ARDUINO | FLEX STRIP CONTOLLED ROBOTIC HAND PROJECT

Project Overview
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Use five flex sensors (one per finger on a glove) to control five servo motors (each one moving a corresponding finger on a robotic hand). When the user bends a finger, the robotic hand mimics that movement in real-time.

Before starting this project, you should complete the Flex Strip Project and the Robotic Hand Project.

SECTION 1 | MATERIAL NEEDED

• Arduino Uno
• Flex sensors x 5 - One per glove finger
• Resistors (10kΩ) x 5 - For voltage divider with each flex sensor
• Servo motors (e.g., SG90) x 5 - One per robotic finger
• Power source (5V 2A min) x 1 - External source if servos are too demanding for USB
• Robotic hand frame x 1 - 3D printed or manually built (can be basic)
• Breadboard + jumper wires x Many - Flexible wires recommended
• Glove x 1 - Any soft/stretch glove will work

SECTION 2| THE PRINCIPLES

SECTION 3 | THE CONNECTIONS

SECTION 5 | THE CODE

To calibrate a range of values for each finger position the followin code:

• Asks the user to repeat each of the 3 positions (Open, Half-Closed, Fully Closed) 3 times
• Stores these 3 values per position and calculates the minimum and maximum (range)
• Creates a 2D array with 5 fingers × 3 positions, where each element is a {min, max} pair
• Outputs the entire array in a code-ready format, so you can copy and paste it into your servo control program

• CALIBRATE EACH FINGER

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SECTION 4 | CHALLENGE

The project overview
Materials needed
The connections / wiring
About - Calibrate the finger movement - 3 positions per finger
The code to calibrate

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