Our friends at @adafruit have a great explanation of #MQTT. They showcase it using the SIM800L modem on their FONA board w/ adafruit.io. That 2G modem is less common in the US, but our SIM card enables 300+ carriers, including 2G carriers around the worldhttps://t.co/JM0Q0bUktc http://pic.twitter.com/CzAyOtyKTR
— Hologram (@Hologram_io) January 3, 2018
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