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dcpedit / redherring

Red Herring Keyboard PCB and case files
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Hotswap support for Mill-Max socket #9

Closed saikocat closed 1 year ago

saikocat commented 2 years ago

It seems like the current PCB mounting hole diameter is only 1.47mm, which I think make it near impossible to insert the Mill-Max hotswap socket due to the same thickness without accounting for drilling tolerance/error.

Like for example the 0305 has the follow specs:

EDIT: Is the reason due to the switch being raised higher (than sitting flushed) causing issue with the acrylic layers?

Is there any plan to support this? Or strictly pure soldered board only? Thanks!

dcpedit commented 2 years ago

The current design actually does support mill-max sockets. I've built a few boards with them and sockets drop right into the hole with no issue. As you can see in this photo, the bottom pcb has the sockets installed: https://imgur.com/8ku5P5I

On Tue, Sep 13, 2022 at 3:03 AM Duc Hoa, Nguyen @.***> wrote:

It seems like the current PCB mounting hole diameter is only 1.47mm, which I think make it near impossible to insert the Mill-Max hotswap socket due to the same thickness without accounting for drilling tolerance/error.

Like for example the 0305 has the follow specs:

  • Diameter: 1.47 mm
  • Recommended PCB mounting hole diameter: 1.50-1.55 mm
  • Flange thickness: 0.64 mm
  • Flange diameter: 1.93 mm

Is there any plan to support this? Or strictly pure soldered board only? Thanks!

— Reply to this email directly, view it on GitHub https://github.com/dcpedit/redherring/issues/9, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAGDRISBYNV6DXV2G4HNLBLV6BGPXANCNFSM6AAAAAAQLIYYBU . You are receiving this because you are subscribed to this thread.Message ID: @.***>

saikocat commented 2 years ago

Thank you for the reply. I've experienced that 1.5mm to be snug-fit, in rare cases failure to push through. I guess this is highly depending on the PCB manufacturer tolerance.

The specs https://www.mill-max.com/products/receptacle/0305 also suggests the mounting hole to a bit larger (though its diameter is exactly the same as your footprint hole at 1.47mm).

This could be a confirmation bias thing from our experiences. But if it works for majority of the people building the board then we can just close this issue.

JellyTitan commented 2 years ago

The 0305's worked for me on boards made by jlcpcb. Perhaps these should be added to BOM as optional? Please don't make me count the holes . . .

dcpedit commented 1 year ago

PR #11 which adds hotswap sockets to the PCB has been merged.