> For the complete documentation index, see [llms.txt](https://docs.revrobotics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.revrobotics.com/rev-professional-development-technical-path/gs/parts-identification/sensors.md).

# Sensors

## Touch Sensor

<figure><img src="/files/LYfIs8IrCI0bdQWrngCS" alt="" width="375"><figcaption></figcaption></figure>

A touch sensor is a form of[ digital sensor](#user-content-fn-1)[^1] that responds to some form of physical touch. The touch sensor found in the EDU Kit V2 uses a simple push button to switch between on or off. Within the Blocks programming language, this appears as True or False.

## Color Sensor

<figure><img src="/files/wMzJxco7jGhCIksJbAVG" alt="" width="375"><figcaption></figcaption></figure>

A color sensor is a form of [I2C sensor](#user-content-fn-2)[^2]. This type of sensor measures reflected light, allowing it to determine how much light is being seen, the distance to a surface, and what color is in front of it. The color sensor found in the EDU Kit V2 uses a [HSV model ](#user-content-fn-3)[^3]to determine color.

[^1]: Digital sensors have two states, known as binary states. Binary states can be thought of as an “either/or”, like how a light switch can either be in the “on” position or “off”.

[^2]: I2C sensors use a more advanced form of digital communication protocol than the previously introduced digital sensors. I2C allows a host, the Control Hub, to communicate with multiple devices sharing a bus.

[^3]: Hue, Saturation, and Value. A form of a cylindrical RGB color model used to do things like create color pickers for digital painting programs, to edit photos, and for programming vision code