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Connector choice for STM32 based robot controller using an STM32F4 series board

loveforcircuits
Associate III

I am working on an STM32 based robot controller using an STM32F4 series board. The system includes IMU, encoders, and multiple sensor modules. During vibration and movement, some jumper connections become unreliable. I am currently using standard Dupont wires for prototyping. However, repeated disconnects are causing unstable sensor readings. I want to move to more robust connector solutions for PCB to wire interfaces.
I am confused about which connector types are best for pin based headers. Should I use JST, Molex, or locking header connectors instead of Dupont? What connector systems are commonly used in STM32 embedded designs?
I also need something suitable for frequent assembly and maintenance.

1 ACCEPTED SOLUTION

Accepted Solutions
Andrew Neil
Super User

Indeed, the so-called "dupont"-style flying leads are notoriously unreliable!

I suspect that most things sold as "dupont" are not actually made by DuPont...

 


@loveforcircuits wrote:

What connector systems are commonly used in STM32 embedded designs?


This really has nothing specifically to do with STM32 - it's just standard design for any electrical connections.

I suggest you look at what is used in similar commercial designs.

Try searching distributor catalogues for connectors designed for high-vibration environments.

You probably want connectors with some sort of latching mechanism.

Yes, JST & Molex are well-known manufacturers with wide ranges of connector products - I'm sure they will have something.

 

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

View solution in original post

2 REPLIES 2
Andrew Neil
Super User

Indeed, the so-called "dupont"-style flying leads are notoriously unreliable!

I suspect that most things sold as "dupont" are not actually made by DuPont...

 


@loveforcircuits wrote:

What connector systems are commonly used in STM32 embedded designs?


This really has nothing specifically to do with STM32 - it's just standard design for any electrical connections.

I suggest you look at what is used in similar commercial designs.

Try searching distributor catalogues for connectors designed for high-vibration environments.

You probably want connectors with some sort of latching mechanism.

Yes, JST & Molex are well-known manufacturers with wide ranges of connector products - I'm sure they will have something.

 

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
Hal3
Associate III

JB Weld applied where the wires enter the back of the connector works well to keep individual wires from backing out. Just remember,  JB weld is permanent.