# Analog robot

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An '''analog robot''' is a type of [robot](/source/robot) which uses [analog circuit](/source/analog_circuit)ry to go toward a simple goal such as finding more light or responding to sound. The first real analog robot was invented in the 1940s by [William Grey Walter](/source/William_Grey_Walter). The name of these robots were [Elmer and Elsie](/source/Elmer_and_Elsie_(robots)) (ELectroMEchanical Robot, Light-Sensitive). The original circuitry was developed using two vacuum tubes and a photocell to search and follow a light. Recently a kind of analog robots was developed by [Mark Tilden](/source/Mark_Tilden).

Some modern analog robots are [BEAM robots](/source/BEAM_robotics). [Braitenberg Vehicles](/source/Braitenberg_Vehicles) (described by [Valentino Braitenberg](/source/Valentino_Braitenberg)) also are frequently analog, consisting of the output of sensors connected to motors without any form of signal processing.

==See also==
* [Analog computer](/source/Analog_computer)

==External links==
* [http://www.solarbotics.net BEAM community] – A specific type of analog robot.
* [https://web.archive.org/web/20060303203147/http://www.khm.de/mg/seminare/robots/ KHM] – Robots in academia.
* [http://www.hesston.edu/academic/faculty/nelsonk/PhysicsResearch/RobotMK/report.html Analog Robotics] – A research report.

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Category:1940s in robotics

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Adapted from the Wikipedia article [Analog robot](https://en.wikipedia.org/wiki/Analog_robot) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Analog_robot?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.