go_away

Author Topic: Technique for soldering parallel power bus  (Read 710 times)

0 Members and 1 Guest are viewing this topic.

Offline ErikYTopic starter

  • Robot Overlord
  • ****
  • Posts: 186
  • Helpful? 0
Technique for soldering parallel power bus
« on: June 11, 2012, 04:28:11 AM »
Please once again forgive my newbie questions.

I searched on the web and could not find anything very helpful on this.

I am working on the $50 robot, and trying to connect the breakaway pins to my PCB in parallel for the power busses.

Is there a good technique for doing this? I tried heating between the pins and applying solder but ended up with very ugly blobs of solder and not nice connections like in the tutorial pics.

Any suggestions would be helpful, thanks!

Offline jkerns

  • Robot Overlord
  • ****
  • Posts: 251
  • Helpful? 12
Re: Technique for soldering parallel power bus
« Reply #1 on: June 11, 2012, 10:27:41 AM »
Solder the end of a wire across the two pins and clip the excess when you are done?
I get paid to play with robots - can't beat that with a stick.

http://www.ltu.edu/engineering/mechanical/bachelor-science-robotics-engineering.asp

Offline ErikYTopic starter

  • Robot Overlord
  • ****
  • Posts: 186
  • Helpful? 0
Re: Technique for soldering parallel power bus
« Reply #2 on: June 11, 2012, 11:11:48 AM »
Thanks, that would certainly work, and I may end up doing that, but I got the impression that Admin was doing something different in this pic:

http://www.societyofrobots.com/images/sbs_connect1_large.JPG

It looked to me like he was just applying solder directly between the two pins, which I tried and could not get to work.

Thanks.

Offline rbtying

  • Supreme Robot
  • *****
  • Posts: 452
  • Helpful? 31
Re: Technique for soldering parallel power bus
« Reply #3 on: June 11, 2012, 11:42:54 AM »
With a good soldering iron and a wide tip, it's possible to bridge the connections without a wire to wick the solder across. You need to make sure that both pins are heated equally, and that the solder flows between them to form the joint. With some practice, you should be able to get the hang of it, though it gets rather difficult when working with 3+ pins.

Seeing as you've got plenty of spare component leads, however, there's really no reason to spend that kind of effort.

Offline Soeren

  • Supreme Robot
  • *****
  • Posts: 4,672
  • Helpful? 227
  • Mind Reading: 0.0
Re: Technique for soldering parallel power bus
« Reply #4 on: June 23, 2012, 08:53:06 PM »
Hi,

With a good soldering iron and a wide tip, it's possible to bridge the connections without a wire to wick the solder across. []
It's not the flow of solder that's the main problem with this method.
During use, the board will flex (if ever so little at a time) and either the pad breaks away or, more likely, the solder breaks - while solder may seem soft, it's not good at resisting vibrations.

A wire (used solder wick is good for power traces) is flexible in quite another league.
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

 


Get Your Ad Here

data_list