DASHBOARD-2 nodes.
also required:
(Ubuntu)
sudo apt install speedtest
(there is a -cli version available too.)
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Piccie:
Walk through. 
LED:
blue - ready.
yellow - running test
green - results being shown
red - error
TEST - start the test
HOLD - hold values displayed.
(They are shown for 10 seconds by default.)
WIPE - wipe gauges
TIME - well..... Time of test.
Hope someone likes it.
