$ /opt/vc/bin/vcgencmd measure_temp temp=40.1'C
ha:node_red_flows1
https://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html
https://www.reeve.com/Documents/Articles%20Papers/Reeve_GpsNtp-Pi.pdf
https://gpsd.gitlab.io/gpsd/gpsd-time-service-howto.html