What do you need to program the bluetooth module HC-05?

Question

Programming

Judging by the video tutorials, do you need an arduino, or something else? Will any model fit? Program the module on Arduino and can be used separately without the board itself?

Answer 1

To change the firmware of the module itself, see the article .
In order to use the module for its intended purpose (Bluetooth-USART converter), programming is not required.

Answer 2

in general, the question has already been answered, the only thing this module is not quite suitable for the task you set, it is large and consumes a lot of energy in transmission mode, it is not suitable for a bracelet at all.