This sound-following 3pi robot uses three Electret microphone breakout boards and two 74HC4052 multiplexers. Here is a video of the robot in action:

For more details, see this thread on the Pololu forum.

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Waiter Robot can make a “Robot Bar” for your next exhibition, show, private event, or sales promotion. They use Pololu 3pi Robots to deliver food and drinks in an remarkable way. Update: The original site for this project is no longer accessible, so we have removed the link.

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A temperature probe, a battery pack, and a Pololu Orangutan SVP-324 Robot Controller are used to make BrewMon, a beer-brewing monitor.

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This video shows a heavily-modified 3pi that uses distance sensors and encoders along with a flood-fill algorithm to find the shortest path through a walled Micromouse maze. The robot is described in more detail in this forum post.

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This small hexapod using the Micro Maestro is controlled remotely using a Bluetooth module. Very detailed build information is available in this blog post.

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Only5 is designed to be a general-purpose, high-performance robot. It uses many Pololu parts including the Pololu 5" Robot Chassis RRC04A and the Baby Orangutan robot controller. For more information see the project page.

Here is a short video showing its impressive speed:

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Groovin’ Grover is a marionette manipulated by four hobby servos and a Pololu Maestro servo controller. You can control each of Grover’s limbs independently and make him walk, wave, and – most entertainingly – make him dance. Groovin’ Grover is easy to assemble and wire up. This Instructable explains how to build your own Groovin’ Grover.

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This excellent guide from C.I.r.E. (Club de Informática, robótica y Electrónica) shows in detail how to build a fast (> 2 m/s) line-following robot from scratch, and it makes use of a number of Pololu products.

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This project by Kazuhiro Ouchi (in Japanese) shows a 3pi robot with an ARM mbed controlled by Bluetooth keyboard.

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We found this robot pictured on the Adafruit forums driving through some snow. It was made with a TReX, a 4WD Wild Thumper, and a Boarduino.

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