JST XH 插座保护套

JST XH socket covers / dust caps / plugs

2024-03-18 01:30:23

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Summary

I designed a circuit board to support multiple devices with different peripherals, so the JST XH socket connectors on the board won't all be used for any one device. These covers insert into the unused sockets to encourage making the correct connections.

The longer “x-axis" walls (length varies with number of pins) are designed for a 0.1mm total interference against the walls of the socket while the “y-axis” (constant length) walls have 0.1mm total interference against the outer pins of the socket. The top cover has a slight overhang to facilitate removal.

I used a 0.25mm nozzle on my Prusa MK4 and natural/transparent PLA, so the STL files uploaded here have 0.5mm walls. You can put a different nozzle size into the spreadsheet of the FreeCAD file and see what happens. It looks like a standard 0.4mm nozzle could work, but beyond that one of the long walls will probably hit the pins.

You can also adjust clearance, insert length, and other parameters in the spreadsheet within the FreeCAD file if you want. I hard-coded the B2B, B3B, and B4B JST XH sizes I needed, but then I went back and added a variable one where you can just put in the number of pins and it should be able to calculate the dimensions.

Print Settings

Printer brand:
Prusa
Printer:
i3 MK4
Rafts:
No
Supports:
No
Resolution:
0.12
Infill:
n.a.
Filament brand:
MakerGeeks
Filament color:
natural/transpaent
Filament material:
PLA
Notes:
I used a 0.25mm nozzle. If you have only 0.4mm, you can try adjusting the FreeCAD file's spreadsheet, but I haven't tried that. Layer resolution doesn't actually matter too much. I used a variable height to get it to hit the 0.5mm cap I asked for.

(Yes, bizarrely, in 2024, I found an ancient but unopened spool of MakerGeeks PLA. I did not expect it to print reliably, but it did.)