Document replacement of Rasperry Pi on Mark II

In the ‘welcome’ docs, under hardware features it states: Replaceable Raspberry Pi - upgrade to 4gb or 8gb if you swap out the raspberry pi.

No indications anywhere I can find on how this is to be accomplished, let alone any instructions on how to crack the case.

I obviously don’t want to jackhammer it open.

I hope that this kind of information is in the pipeline.

There are two phillips head screws on the front. You made me curious, so I popped them. It seems a #0 phillips screwdriver is all you will need to get yourself into trouble :laughing:

-Mike Mac

P.S. Glad to see they are phillips under the heading of open hardware!

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Yikes! Yeah - I can certainly see that RPi board replacement is possible, but do I dare at this juncture? I guess I’ll see if I run up against the memory limit first.

Thanks!

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Hey, this sounds like a good bit of documentation we should have.

Though agree, it sounds like a good idea to wait and see if this is really a limitation you need to overcome first.

As Mike said, it’s very easy to get in there and we’ve intentionally designed the Mark II to make it easy to hack on, repair, or extend.

The SJ201 daughter audio board connects via the 40 pin connector which also provides power to the Pi. The display and camera both use the standard Raspberry Pi DSI connections.

One thing to note - depending on how old your Raspberry Pi is and where it was sourced, you might need to update the firmware on it first. At the very least, the older firmware didn’t support USB boot, and even some Pi’s that we received this year were running older versions of the firmware.

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I dug into mine and had it disassembled to the point the Pi was replaceable in about 15 minutes. All #1 (maybe some #0?) Phillips screws, but the one challenge for me was digging a fixed shaft screwdriver out of my toolbox because my iFixIt one wouldn’t reach a couple of screws.

Getting the screws back into the holes was trickier, but a good magnetic screwdriver or some tweezers should be all you need there.

Any gotchas after the Pi replacement?

I didn’t actually replace the Pi, but when I booted my Dinkum drive in a dev kit, I was prompted with pairing again. Not sure if this is some Pantacor/Selene check for a changed hardware ID or just a coincidence. Should be an easy replacement as long as you’re swapping in a Pi 4 with a new enough bootloader to support USB boot (you can always update the bootloader before installation).