@Masterchief24 A) Does the LCD screen still connect to the V5 cortex
B) I need to make a program for the LCD screen that when the robot is on it will display the batteries power level and temperature until the robot is turned off and will update itself when the battery temp and level changes. how can i make that or can someone make it for me?
C) How do i connect a Vex LCD screen to a Vex EDR arms cortex?
A) No, because the V5 Robot Brain doesn't have any UART serial ports.
B) There are some commands listed in the V5 System Architecture page (https://www.vexrobotics.com/v5-architecture.html ) in the Brain Performance Section on the Vex Robotics website that can probably help you. You'll probably figure out a way to incorporate it from there. Some examples include:
when( BRAIN.LCD.PRESSED )
If you still don't know how to incorporate it, try to wait for some tutorials on youtube that can effectively explain it or maybe someone more knowledgeable in that aspect may jump in this thread.
C) Buy a serial Y-Cable and connect the two ends to the LCD Display, and the other single end to one of the UART serial ports on the cortex.