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Nerdseq resets when inseting a SD Card - Printable Version

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Nerdseq resets when inseting a SD Card - XORadmin - 11-08-2017

When inserting a SD Card while the Nerdseq is turned on, the Nerdseq software resets.
So be sure that you never replace a SD card while running or before saving your project.

Subject to be fixed


RE: Nerdseq resets when inseting a SD Card - XORadmin - 01-15-2018

I think i found the problem after hours of debugging the source for the FAT library and the CPU internals.
In the end, it is not software related. Most SD Cards draw a high current when being plugged in and so the voltage drops for short peaks which causes the CPU to reset. And this happens in the circuit, even though it is designed by all the needed specifications.

So this can only be fixed by adding a additional capacitor which i will do with all new orders. I am not encouraging to add the capacitor by yourself as it could damage your nerdseq if you are not carefull.

* EDIT * It's been reported that it can depend on the type of SD Card. Some consume much higher peak values then others. So you might be lucky with some SAN cards, but still, Hotplug is not supported anyway.