Yoctopuce Yocto-RangeFinder, User Manual, Page: 7 / 497

1. Introduction
The Yocto-RangeFinder is a 58x20mm module enabling you to detect the presence of objects up to
one or two meters away depending on conditions, and to evaluate the distance of the closest object.
This module is based on a "ToF" (Time of Light) technology. The sensor emits laser pulses and
measures the time they take to come back to the sensor after reflection against an obstacle. The
Yocto-RangeFinder can also measure its own temperature, in order to determine when a new
calibration is required, and estimate the ambient light.
This small and relatively cheap module, using a quite harmless laser, does not pretend to be a true
telemeter that you could use to measures distances with a millimeter accuracy. Its accuracy is
limited, and the detection range depends on the environment. You can find tables describing the
expected accuracy depending on the surrounding conditions in the section called
Working principles
and limitations of this user's guide.
The Yocto-RangeFinder module
The Yocto-RangeFinder is intended to be used as laboratory equipment, or as industrial process-
control equipment, but also for similar applications in domestic and commercial environments
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Yoctopuce thanks you for buying this Yocto-RangeFinder and sincerely hopes that you will be
satisfied with it. The Yoctopuce engineers have put a large amount of effort to ensure that your
Yocto-RangeFinder is easy to install anywhere and easy to drive from a maximum of programming
languages. If you are nevertheless disappointed with this module, do not hesitate to contact
Yoctopuce support
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i.e. the scope of IEC 61010-1:2010 international standard
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support@yoctopuce.com
www.yoctopuce.com 1