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10912Re: [cosmacelf] Old eyes and new chips.

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  • Andrew Wasson
    Aug 1, 2012
      Wouldn't you know it, I bought one for my dad a few years ago for his birthday; he's an analog, tube guy. No sooner had I given it to him and I discovered I was having a heck of a time reading the tops of my IC's unless I had floodlights on and aimed at the part over my shoulder. I now have readers and one of those circle magnifiers myself.


      On 2012-08-01, at 7:57 AM, bill rowe wrote:

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      > me 3. I have one of those fluorescent circle magnifier lamps that i need now for *any* close work. The worst thing now is that I'll get a headache after 15 minutes of using it. I also have a 10 power loupe that i need for checking solder connections - especially surface mount. I did use a few surface mount chips on the olduino - the soic ones are not too bad at 1/20 inch pitch. I could, just barely have used a tqfp package for the avr - 1/40" pitch but i chickened out. I actually find the passive smd components tougher to solder just because they are so *darn* small. One resonator i tried to use had 3 pads, maybe a 1/2 mm apart and a little metal cap on top so you could burn yourself holding it or make a nice little solder bridge. I am on the lookout for a used electric frying pan so i can try my hand at reflowing.
      > To: cosmacelf@yahoogroups.com
      > From: leeahart@...
      > Date: Tue, 31 Jul 2012 23:00:14 -0500
      > Subject: Re: [cosmacelf] Re: Books and schematisc found
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      > On 7/31/2012 10:22 PM, joshbensadon wrote:
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      >> I've got that diminishing vision problem too...
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      > I have to live with it, too. That's why there is no surface mount in the
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      > Membership Card. I couldn't see to assemble it!
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      > Clamped to my workbench, I've got one of those circular fluorescent
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      > lights at the end of an articulated arm that has a big magnifying lens
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      > in the center. Without that, I'd be looking for another hobby.
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      > --
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      > Humanity is acquiring all the right technology for all the wrong
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      > reasons. -- R. Buckminster Fuller
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      > --
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      > Lee A. Hart http://www.sunrise-ev.com/LeesEVs leeahart@...
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      > ------------------------------------
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      > ========================================================
      > Visit the COSMAC ELF website at http://www.cosmacelf.comYahoo! Groups Links
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      Andrew Wasson | Luna Design
      1651 West 15th Street,
      North Vancouver BC., V7P 1N3
      604 987-2850







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