Arduino Forum

Using Arduino => General Electronics => Topic started by: Cylindric on Jul 12, 2011, 12:48 pm

Title: Soldering wires to pin-headers - am I just heavy-handed?
Post by: Cylindric on Jul 12, 2011, 12:48 pm
Hello,

I'm using pin headers to solder wires onto, so I can plug them into the headers on my Arduino.  This works quite well, but it's quite easy to heat the pins too much and they move slightly in the PVC strip.  Am I just heavy-handed with the soldering, or is there a better way of doing this?

I am currently planning on switching to using these MTA 4-way cable sockets (http://uk.rs-online.com/web/p/products/5437738/) to plug onto these MTA headers (http://uk.rs-online.com/web/p/products/5355204/) on my own boards.

Doesn't solve the Arduino end of the equation though.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: oscarBravo on Jul 12, 2011, 12:52 pm
I've done something similar by soldering the pin headers into small pieces of stripboard, and soldering the wires onto the other end of the strips. Not pretty, but solves the overheating pin problem and is as solid as I could ask for.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: Cylindric on Jul 12, 2011, 12:54 pm
Good idea.

I might also make my own poor-man's arduino proto-shield by hacking up some stripboard.

I can't find those black header blocks (socket on top, pin on bottom) like are on the Arduino at RS - I'll keep looking as it's probably just a naming problem in my searches.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: JChristensen on Jul 12, 2011, 01:04 pm

I'm using pin headers to solder wires onto, so I can plug them into the headers on my Arduino.  This works quite well, but it's quite easy to heat the pins too much and they move slightly in the PVC strip.  Am I just heavy-handed with the soldering, or is there a better way of doing this?


Have had the same issue, don't think I'm too much of a klutz with the soldering iron.  I'd have thought they'd have been made with something slightly more heat-resistant.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: MarkT on Jul 12, 2011, 03:36 pm
Just solder the headers while they are plugged in to a header socket, they won't move then.  The secret of good soldering is having a hot enough iron and tinning it and the wire and the pin header before soldering - you need fresh flux to be present.  If first attempt fails let everything cool down again before retrying - otherwise you'll cook things.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: copiertalk on Jul 12, 2011, 05:30 pm
I always do that as well.

I always thought it was due to the wrong wire being used or old wire. ( cat5 cable wire or old speaker wire or something ).

And sometimes when I make my boards I am not the most clean person about it if it is a one-off prototype to see if it works prior to soldering/making a finished board for use. There may be a little resist (toner) or finger prints or something left on the surface.

If it is going to a finished product or project I will use the correct buss wire or nice sockets/pins rather than the cheap stuff as well.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: CrossRoads on Jul 12, 2011, 06:57 pm
You guys need to look into terminated wires & crimp connector housings at www.pololu.com.
You can get packages of pre-crimped wires, or just the termations and make your own.

http://www.pololu.com/catalog/category/73
http://www.pololu.com/catalog/product/1907

The make pins are designed to mate with the arduino Uno shield connectors, and also plug into breadboards.
The female pins will accept the male pins, and will also slide onto 0.025" square posts.

Soldering wires onto header pins should only be an act of desperation.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: copiertalk on Jul 12, 2011, 07:06 pm
I do. I have crimpers, pins, sockets and often take a wire harness or ribben cable and repurpose it.  :D

other times I just want to tack it in place for a second to see if my changes have the desired effect prior to going through with making a harness or creating a new pcb.

Unconventional I guess but it works.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: CrossRoads on Jul 12, 2011, 09:10 pm
Were you able to find a source for these?

http://www.pololu.com/catalog/category/50
also available at Digikey, need to look part numbes at home, just received 10 boards worth

Or were you looking for parts with the longer leads?
http://www.sparkfun.com/products/9279
http://www.sparkfun.com/products/9279

bent lead part to use with standard perf board
http://www.sparkfun.com/products/9374

I thought they had these in sets of 4; yup, here they are
http://www.sparkfun.com/products/10007


Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: Cylindric on Jul 12, 2011, 11:59 pm
I found a bunch of UK suppliers now that I know some more names :) more ordering tomorrow...
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: JChristensen on Jul 13, 2011, 12:21 am

Soldering wires onto header pins should only be an act of desperation.


True enough, but we are a desperate bunch!   XD
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: copiertalk on Jul 13, 2011, 02:29 am
Quote
True enough, but we are a desperate bunch!   
(http://copiertalk.com/forum/public/style_emoticons/default/bigthumb.gif)

And sometimes I can spend $5 on a 3 cent part to get it overnight or I can solder cat5 wire to dirty jumper pins for a week and wait on normal shipping. (http://copiertalk.com/forum/public/style_emoticons/default/wiggle.gif)

Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: spycatcher2k on Jul 18, 2011, 12:02 am
I made a small pcb (Pictured is the prototype - I'm getting some made - as always 'FOR SALE'), As you can see in the photo the pins are connected 1 to 1 through a piece of cat5 off-cut I had in my 'BITZ BOX'. The cable is wired the same at both ends on this one for my breadboard. A LOT easier than trying to solder direct to the pins.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: spycatcher2k on Jul 18, 2011, 12:13 am
here is it installed on my sons box :
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: retrolefty on Jul 18, 2011, 12:21 am
Looks like an awful stiff cable with lots of mass for such a short run and small current requirements. I like to use flat ribbon cable split down to the number of conductors required. I long ago obtained a couple hundred feet of surplus 40 conductor rainbow colored ribbon cable and it has served well for such applications.

Lefty

Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: spycatcher2k on Jul 18, 2011, 12:33 am
I use what I have - I'm Unemployed due to Illness at the moment (and will be for at least a year or two) & house bound - so don't have much available cash. I get the occasional repair job in, but thats it. Using up my 'BITZ' a bit to quickly, and getting stuff to strip down has been difficult - normally I would of used a bit of ribbon from an IDE cable, but none left.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: Techone on Jul 18, 2011, 01:29 am
@spycatcher2K

Good idea ! a small homemade PCB with heathers and wires. Thank for the tip. By the way, nice set-up. Me is simply wire and breadboard.
Title: Re: Soldering wires to pin-headers - am I just heavy-handed?
Post by: spycatcher2k on Jul 18, 2011, 02:52 am
Hi all, I've got a few of these header PCBs - Anyone want a set, releasing them as 'swapware' - If you want a set - I'll send them to you FOC - all I ask is for something interesting to swap it with. I will also put up my ATTINY Micro Boards on the same offer (ATTINY 13/2545/85 based board with ICSP header and pins D0 - D4 broken out) - Also got 1 Shiftshield32 board - whats your offer!!!

These are unpopulated boards - no components - if you want components, make me an offer and I'll see what I can do.