How to Send Data to and fro with Arduino Uno

How about your Arduino communicating with a computer? If you look at the Arduino UNO you can see there is a Tx and Rx pin on digital pin 1 and 0. You can use them while you are running your program for output and input. When you call the serial functions in the Arduino programming language you are basically using

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How to Avoid Hard Coding on ESP8266 with WifiManager Library

If your sketches have the credentials hard-coded in and if you get a new router or want to bring your device to a different Wi-Fi network you’re going to need to reprogram it. The need of reprogramming will make your sketches less shareable. You’ll probably want to replace your credentials with placeholders before you upload it anywhere and anybody using

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