LM YN Xbee sensor expansion board V5 with BLUEBEE RS485 Bluetooth interface For Arduino

so a while ago I picked up one of these RN 42 Bluetooth modules and you know it's at around in my parts been for a while and finally I sat down a few days ago and decided I'm going to figure out how to work with this thing so what we've got here is the RN 42 with a standalone Arduino so this is just an atmega328 IC chip in a breadboard mounted in a way that and configured in a way that you can use the arduino ide to program this so i came into this project with three goals number one i wanted to be able to wirelessly send and receive data via a via bluetooth but also be able to do it from a PC or Mac using the Arduino IDE serial monitor window so if I open up that window I wanted to be able to type in hello world that would be sent over via bluetooth and it would be received by the Arduino and vice versa so I could also read data from the Arduino and that's exactly what this simple circ