Pin contact to CN11 / CN12 of Nucleo boards

[LysAn]

Dear people,

I use these little square pins and headers (see image), to obtain access to the contacts of CN11 / CN12 of Nucleo Boards, e.g. H723ZG, or F756ZG?. However these are impractical, because movement or vibration might lead to interruptions. And I want to avoid soldering, for specific reasons.

Ideally would be some sort of connector that makes good electrical contact and can be coupled/decoupled easily. Can someone suggest an efficient and ergonomic solution?

Thank you

[Andrew Neil]

Those positions are designed for soldering standard pin headers - so soldering would seem the obvious solution.

[TDK]

Press fit header pins exist. I'd use those, and break off 1-2 pins as needed.

https://www.adafruit.com/product/5938

[Andrew Neil]

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@LysAn wrote:

I want to avoid soldering, for specific reasons.

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To give relevant suggestions, It would help to explain what those reasons are

Have you considered "pogo" pins?

https://thepihut.com/products/pogo-pins-needle-head-10-pack

https://thepihut.com/products/pogo-pins-spear-head-10-pack

[Gyessine]

Hello @LysAn 
Most of the ST morpho pins are also connected to Arduino® UNO R3 connector pins.
Check the product datasheet and schematics (ex: nucleo-H723 schematics MB1364) to determine if the peripheral you are using is linked to a pin that also has an Arduino pin, as these pins are more compatible with the type of wire you are using.

if not, you can consider @TDK and @Andrew Neil proposed solutions
BR
Gyessine

[LysAn]

Thank you all for your suggestions. They pins I am looking for are specifically those for the external power supply. I am aware, that for the signal pins, the Arduino shield can be used. I wish the Arduino shield had a convenient access point for supplying the STM32 with power.

Best regards

[Andrew Neil]

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@LysAn wrote:

I wish the Arduino shield had a convenient access point for supplying the STM32 with power.

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You have the 3V3 and 5V pins on the Arduino headers.

Still unclear why soldering is unacceptable?

[LysAn]

Yes, but the 3V3 and 5V pins on the Arduino headers are for powering external periphery, right? And I want to power the μCU via the external 5V. These pins on the CN11 are a bit clumsy to solder there, the tin somehow doesn't attach well there and the pins are almost touching each other. It is not so ergonomic. 

[TDK]

Those are holes for standard 0.1" header pins. That's easily the best connector to use as they're the most common way to connect generic boards together.

If solder isn't sticking, use a flux pen. It gets easier with experience and better tools.