Tutorial on soldering with perfboard  

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mday
 mday
(@mday)
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Joined: 5 months ago
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2019-10-13 11:25 pm  

I would really appreciate a tutorial video on using perfboards for assembling circuits.  Any tips and tricks for soldering, arranging wires, etc., would be great.  Or would wire wrapping be a better approach?  Designing and ordering a PCB seems like overkill for a simple one-of-a-kind project.

I was working on a simple project with a NodeMCU an an I2C sensor.  I just needed to solder four wires between the two.  The 0.1 inch spacing between pins was a bit too tight to easily loop a 22 gauge wire around one pin without risking it touching an adjacent pin.  Trying to butt a wire up against a pin was quite challenging when I also needed both hands for soldering.  I think part of my problem was that the board I was using was just wide enough for the NodeMCU, with no holes outside of the pins; a wider board would have let me run a wire outside next to the desired pin, and create a solder bridge between the wire and pin.


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casey
(@casey)
Estimable Member
Joined: 5 months ago
Posts: 191
2019-10-14 12:57 am  
Posted by: @mday

I would really appreciate a tutorial video on using perfboards for assembling circuits.

 Trying to butt a wire up against a pin was quite challenging when I also needed both hands for soldering.

Practice, practice and more practice.  When I first started I soldered many a circuit board project until I was able to time it just right.  Like learning to bronze or weld you get a feel for it. Like a cook can tell if the temperature is right or the food needs turning.

One hint might be to add solder to the pin and then add solder to the wire. Then hold the wire to the pin and apply some heat until they melt together.

If there is more than one strand of copper in the wire twist it between two fingers and then add some solder.

Probably shouldn't breath the smoke so a light breeze blowing away from your face helps.

No doubt there are many tutorials on the internet these days.

This post was modified 1 month ago 3 times by casey

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Pakabol
(@pakabol)
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2019-10-14 3:08 am  

soldering paste and a heat gun is always nice you can do small joint and large ones 


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Robo Pi
(@robo-pi)
Prominent Member
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2019-10-14 3:14 am  
Posted by: @mday

Trying to butt a wire up against a pin was quite challenging when I also needed both hands for soldering.

Here's a tip for freeing up a hand.   If you are soldering a wire to a pin, first tin the pin, then tin the wire.  Finally put the solder down and hold the tinned wire up against the tinned pin and just heat them up.  The existing solder will flow together and you'll be done.

DroneBot Workshop Robotics Engineer
James


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Cap Electronics
(@cap-electronics)
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Joined: 2 months ago
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2019-10-14 12:41 pm  

T

Posted by: @mday

The 0.1 inch spacing between pins was a bit too tight to easily loop a 22 gauge wire around one pin without risking it touching an adjacent pin.  Trying to butt a wire up against a pin was quite challenging when I also needed both hands for soldering.  

 you need helping hands or a PCB holder to help you trust me it makes life so so much easier. It might be a good idea to solder the module to a small piece of perf board and then solder wires to the perf board that way you might be able to get around the 0.1 inch spacing problem especially if you solder the wires directly to the pads or strips (copper) of the perf board and practice practice and once more practice.

 


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rickstheman
(@rickstheman)
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2019-10-14 4:26 pm  

Any tips on soldering male connectors for the gear motors to the Power Distribution perfboard? Trying to use yueton 3.5mm male banana pug bullet connector. 

Rick


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DroneBot Workshop
(@dronebot-workshop)
Workshop Guru Admin
Joined: 5 months ago
Posts: 303
2019-10-28 1:59 pm  

@rickstheman

What I did for the motor connectors on my power distribution board was to drill holes in the board the same size as the connectors, so they would have a tight fit.

I then used some epoxy on the top side around the connector, to secure it to the perfboard. You need to be sure not to get any on the connector itself!  I waited for the epoxy to dry and then it was pretty easy to solder to the connectors on the underside of the board.

Not sure if it applies to your situation but I thought I'd put it out there.

🙂

Bill

"Never trust a computer you can’t throw out a window." — Steve Wozniak


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