Using two different mailboxes, Bluetooth and NXT

Tue, 30 Nov 1999 00:11:00 EST

Hello Roborelm help forum,

I've built myself a self balancing robot with NXT and I've mounted an IP camera on it. I'm trying to use TWO mailboxes to send two different driving commands via BT. Ultimately, I want to tell my robot two pieces of information.

1. How far away an object is (using the CoG Box Size)
2. Which way to turn using CoG_X

I want to send the value of both of these variables to my robot using two different mailboxes.

To simulate this working, I've built a very basic RoboRelm program and NXC program containing only the BT communication (without a video feed) - but it works unexpectedly:

I can only get data from one mailbox and not the other.

I'm sending the number 8 to mailbox #1 and sending the number 20 to mailbox #2. My program only shows number 8 and receives zero at mailbox #2.

Attached are my NXC and RoboRelm programs.

I've also tried putting some Timers in to make the program wait a while before reading the next mailbox in RoboRelm but they also don't seem to work...

Hoping someone can help me.

Cheers,

Jay

RoboRealm Forum

Using two different mailboxes, Bluetooth and NXT