great read. I will certainly be back. Feel free to visit my web-site; sprawd? nas

Warranty Void if Removed | Collected technological projects

casinos online best online casino play casino games online kasino casino online

Warranty Void if Removed | Collected technological projects

Heya i'm for the primary time here. I found this board and I in finding It truly helpful & it helped me out much. I'm hoping to provide one thing again and help others like you helped me. Feel free to visit my blog post minimarket self

Warranty Void if Removed | Collected technological projects

online casino slots slot game best online casino slot online online casino real money

Warranty Void if Removed | Collected technological projects

phân ?h?i du an vincity ?eel frre to vvisit my w?blog ... chung c? vincity gia lâm

Warranty Void if Removed | Collected technological projects

online casino gambling slot game best online casino play casino games online online gambling casino

Warranty Void if Removed | Collected technological projects

hello there and thank you for your info – I've definitely picked up something new from right here. I did however expertise several technical points using this site, since I experienced to reload the site lots of times previous to I could get it to load correctly. I had been wondering if your web hosting is OK? Not that I am complaining, but slow loading instances times will sometimes affect your placement in google and can damage your high quality score if ads and marketing with Adwords. Anyway I'm adding this RSS to my e-mail and can look out for much more of your respective interesting content. Ensure that you update this again soon. Stop by my page - michael kors

Warranty Void if Removed | Collected technological projects

If some one wishes to be updated with hottest technologies therefore he must be pay a quick visit this web site and be up to date every day. my web-site; oakley frogskins

Warranty Void if Removed | Collected technological projects

Hi to every one, because I am in fact keen of reading this blog's post to be updated daily. It contains nice material. Here is my web site: ekogroszek wieczorek

Warranty Void if Removed | Collected technological projects

Hi to every one, because I am actually keen of reading this weblog's post to be updated on a regular basis. It consists of pleasant stuff. Also visit my homepage Daftar Judi

Warranty Void if Removed | Collected technological projects

phân ph?i d? an vincity My web-site: vincity gia lâm

Warranty Void if Removed | Collected technological projects

Keep this going please, great job! Feel free to surf to my page: game answers

Warranty Void if Removed | Collected technological projects

Nice post. I used to be checking constantly this weblog and I'm impressed! Very useful information particularly the last part :) I care for such info much. I used to be seeking this particular info for a very long time. Thanks and best of luck. My web blog - free v bucks on fortnite

Warranty Void if Removed | Collected technological projects

I visited various websites but the audio feature for audio songs current at this website is really wonderful. my web site: Judi Bola

Warranty Void if Removed | Collected technological projects

I have been surfing online more than three hours today, yet I never found any interesting article like yours. It's pretty worth enough for me. In my opinion, if all webmasters and bloggers made good content as you did, the web will be much more useful than ever before. Feel free to surf to my web-site - Alabama Crimson Tide (hanbitenv.com)

Warranty Void if Removed | Collected technological projects

Other places to play video gaming are on cell phones, PDAs, graphing calculators, GPS receivers, MP3 players, digital cameras and watches however these don't have nearly the identical experience and dimension as the mentioned before platforms. And it will improve the shutter speed hence the photo isn't overexposed through the extra light allowed together with the more expensive aperture. s associated with a hopeless puzzle that, at best, is just baby sitting him just as one intellectual. Review my site :: site

Warranty Void if Removed | Collected technological projects

phân ph?i du an vincity ?eel fr?e to surf tto my web-site vincity gia lâm

Warranty Void if Removed | Collected technological projects

What's up it's me, I am also visiting this site on a regular basis, this web page is truly good and the people are in fact sharing pleasant thoughts. My blog post :: zona norte

Warranty Void if Removed | Collected technological projects

Helpful information. Lucky me I discovered your website by chance, and I'm surprised why this twist of fate did not took place in advance! I bookmarked it. Visit my homepage; fabrica de hornos pizzeros en ciudadela

Warranty Void if Removed | Collected technological projects

Normally, most free people are unable to get something, and participants that are fresh find yourself sticking with the number of free things within the catalog.|and it played since Roblox is more about producing various games and after that generating them available for the rest of its online community to play where Minecraft is anxious with making one albeit vast and creative world.|enjoyed with it since We need to learn the edition of one's platform to choose compatible games for the device. My web page ... roblox robux generator

Warranty Void if Removed | Collected technological projects

I know this website gives quality dependent articles or reviews and additional material, is there any other web site which provides these things in quality? Have a look at my web page :: minecraft

Warranty Void if Removed | Collected technological projects

A real luxury hotel in the course of the city. My web-site; hoteles baratos en guadalajara

Warranty Void if Removed | Collected technological projects

Fantastic website. A lot of helpful info here. I am sending it tto a few pals ans also sharong in delicious. Annd of course, thank you to yoiur sweat! Also visit my page: Richie

Warranty Void if Removed | Collected technological projects

Greetings! Very helpful advice within this post! It is the little changes which will make the most significant changes. Thanks a lot for sharing! Take a look at my web blog: sprawd?

