3D Printed Wearable Devices

3D PRINTED WEARABLE DEVICES

BY ROHIT PARHIIEM ‘D’ROLL NO.41

3D PRINTED WEARABLE DEVICES:

They consist of clothing and accessories that incorporate computer and advanced electronic technologies

They are made of the smallest and most powerful computer chips.

These computer chips utilize 3D printing to produce completely custom made products.

A 3D printed wearable device can be said to be the brainchild of a fashion designer and an engineer.

They may have many practical functions and features but they are more popular for their aesthetic appeal.

3D PRINTED SMARTWATCH SmartWatches are often considered the less intelligent sidekicks of smartphones.

However there are SmartWatches which work independently and require no pairing.

It combines breakout boards and a 3D printed frame and it consists of four sections:

1. A battery charging circuit.

2. A vibrating motor for silent notifications.

3. A programmable core (8MHz Microduino microcontroller) with power regulation

4. Bluetooth LE and an OLED display with pushbuttons.

3D printed SmartWatches feel like smartphones attached to our wrists.

ELECTRONICS COMPONENT The SmartWatch has a 500 mAh 3.7 V lithium polonium battery.

This battery is connected to a JST connector and a two way switch.

When the switch is connected to the right, the circuit is in battery mode and to the left it is in charging mode.

The SmartWatch has an OLED display and two small LEDs.

The vibrating motor circuit consists of 1K and 33Ω resistors, a capacitor, NPN transistor and a motor.

COMPUTER COMPONENT The SmartWatch has a programmable core.

Within the 3D frame of the SmartWatch, there is a 8 bit Microduino microcontroller.

This microcontroller is connected to a programmable port and a Bluetooth Low Energy board.

The microcontroller has 14 digital I/O pins and 9 analog input pins.

This is the component which helps in communication with smartphones and other devices.

MECHANICAL COMPONENT The assembly of the small components of the SmartWatch is done using a fine

point soldering iron.

Soldering is the process in which two or metal components are joined by flowing a filler metal at the joint.

The filler metal has a lower melting point than the adjoining metal components.

It is used to establish a permanent connection between the electronic components.

The most commonly used filler metals are lead-tin alloys and zinc alloys.

MATHEMATICAL COMPONENT: The theorem which allows us to materialize the concept of 3D printing is called

Fubini’s theorem.

It states that an object of n dimensions can be represented as a spectrum of layers of shapes of n-1 dimensional layers.

Here we make the use of iterated integrals which are the result of applying integrals to a function of more than one variable.

Consider,

The integral on the right hand side is called the iterated integral.

CONCLUSION The potential of SmartWatches are huge.

The biggest attraction of current SmartWatches are their inbuilt health and fitness trackers.

The market size of SmartWatches is expected to grow from $3-5 billion dollars to 30 billion dollars within the next 3 years.

The cost of building a 3D printed SmartWatch is expected to drop to 25% of the cost of a phone with further improvements in technology.

They represent the coming of an era where more and more connectivity is achieved through smaller and smaller packages.

BIBLIOGRAPHY

http://www.shapeways.com/tutorials/designing_mechanical_parts_for_3d_printing

http://makezine.com/projects/make-43/open-source-smartwatch/

http://3dprint.com/14852/synapse-dress-anouk-wipprecht/

https://www.microduino.cc/wiki/index.php?title=Microduino-Core

http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_primer-solder.shtml

https://iit.edu/arc/workshops/pdfs/Iterated_Integrals_Shengzhe_Jin.pdf