I tried to do a data backup from my emonPi today, but it failed saying there was no space left:
Which is fair enough since it is a 16GB card with several years of accumulated data on it.
The last backup I did was back in Aug '19 and the compressed file was 60MB is size.
I have a new 64GB card to replace the old one, but is there a way to copy the old SD card onto the new one
so I can then safely backup my data.
I’m also probably a couple of years behind the latest EmonSD version, so I guess I should also upgrade to the latest.
Can anyone give me some pointers, or a link to a guide?