pxt-ev3/docs/reference/sensors.md

Sensors

Touch

sensors.touch1.onEvent(ButtonEvent.Pressed, function () {})
sensors.touch1.pauseUntil(ButtonEvent.Pressed)
sensors.touch1.wasPressed()
sensors.touch1.isPressed()

Gyro

sensors.gyro1.angle();
sensors.gyro1.rate();
sensors.gyro1.reset();

Ultrasonic

sensors.ultrasonic4.onEvent(UltrasonicSensorEvent.ObjectDetected, function () {});
sensors.ultrasonic1.distance();
sensors.ultrasonic1.pauseUntil(UltrasonicSensorEvent.ObjectDetected);