VEX LIMIT SWITCH PNG INSTALL
VEX LIMIT SWITCH PNG SERIES

If you did, youвЂ™d probably have to replace this sensor at the end of every match. You donвЂ™t want to put this sensor in a place where it can get entangled with other robots or on a robot appendage that will hit things hard.

Like the bumper switch, the limit switch is also easy to use and quite reliable, but fragile (otherwise known as вЂњflimsyвЂќ).

When the little metal lever is up, as in the photo at left, it returns a value of 1 when the little metal lever is depressed, it gives a value of 0. The limit switch is also a digital sensor (returning 1 or 0) and acts very similarly to the bump switch. So the easењњ equivalents to the conditional statements above are: If SensorValue = 0, do this. RobotC makes things more convenient and converts вЂњpressedвЂќ into 1 and not-pressed into 0 easењњ does not do this conversion for you. When the port is empty or has a switch that is not pressed, it returns a value of HIGH and when the sensor *is* pressed, it acts as a circuit break, returning a value of LOW. It stems from the way input ports work (which operate the same way regardless of programming language). My brain would love for this to work like RobotC, but in this case easењњ users must train their minds to do a flip-flop. When the sensor is NOT pressed, it returns a value of 1 when it IS pressed, it returns a value of 0 (zero). Sensor Output: easењњД®asењњ users take note:В Easењњ programming with VEX digital switches requires a little bit of backward thinking. ItвЂ™s pretty straightforward and great for programmers just starting to use sensors. To program a robot using a bump sensor, one usually has a conditional statement, followed by some instructions: If sensorValue = 1, do this. When the button is pressed, the sensor returns a value of 1 when itвЂ™s not pressed, it gives a value of 0. Triggering it requires a reasonable amount of force, so donвЂ™t plan to use this for a movement that will lightly touch or graze its target object (see next for limit switches to do that). This item is screwed onto one part of the robot (often some part of the chassis) and when you hit something (like the field perimeter or a fixed field object) it says вЂњAha!вЂќ

It falls into the category of вЂњdigital sensors,вЂќ meaning that it returns only two possible values: 1 or 0 (and must be plugged into one of the cortex вЂњdigitalвЂќ ports).

VEX LIMIT SWITCH PNG INSTALL

The bumper switchВ is a pretty basic in addition to being reliable and durable, it is easy to install and use.

VEX LIMIT SWITCH PNG SERIES

The aim of this series is to help teams that are new to using sensors have an idea of what is available, and what they might like to use on their own robots. This is the first of a series of posts that examines each VEX sensor.

Vex limit switch png