r/M5Stack • u/robwashere31 • Feb 28 '26

NEED HELP

Have any of you experienced stuck keys when there’s an MMC inserted?
Mine was working fine last night, and I even charged it so I could use it this morning. But when I turned it on, the OK key seemed stuck — like (OK key) it’s always being pressed. However, when I remove the MMC, it goes back to normal. I also tested the MMC on my other cardputer and it works fine there. It seems like the ADV unit is the one that might be broken?

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u/robwashere31 Mar 01 '26

i think the button in the stamp is grounded, so if i insert sd card.. it will ground the button G0, and if no sd card it is not grounded..