LEGO EV3 Ultrasonic Sensor (45504)

General

This sensor uses the msensor device class.

	Value
type_id	30
# Modes	7
Connection	UART

Modes

	Mode 0	Mode 1	Mode 2	Mode 31	Mode 41	Mode 5	Mode 6
mode	US-DIST-CM	US-DIST-IN	US-LISTEN	US-SI-CM	US-SI-IN	US-DC-CM	US-DC-IN
Description	Continuous measurement	Continuous measurement	Listen	Single measurement	Single measurement	???	???
num_values	1	1	1	1	1	1	1
value0	Distance	Distance	Presence of another ultrasonic sensor	Distance	Distance	Distance	Distance
Min	0 (0.0 cm)	0 (0.0 in)	0 (no other sensors detected)	0 (0.0 cm)	0 (0.0 in)	0 (0.0 cm)	0 (0.0 in)
Max	2550 (255.0 cm)	1003 (100.3 in)	1 (another ultrasonic sensor was detected)	2550 (255.0 cm)	1003 (100.3 in)	2550 (255.0 cm)	1003 (100.3 in)
units	cm (centimeters)	in (inches)	none	cm (centimeters)	in (inches)	cm (centimeters)	in (inches)
dp (decimal places)	1	1	0	1	1	1	1
LED State	On, steady	On, steady	On, blinking	On momentarily when mode is set, then off	On momentarily when mode is set, then off	On, steady	On, steady

Values in the tables that look like ```this``` are the names of sysfs attributes or values returned by said attributes.

[1]: SI means SIngle shot mode. The value is read when the mode is set and does not change. To read a new value, set the mode again (e.g. echo US-SI-CM > mode).