Wireless programming or OTA (Over the Air) Programming can be done easily in ESP8266 and ESP32 as they have Wi-Fi support inbuilt on board. But in Arduino, we have to use the Bluetooth module to ...

Bluetooth Serial Communication With Arduino Instructions on how to control an Arduino through bluetooth NOTE: Disconnect the TX and RX pins of the bluetooth module when you are uploading the code.

In this DIY session we are building a circuit to program the Arduino wirelessly using Bluetooth module HC-05. Here we are using an HC05 Bluetooth module to do this.

Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.