Rickta59 589 Posted December 28, 2011 Share Posted December 28, 2011 Did this yesterday. Nice curvy traces! Is there any advantage to curves over 45 degree ones? -rick Quote Link to post Share on other sites
bluehash 1,581 Posted December 28, 2011 Share Posted December 28, 2011 I noticed them too.. Probably for high frequency signals. Quote Link to post Share on other sites
MattTheGeek 99 Posted December 28, 2011 Share Posted December 28, 2011 Did this yesterday. Nice curvy traces! Is there any advantage to curves over 45 degree ones? -rick Electrically, no. However, using curved traces can sometimes increase trace density. Quote Link to post Share on other sites
oPossum 1,083 Posted December 30, 2011 Share Posted December 30, 2011 Looks good opossum. Is this a personal project or something you plan to make kits off. Nice to see more display packs come up. It is just an idea I had. I noticed that the Nokia 5110 display boards all look very similar, but are not identical. They have different pin locations, pinouts, mounting hole locations, and circuits. I learned this the hard way. So I thought it would be good to have a LP booster that used the 5110 bare LCD module. A LP sized PCB (2.0 x 2.6") has room for the LCD and quite a bit of unused space. So I put some switches in the unused area. Still some space left, so added a jumper block to configure I/O. Not much on the back side of the board, so added a SMT DIP socket to make it stand alone rather than a booster. A SPI EEPROM would be handy for storing graphics and fonts, so added that too. Not sure what I will do with this. Don't have any specific need for it right now, but that could change. The curved traces are just style. There is no electrical reason for it. I sometimes do it just because I like the look. Reminds me of boards that where done with tape on mylar. Quote Link to post Share on other sites
zeke 693 Posted December 30, 2011 Author Share Posted December 30, 2011 The curved traces are just style. There is no electrical reason for it. I sometimes do it just because I like the look. Reminds me of boards that where done with tape on mylar. Dude! You're dating yourself with that comment! I guess I am too since I know exactly what you mean I had a summer job back in 1987. We made film positives from the mylar tape pcb masters. I made >480 boards by hand that summer. I still remember every single step of the board making process. I just wished I could remember the recipe for the etching solution. As a side effect, I have the resistor color codes burned into my long term memory. Quote Link to post Share on other sites
oPossum 1,083 Posted December 30, 2011 Share Posted December 30, 2011 I am rather ancient. In '87 I was using AutoCAD 2.xx to do some PCB. I think it would have been faster to do it on mylar. Here is a video showing PCB design and mfg at Tektronix in the late 60's. Design is on mylar, and GOLD is used as etch resist! It think HP may have used similar mfg method. I have old HP gear with gold PCB. pine 1 Quote Link to post Share on other sites
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