Raspberry Pi 5 uses PCIe hat/dual hat | Seeed Studio Wiki

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Raspberry Pi 5 uses PCIe hat/dual hat | Seeed Studio Wiki

This tutorial mainly introduces the hardware connection configuration of M.2 Hat and dual Hat and how to make the Raspberry Pi boot from the SSD.

https://wiki.seeedstudio.com/raspberry_pi_5_uses_pcie_hat_dual_hat/

[ShojiMiyanishi]

Why size of screws are not noted?
I want to know when attach more expansion board.
M3 , M2.5 or inch pitch.

[LJ-Hao]

Here is the size of screws.

[ShojiMiyanishi]

I wanted to know about the screws used to stack HAT. This is because the nut is fixed to the board and cannot be replaced. I already bought it and know that it can be fixed with M2.6. M2.5 might also be good. However, this is information that should be provided by the supplier.

[ShojiMiyanishi]

I forgot to thank you. However, your information is about the screws that fix the SSD, which is not what I was looking for. Also, it is provided by the manufacturer, so there is no need for me to prepare it.

[LJ-Hao]

Here you are:

[panyajan]

After boot error pcie unable to charge power state from D3cold to D0 device inaccessible

[LJ-Hao]

Please make sure Hat's pogo pin connect with Pi5 GPIO pad.

[ShojiMiyanishi]

I think that the 5V is taken from the pogo pins to create the voltage used by the SSD board so that this board does not become unstable even if the 3V current that the Pi5 can supply is insufficient. Therefore, I think that it will not work unless the pogo pins are firmly in contact with the Pi5. It is better to tighten the screws firmly. However, since it is a plastic screw, it is moderate.