Reading ARROW BOARD COMMUNICATION FAIL>

I connected with MAX485 module and tried to read but failed.

Possible1. RE DE pin not controlled and does only Driver Enable mode. ( sending mode.)

so not working .. and stops Arrowboard communication as well.

Possible2. too many 120 ohm cross resistor.  may three 120 ohm resistor on board. and controller. and my reading max485 module. so too many cross resistor.

Instead to read module. directly

using TX--> RX line check pull up so 5.0v and 

common the Ground with two module.

I can see TX led flashing so incomming data. and Osilloscope showoing 5v to 0v clean digital signal comming and beacon switch also working and can see through Osilloscope change pattern of signal clear but can not read by Arduino rx Sereal read.

I also change the baud rate from4800 to 19200 but still same not even broken word came up.

maybe PIC controller have total different setup to communicate.

found there are PIC microcontroller programmer called MPLAB X IDE

Mayneed to learn how to . but looks simullar old time of AVR programmer.

and price like this 

but in EASY EDA is almost of PIC controller is out of stock..

and looks need to install compiler and programmer. and may need to buy usb programmer to program this.

but problem is how to solder this smd chips....

price on alibaba .17 JULY 20