Not see a port?
ls -lha /dev/ttyUSB*
should return something like, remember to try different USB cables
crw-rw---- 1 root dialout 188, 0 Jun 28 09:12 /dev/ttyUSB0
http://docs.platformio.org/en/latest/faq.html#platformio-udev-rules
#Dependencies
NTPClient platformio lib install 551
pio lib install "ThingSpeak"
pio lib install "Adafruit SHT31 Library"