Misty Lessons
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      • 🤸Lesson 1: Movement
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      • 🛠️Lesson 5: Events
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      • 🦿Lesson 1: Loco-motion
      • 🤖Lesson 2 : Build a character
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      • 👀Lesson 5: Expand awareness
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  • ARDUINO PROJECTS
    • 🛠️Misty Tracker
    • 🦾Misty Arm
  • Community Projects
    • 🌤️Misty weather forecaster
  • HARDWARE EXTENSION
    • ⚙️Arduino breadboard support
    • 🦾Misty arm
    • 🥤Tin holder
  • Resource Database
    • 📁Image files
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    • 📁ChatGPT PDF files
    • 📁AR Tag Dictionary
    • ⚙️Technical Specifications
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  1. HARDWARE EXTENSION

Misty arm

It was a must for Misty to have a telescopic robotic arm, to give her even more degrees of freedom and the ability to grip or bring around several objects!

Last updated 8 months ago

On this page, you will be able to download the .stl files containing the models for 3D printing your Misty arm.

.stl files:

Adjustments

The front part of the arm has been developed to be completely customized.

We modified the base of the gripper deleting the behind wall and inserting a positive M that matches with the mobile one.

The servo motors that we'll use in this project are the positional SG90.

Assembly

  1. Prepare the new arm - Screw the SG90 servo motor in the arm with the small gear towards the outside part. - Slice the mobile part in the arm. - Insert the gear in the servo motor (the gear will rotate in the middle part of the rail, so you don't need to insert it from the very beginning of the gear) - Insert your front part in the mobile.

  2. Screw the new arm - Unscrew the old arm. - With the same screw insert the new 3d printed arm.

Pictures

In fact, we want to have the possibility to have different tools but not to print a new arm every time. To solve this we inserted a negative M - of Misty - where you can put the front part that suits your needs better. For example, we chose to insert this - I modified the size of the two gears of the gripper to 103% to have a better fit.

🦾
gripper
2KB
M.stl
M letter for matching pieces
80KB
base_gripper.stl
338KB
arm.stl
257KB
gear.stl
221KB
mobile.stl
arm
gear
mobile
Modified base of the gripper
arm
mobile part and gear
complete arm
arm extension
side picture with cup holder
arm
standard position