I can't understand how to connect my arduino pro mini,https://www.amazon.in/gp/product/B071ZCHW5P/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
There is a guide to connect them given here : http://www.instructables.com/id/Bluetooth-Serial-Adapter-for-Pro-Mini/
And this is the given circuit:
I am trying to follow this guide but it is for 5V version and involves shorting the diode on the pro mini plus a divider circuit.
Apparently, there is an obvious difference in the circuit according to my components.
Please help me connect them correctly. I am new to this and stuck at this.