Are ports 4 and 10 to still be avoided by encoders?

VEX V5 General Discussion General Forum
#1

There was some discussion last year about ports 4 and 10 not being useable for encoders:

https://vexforum.com/index.php//14392-quadrature-sensor-not-working-when-plugged-in-cortex-port-4/0

I was just wondering if this is still true even with the latest version of RobotC.

#2

I also found this link, which provides some information:

https://vexforum.com/t/optical-quad-encoder-only-reading-1-0-1-and-2/30500/1

#3

If I’m reading (and remember) this correctly the problem is not with ports 4 and 10, it’s when you try to use BOTH 4 and 10 for encoders.

#4

It’s a hardware issue not a RobotC issue.

correct. or for ultrasonic sensor input.

#5

Ok, thanks. I only wish there were some kind of warning label about it, like what they put on cigarettes, or that RobotC, etc. might provide a little flag when you configure it that way.

#6

ROBOTEER GENERAL’S WARNING: Using ports 4 and 10 for encoders and/or ultrasonic sensors causes great anguish and head-scratching, and may complicate your build. ROBOTEER GENERAL’S WARNING: Quitting using ports 4 and 10 simultaneously for ultrasonic and/or encoder input will save great quantities of man hours.

#7