![]() Now we will configure the HC-05, this is very simple. So for reprogramming the Arduino Uno boot loader we need to set the baud rate of HC-05 at 115200 baud rate. You see that the baud rate at which Arduino Uno boot loader works is at 115200. Arduino boardĪrduino pro or Pro mini (5 V, 16 MHz) w/ atmega328PĪrduino pro or Pro mini (3.3 V, 8 MHz) w/ atmega328PĪrduino pro or Pro mini (5 V, 16 MHz) w/ atmega168Īrduino pro or Pro mini (3.3 V, 8 MHz) w/ atmega168Īrduino Duemilanover or Diecimila w/ Atmega328pĪrduino Duemilanover or Diecimila w/ Atmega168 Some of the boards and their respective baud rates are listed for your quick reference. The baud rate at which the Arduino boot loader gets programmed is different for different boards. When the code is sent to Arduino over Bluetooth (HC-05) it should reprogram the Arduino boot loader. The wireless uploading of a code is known as OTA ( Over the air) upload. Uploading the code to microcontroller without cable is generally done in the case of small microcontrollers which does not have a UART connection or in case of microcontrollers which are fixed on a PCB. In order to perform this task we will undergo the following steps: We are not using cable connected to the laptop and Arduino to upload the code instead of using cable we are using HC05 module to upload code to the Arduino. So, In this tutorial, we will learn something interesting we will upload code to Arduino through Bluetooth module. In situations like these Arduino OTA programming can be a blessing. Opening the Car Dashboard or the machine cabinet may take a lot of time. Like for example inside the Car Dashboard, inside the machine cabinet etc, and you need to make some changes to update the code. OTA programming can be quite handy and can save you much time in situations when your Arduino is installed in locations where you have no access. It has limitations you will need to connect the Arduino with the laptop or computer to upload the code. Interfacing the Arduino with HC-05 Bluetooth module:Īrduino OTA, Uploading code to Arduino through Bluetooth:Īrduino OTA Over The Air Programming using Bluetooth– The easiest method that you are quite familiar with, is uploading the code using a USB Cable.Configuring the HC-05 Bluetooth Module:. ![]() Arduino OTA, Uploading code to Arduino through Bluetooth:.
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