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Published 20 hours ago • verified publisher icon damellis

Make footprints easier to hand solder

Open andershedberg opened this issue 11 years ago • 2 comments

Hi, Sparkfun ( or Lady Ada ? ) has some extra long footprints oin their Eagle libraries for some surface mount components that make them easier to solder by hand.

Here are the components I struggled with (that could be made longer): Diode D1. Capacitors of 1000uF.

Others that might not be possible to get bigger but would benefit from longer pads if possible on at least the important connected pins. Module M10 Mega 1284. SIM card holder (as the plastic is in the way for one pad if using a big soldering tip)

The following components was very hard to solder, almost impossible with my 50 watt soldering iron, due to the groundplane design with large copper areas and vias. Pre-heating the board usually helps a lot as adviced from a firend, but if it is possible to change the ground plane design it would also help:

Module M10 "power corner" Charger circuit components.

Fun projects though!

andershedberg avatar Jun 08 '13 14:06 andershedberg

Thanks for the feedback! When I revise the board next I'll see about incorporating these suggestions.

BTW, did you order all the parts / circuit board yourself? Or was this part of a workshop or similar?

damellis avatar Jun 08 '13 15:06 damellis

Hi, I participated in the pre/test workshop done by Tricia and David at Stpln in Malmö, Sweden last weekend. Here are some info from Tricia http://wpmu.mah.se/m11p0636/ It took something like 15 hours to assemble the thing into a working condition.

They ordered most parts from Farnell and the displays from two swedish shops (http://www.lawicel-shop.se/ and https://www.electrokit.com/en/) but had some problems finding the exact parts. (keys have different footprints, and the M0 screws can't be found at all here)

/Anders H. Ps. Since you showed how to use the ATMega1284 I'm currently trying to get it to replace the ATMega328p in my own sensor GSM unit as I hit some not so fun memory limits. Ds.

On Sat, Jun 8, 2013 at 5:21 PM, David A. Mellis [email protected]:

Thanks for the feedback! When I revise the board next I'll see about incorporating these suggestions.

BTW, did you order all the parts / circuit board yourself? Or was this part of a workshop or similar?

— Reply to this email directly or view it on GitHubhttps://github.com/damellis/cellphone2hw/issues/18#issuecomment-19150277 .

Anders Hedberg, mobile +46 733 320 196

andershedberg avatar Jun 08 '13 16:06 andershedberg