matsa / nr-rpi-control Goto Github PK

I have an 128GB SSD connected to my RPI 3B and only 3% is used, but i see that your flow reports 22%.
Here is df -h on my system:
Filesystem Size Used Avail Use% Mounted on
/dev/root 118G 3.3G 109G 3% /
devtmpfs 456M 0 456M 0% /dev
tmpfs 489M 0 489M 0% /dev/shm
tmpfs 489M 6.5M 482M 2% /run
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 489M 0 489M 0% /sys/fs/cgroup
/dev/sda1 253M 54M 199M 22% /boot
tmpfs 98M 0 98M 0% /run/user/1000

As i am new to node-red / java, i am not sure how to change your function to show the correct value.
I had a look at the node-red forum, and the other flow that is posted has the same function as what you have.