Reading https://assets.sharpnecdisplays.us/docu ... _guide.pdf, that display has a Compute Module (CM) slot built in, not a Pi3.
By the looks of it you have to use a CM with built in eMMC, not an external SD card. You therefore have to program it using USB.
The current Bookworm image should run fine on a CM. The "Read-only file system" would imply that something hasn't flashed correctly. I also note from that setup guide that they are referencing Jessie and the desktop version not fitting on the 4GB eMMC device. CM3 also came in a range of eMMC capacities, but running out of space would potentially result in weird error messages.
Another suggestion would be to flash the CM3 in a CMIO board and confirm it works there. It should then just plug into the NEC display and work.
By the looks of it you have to use a CM with built in eMMC, not an external SD card. You therefore have to program it using USB.
The current Bookworm image should run fine on a CM. The "Read-only file system" would imply that something hasn't flashed correctly. I also note from that setup guide that they are referencing Jessie and the desktop version not fitting on the 4GB eMMC device. CM3 also came in a range of eMMC capacities, but running out of space would potentially result in weird error messages.
Another suggestion would be to flash the CM3 in a CMIO board and confirm it works there. It should then just plug into the NEC display and work.
Statistics: Posted by 6by9 — Thu Aug 21, 2025 5:11 pm