For our project we are attempting to use the Vex Line Tracking Sensor’s IR sensor to detect other IR beacons placed around a border. However there is an issue: We can’t trip the sensor. Nothing is working: Remotes, IR lights, even the other Line Tracking Sensor.
What are the specs of the sensor? IE frequency or some other known item that can trip the sensor? Has anyone successfully been able to do this?
Since I really need this as a feature, can we just open up the sensor and put tape over the transmitter? I really don’t see any other way to read IR data because all the connections are proprietary.
Or maybe I have this all wrong. The goal of this was to be able to put IR transmitters around a border on the ground. The robot would autonomously/blindly go around until it got close to the sensor, sense that it’s close to the border, and turn around. We didn’t want to put up large pieces of wood or program a fixed path, we just want it to bounce around inside of the border. Is there another way to accomplish this?
That would work fine if it was on a flat ground surface, but this particular robot doesn’t operate on tile floors, it operates on grass. I know, its weird, but that’s what were trying to do. And were trying to define the border subtly. A nice large white tape I guess could be used, but that’s not subtle at all and detecting it is going to be hard among the grass.
Dig a trench, then use a sonar sensor to detect the depth … sorry - I’m running out of suggestions …
Hmmm… wanna try something really different?
Connect the antenna of a 2nd transmitter to a really long wire. Simply lay that wire out along the boundary you want to detect.
Use the 2nd receiver port to detect that energy (You’ll have to press one of the buttons or joysticks periodically to generate a signal you can recognize in the processor)
Take the 2nd receiver antenna (the yellow wire) and wad it up so it is REAL inefficient. Maybe hang it under the robot. Now the processor will only see that signal when it is close to the long transmitter wire and can react accordingly.
It’ll take some experimenting, but could work if you set it up right. Plus it is easy, portable and cheap. If you can bury the wire - even better.