Electronic – How to solder micro stepper motor pins

solderingstepper motor

I have a hobby project where I would like to use micro stepper motors as shown in the picture below. However, as you might be able to see, the spacing between the pins is incredibly tiny and each pin is much narrower than the 24 AWG wire I was planning on using. In addition, each pin seems to have a single strand of copper wire attached to it presumably attached to the stepper windings.

So my question to us all … what technique might one use to attach wires to these pins? Assume poor/average soldering skills and "normal" mans hands with normal steadyness (and by that I mean (what I hope are) the normal amount of shakes).

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Here is a photo I took myself which shows the scale against a rule.

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Best Answer

I would probably use a small amount of tacky flux and pre-tin both the wire and the pins.

If you can secure the motor in a clamp with pins facing horizontally, that would be ideal for me (an average solderer).

I would feed the wire with my non dominant hand while resting my palm on the bench top and soldering with my dominant hand.

Hope that makes sense. Pre-tinning will make it relatively easy.

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