At the heart of the ESP-01 module is the ESP8266 chip with at least two boot modes — the normal mode and the programming/flash mode. The latter refers to uploading any software (or firmware) to the ...

ESP8266 module (e.g., ESP-01, NodeMCU, or Wemos D1 Mini). USB to Serial adapter (for programming and debugging). Power supply (e.g., USB cable or batteries). Breadboard and jumper wires (if needed).

Despite a wealth of tutorials for setting up and writing code for the ESP8266 WiFi module, there has not been much of anything on programming this cheap wireless module with the Arduino IDE. Finally, ...