Turn Any Microcontroller Into an IoT Device
Getting most microcontrollers onto the internet means adding more hardware. An ESP32 can connect to Wi-Fi networks right out of the box, but what about an 8-bit chip like the ATtiny85? A Wi-Fi module might be able to handle the network connection, and services like Adafruit IO, Blynk, or Particle provide the infrastructure needed to access the device remotely. That works well enough, but it could be overkill if all you really want to do is read a sensor for a personal project.
Adam Kumpf developed another option called Upline. It is an open source serial protocol designed to let just about any microcontroller communicate with a computer using simple commands. Combined with Kumpf's Seamside software, that serial connection can ultimately make a device accessible through a URL without wiring a radio into the circuit or using a third-party IoT service.
Upline is extremely lightweight. A complete implementation on an...
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