Your MCU board (Uno etc) and your peripheral device need to be talking to each other at the same rate. Life is much simpler when you use this type of hardware, and they are usually cheaper than an Uno and an ESP-01 WiFi module. I thought I’d try to put together some guidance on how to do this properly.įirst things first though – if you’re using a device such as an Uno, Nano or Mega that doesn’t have built-in internet connectivity then you should seriously consider using other hardware such as the NodeMCU or ESP32 boards.
I’m still seeing frequent posts, mostly from new members of the forum, who are confused about how to add WiFi or Bluetooth connectivity to devices like the Arduino Uno, Nano or Mega, or from people who are trying to use serial communication with some other type of peripheral.
