Re: gEDA-user: howto detect missing symbols
John Doty wrote: gnetlist -g geda whatever.sch | grep WARNING: Found a placeholder/missing component, Thanks! I tried to redirect the error message of gschem. But errors seem unaffected by (logging-destination tty) in gschemrc. ---)kaimartin(--- -- Kai-Martin Knaak Email: k...@familieknaak.de Öffentlicher PGP-Schlüssel: http://pool.sks-keyservers.net:11371/pks/lookup?search=0x6C0B9F53 ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Soldering minute smt
Great advice for soldering these small SMTs! The problem we're having is keeping the chip stationary while tring to tack/solder it. I'm going to come up with a type of fixture that holds the board and a spring loaded pin capable of traveling in the X-axis and Y-axis over the board and hold the chip to the PCB. I don't suppose anyone has made one? If not, I'll provide plans of what I come up with. On Thu, Jan 27, 2011 at 7:46 PM, Kai-Martin Knaak [1]k...@lilalaser.de wrote: DJ Delorie wrote: I think the only trick is to make sure your iron's tip is BIG enough to span three or more pins, so it glides along the top instead of hitting individual pins. IMHO, it works better, if the tip features flat surfaces. The solder happily flocks to a blob on the flat surface because this minimizes the area that interfaces with the air. Convex tip surfaces do not attract molten solder this way. Worst case is the cone of a pencil-like tip. ---)kaimartin(--- -- Kai-Martin Knaak Email: [2]k...@familieknaak.de Öffentlicher PGP-Schlüssel: [3]http://pool.sks-keyservers.net:11371/pks/lookup?search=0x6C0B9F53 ___ geda-user mailing list [4]geda-user@moria.seul.org [5]http://www.seul.org/cgi-bin/mailman/listinfo/geda-user References 1. mailto:k...@lilalaser.de 2. mailto:k...@familieknaak.de 3. http://pool.sks-keyservers.net:11371/pks/lookup?search=0x6C0B9F53 4. mailto:geda-user@moria.seul.org 5. http://www.seul.org/cgi-bin/mailman/listinfo/geda-user ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Soldering minute smt To:
Thanks William On Thu, Jan 27, 2011 at 7:09 PM, william estrada [1]mrumun...@cruzio.com wrote: I found this yesterday: [1][2]http://www.sparkfun.com/tutorials/59 Hope it helps? Message: 9 Date: Thu, 27 Jan 2011 10:47:37 -0500 From: Rob Butts [2][3]r.but...@gmail.com Subject: gEDA-user: Soldering minute smt To: gEDA user mailing list [3][4]geda-user@moria.seul.org Message-ID: [4][5]aanlktin1fsxvj4hnec1w9zedq4g5+jnxmmngmvw9e...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Holy miniature footprints Batman!!! I'm trying to solder a 10 pin MSOP chip to a home made circuit board. The pitch of this chip is just 0.5 mm. We tried using the slightests of dabs of solder across the pins and then used a heat gun the melt the solder but now I have a chip soldered down with two five pin solder blobs on each side. My next step is to use solder wick to try and wick up the excess but I wanted to see if there is a better way of doing this first. Thanks -- William Estrada Mt Umunhum, CA, USA [5][6]HTTP://64.124.13.3 ( Mt-Umunhum-Wireless.net ) Skype: MrUmunhum References 1. [7]http://www.sparkfun.com/tutorials/59 2. mailto:[8]r.but...@gmail.com 3. mailto:[9]geda-user@moria.seul.org 4. mailto:[10]AANLkTin1FSxvJ4HnEC1w9ZEdq4G5+JnXMmNgmvW9EZJt@mail.gmail. com 5. [11]http://64.124.13.3/ ___ geda-user mailing list [12]geda-user@moria.seul.org [13]http://www.seul.org/cgi-bin/mailman/listinfo/geda-user References 1. mailto:mrumun...@cruzio.com 2. http://www.sparkfun.com/tutorials/59 3. mailto:r.but...@gmail.com 4. mailto:geda-user@moria.seul.org 5. mailto:aanlktin1fsxvj4hnec1w9zedq4g5%2bjnxmmngmvw9e...@mail.gmail.com 6. http://64.124.13.3/ 7. http://www.sparkfun.com/tutorials/59 8. mailto:r.but...@gmail.com 9. mailto:geda-user@moria.seul.org 10. mailto:aanlktin1fsxvj4hnec1w9zedq4g5%2bjnxmmngmvw9e...@mail.gmail.com 11. http://64.124.13.3/ 12. mailto:geda-user@moria.seul.org 13. http://www.seul.org/cgi-bin/mailman/listinfo/geda-user ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Soldering minute smt
I don't suppose anyone has made one? http://dammitcoetzee.com/2009/07/how-to-make-soldering-fine-pitch-surface-mount-rediculously-easy/ ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Soldering minute smt
A good pair of tweezers works for me. note a good pair, not garden variety, I curse when I get to a lab that has bad/cheap tweezers. http://www.techni-toolcatalog.com/lg_display.cfm/catalog/128/page/243 I have a set of their ceramic tipped tweezers that are fantastic. Steve On Fri, Jan 28, 2011 at 9:09 AM, DJ Delorie d...@delorie.com wrote: I don't suppose anyone has made one? http://dammitcoetzee.com/2009/07/how-to-make-soldering-fine-pitch-surface-mount-rediculously-easy/ ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: Paying $5 paypal to make these two footprints, easy money
I hate making symbols, anybody want to make some quick money? http://documents.tycoelectronics.com/commerce/DocumentDelivery/DDEController?Action=srchrtrvDocNm=1478031DocType=CDDocLang=EN http://documents.tycoelectronics.com/commerce/DocumentDelivery/DDEController?Action=srchrtrvDocNm=640454DocType=CDDocLang=EN ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Paying $5 paypal to make these two footprints, easy money
http://documents.tycoelectronics.com/commerce/DocumentDelivery/DDEController?Action=srchrtrvDocNm=1478031DocType=CDDocLang=EN JUMPER6 but yours is a little wider, that's all. http://documents.tycoelectronics.com/commerce/DocumentDelivery/DDEController?Action=srchrtrvDocNm=640454DocType=CDDocLang=EN http://www.gedasymbols.org/user/kai_martin_knaak/footprints/connector/BNC_LAY.fp http://www.gedasymbols.org/footprints/m4lib/BNC_LAY.fp ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
gEDA-user: ngspice 21 plus T-line problem, RHEL
Gang, Having trouble with a very simple netlist that has worked before on other versions of ngspice but not now after updating to version 21plus. At issue is the lossless t-line element. It seems to have no output. See netlist below. Has anyone else had a problem with it? Thanks, Roger Traylor T-line test *input source with 2ns delay, 1nS edges, 20ns pulse width, 41ns cycle time Vin vin 0 1.0 PULSE(0 1.0 2e-9 1nS 1nS 20e-9 41e-9) *source output impedance rsrc vin tline_in 50 *the transmission line, 50 ohm, 2ns electrical length t1 tline_in 0 tline_out 0 z0=50 td=2ns *termaination at end of T-line rload tline_out 0 1000Meg .control op tran 100ps 40ns plot V(tline_in) V(tline_out) xl 1ns 40ns .endc .end ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
Re: gEDA-user: Paying $5 paypal to make these two footprints, easy money
On 01/28/2011 03:16 PM, yamazakir2 wrote: I hate making symbols, anybody want to make some quick money? I'll do it. How many pins do you need on the header/jumper? -- Darryl Gibson N2DIY Linux, free software, for the people, by the people. ___ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