Warranty Void if Removed | Collected technological projects

Hi, i think that i saw you visited my website thus i came to “return the favor”.I am trying to find things to enhance my site!I suppose its ok to use a few of your ideas!! Also visit my webpage ... para que es bueno la ortiga verde

Warranty Void if Removed | Collected technological projects

I used to be back from school for winter break when I met my mom's new boyfriend for the earliest time. My parents divorced when I'm five, therefore it wasn't as it was traumatic or anything to satisfy the guy. I didnt expect him to become so damn hot, though. He's a personal trainer, and fit as hell—six-pack-abs-and-ripped-arms fit, like the simple truth is in advertisements for losing weight fast supplements and gym memberships. When he rang the doorbell one night around 6pm looking for my mom, who was out at the time, Choice to play hostess inside my comfy but clingy sweats. I invited him inside and poured us each a glass of wine. A few hours later, we were two bottles deep and neither folks had heard from my mother. I made the 1st move, touching his knee after which it sliding me up his inner thigh. When I obtained to his crotch, he leaned back and said, ‘Fuck it!' Create stood up. I stood up too, to the seat of the couch. Then I jumped into his arms, legs wrapped tightly around his waist and impressively firm ass. His dick felt so excellent poking through his pants, rubbing on my vagina, I knew I could orgasm from dry humping him similar to that. But I wanted him inside me, so I reached down and grabbed it. We fucked—fast—while in the laundry room, where there were a look at the driveway should my mom came back. Most of our clothes continued to be on, and we powered in the washer thus it would vibrate beneath me because he pumped and pumped, deeper and deeper. It had been the dirtiest thing I've ever done, and I'd practice it again.” Here is my page ... ???? ????? ????

Warranty Void if Removed | Collected technological projects

Hmm it looks like your website ate my first comment (it was extremely long) so I guess I'll just sum it up what I submitted and say, I'm thoroughly enjoying your blog. I too am an aspiring blog writer but I'm still new to the whole thing. Do you have any helpful hints for inexperienced blog writers? I'd really appreciate it. Review my web-site: http://xe88.vn/

Warranty Void if Removed | Collected technological projects

I'm amazed, I have to admit. Seldom do I come across a blog that's both equally educative and amusing, and without a doubt, you've hit the nail on the head. The problem is something that too few men aand women are speaking intelligently about. I am very happpy I came across this in mmy search for someting regarding this. Feel free too surf to mmy web blog: chauffeur prive nice aeroport

Warranty Void if Removed | Collected technological projects

Hi, this weekend is fastidious designed for me, as this time i am reading this fantastic educational paragraph here at my home. Here is my web blog ... jb777 game server

Warranty Void if Removed | Collected technological projects

Hi there colleagues, how is the whole thing, and what you desire to say on the topic of this post, in my view its in fact amazing for me. My web site; webcam Sex Chat

Warranty Void if Removed | Collected technological projects

Here is my site ... sklepy golfowe (Francis)

Warranty Void if Removed | Collected technological projects

Magnificent items from you, man. I have be aware your stuff prior to and you are just extremely wonderful. I actually like what you have got right here, certainly like what you are stating and the way in which by which you say it. You are making it entertaining and you still care for to stay it wise. I cant wait to read far more from you. That is really a wonderful website. My web blog ... hyundai accent

Warranty Void if Removed | Collected technological projects

Ich sofort entreißen Ihre rsss feed nicht können beei Die Grundlagen Der Kredit Im Internet - Http://Www.Bjkclh.Com/ - Suche nach E-Mail-Abonnement Hyperlink oder e-Newsletter Service. Haben Sie haben Sie überhaupt? Bitte ermöglichen me wissen , sso dass I darf nuur abonnieren. Danke.

Warranty Void if Removed | Collected technological projects

Wow Hurra, das ist, was ich Ausflüge für, Was für eine schnelle Kreditversicherung ist - undd was ees nicht ist - www.picospardos.es, für einn Material! Gegenwärtigen hier auf dieser webnlog dank Admin dieser Website website.

Warranty Void if Removed | Collected technological projects

I’m not that much of a internet reader to be honest but your blogs really nice, keep it up! I'll go ahead and bookmark your site to come back later. Cheers Visit my blog post; planta de ortiga para que sirve

Warranty Void if Removed | Collected technological projects

?hân ph?i chung c? vincity

Warranty Void if Removed | Collected technological projects

It's great that you are getting ideas from this paragraph as well as from our discussion made at this place. Also visit my web blog; adult cam2cam

Warranty Void if Removed | Collected technological projects

Eu estou indo falar para meus amigos que sigam seu site regularmente para ficarem atualizados com as noticias mais recentes ! My weblog - alimentos vencidos

Warranty Void if Removed | Collected technological projects

Przegl?daj golfowe buty, spodnie, koszulki polo, szorty oraz spódniczki PUMA noszone przez naszych ambasadorów na najtrudniejszych polach golfowych na ?wiecie. Here is my homepage: sklepy golfowe

Warranty Void if Removed | Collected technological projects

??ân ph?i ch?ng c? vincity my blog post: chung c? vincity ??i m?

Warranty Void if Removed | Collected technological projects

casino online casino online online casino casino slots casinos online

Warranty Void if Removed | Collected technological projects

Have you ever considered creating an ebook or guest authoring on other websites? I have a blog centered on the same subjects you discuss and would love to have you share some stories/information. I know my visitors would enjoy your work. If you're even remotely interested, feel free to shoot me an email. Also visit my web page; Agen Piala Dunia 2018