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3D Printed "Mousey" the Light-Seeking Robot


Duration: 3 Hours

Category: Robotics&Electronics

Programming: None


Description:

Dive into an engaging and slightly more challenging robotics project where you will build "Mousey," a 3D-printed robot designed to mimic the scurrying behavior of a mouse. This project is especially suited for those looking to expand their skills in electronics and robotics, with a focus on analog circuitry and soldering, without the need for programming.


This is a modern take on Gareth Branwyn's brilliant "Mousey" the light-seeking robot. Created a decade ago, Gareth's original design sparked the imaginations of makers and hobbyists worldwide.




Project Features:

  • 3D Printed Body: Mousey boasts a custom-designed, 3D-printed chassis that replicates the familiar shape of a computer mouse, providing a compact and unique housing for the electronics.

  • Motorized Movement: Equipped with two lively DC motors, Mousey is engineered for speed. This robot doesn't just move; it zips across surfaces with an energetic pace.

  • Light Sensitivity: With the integration of two infrared (IR) transmitters sensitive to light, Mousey actively seeks out the brightest spot in the room. This behavior is enabled by a clever use of simple analog electronics.

  • Whisker Navigation: A physical whisker (limit switch) at the front acts as a tactile sensor. When Mousey encounters an obstacle, it triggers the switch, causing the robot to back up and dart away in a new direction.

  • Analog Circuit Brains: The heart of Mousey is an audio operational amplifier (op amp), a resourceful hack that amplifies the signals from the light sensors to drive the motors. This analog solution is inspired by Randy Sargent's original design, prioritizing swift responses and straightforward circuitry.

  • Soldering Skills: Participants will practice their soldering skills while assembling the electronic components, offering a more complex and rewarding challenge compared to projects with pre-assembled boards.


Learning Outcome:

By the end of this workshop, you'll have created a fully functional robotic mouse that navigates and responds to its environment without a microcontroller. You'll walk away with a greater understanding of analog circuits, practical soldering experience, and the joy of having built a robot that's as whimsical as it is technical.


Prerequisites:

Participants should have some prior soldering experience due to the complexity of the electronics involved. All other materials, including motors, IR transmitters, and the 3D printed chassis, will be provided. Suitable for makers aged 10 and up, this project promises a fun and educational experience for those with a bit of technical background and a love for robotics.

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