1.HC-05/HC-06 Bluetooth module with breakout board.
2.USB to TTL converter : I used PL2303HX usb to ttl converter. Any other usb to ttl converter will do too./Arduino board, arduino uno used in this tutorial, other boards should work to.
3. Arduino IDE/ Tera Term : It can be downloaded from here or if you don't want to download arduino then download Tera Term from here.