Gateways will forward your wireless sensor data to the controller. You'll find a few different build options in the menu. Make sure your favourite controller supports it!
Sensors collect data from the environment. Such as light level, motion, temperature and physical button presses.
Actuators controls the environment. This could be a relay, servo, ir sender or a dimmed light. Most things can be controlled using a simple relay.
Want to contribute to MySensors.org?
Many of the projects and articles here on MySensors.org has been created by the community members. If you want to contribute to this site you can create a new project/article on openhardware.io. Our editors will publish some of them here on MySensors.org.