Safe & Secure by Nishu

prototype-3

Project Description

Light has always been used as an object or medium to help, direct, signal, assist and inform us on a particular status or situation. It is used in different colours and forms  that help translate our language into a visual and simple medium. Using this medium I have chosen to build three Body-Environmental Switches that all revolve around an overarching theme of Safety & Security. These switches activate LED lights when a person interacts with their environments. 

The reason I have picked this theme is because I have drawn inspiration from three incidents that have occured in my life in the past month. A common point between all these situations was that they occurred due to a lack of a visual cue. In the presence of light signals, people would have been more aware of their environment and the situation they were in. Hence be able to avoid these situations accordingly. 

 

1- Door lock sensor (Dragonbolt)

door-sensor

Description:

The first incident that occurred was three weeks ago when someone broke into my house. As all doors and windows in my house are sliding mechanisms, unlike a regular door with a hinge there is no obvious way to know when these kinds of doors are locked. Most doors of this nature generally indicate that the door is locked with a clipping sound as you close it. But many a time while closing these doors, if not shut with the right force the door remains unlocked. I chose to intervene here with a door sensor that replaces the audio cue for a locked door with a visual one. So when the door is shut properly, the LED light comes on. This also helps indicate from a distance when a door is unlocked.

The sensor uses a simple mechanism of a bridge switch such that, when the door is pushed to the right distance, the circuit closes and the  LED is turned on. With the help of a small piece of copper on the sliding door, it completes the circuit on the door frame, turning on the LED. To also aesthetically present the LED, I have propped it onto a copper dragonfly model that can be mounted on a wall close to these doors. 

 

Parts & Materials:

Parts

  1. Arduino Nano 33 IOT
  2. Red LED
  3. USB charger
  4. Breadboard
  5. Jumper wires
  6. Alligator to alligator clips 

Materials

  1. Copper tape
  2. Metal dragonfly
  3. Double sided tape

 

Detailed images:

1 2 3 4

Discussion:

At the moment the prototype does consist of a lot of wiring as I needed to conceal the breadboard and the laptop that is powering it. In the next iterations I would work towards using a 3V battery as a power source and create a compact unit entirely around the dragonfly so it can be instantly installed anywhere. I would also like to find a replacement for the copper tapes that are holding the jumper wires with a conductive sticky pad that can be easily installed on the door frame. 

 

2- Baby back sensor (Sleepeasy)

baby-sensor

Description:

The second incident that occurred was a month ago while having some friends and their new born baby over. Just as they walked in they laid their baby boy down on the bed. Being new parents and having read all the books on how to raise and take care of the baby, they alternately took turns to check on him. They were most concerned to see whether he was always sleeping on his back. It was then that they told me that in spite of the baby sleeping in a crib in the same room as them, they constantly needed to wake up at night to make sure that he is always sleeping on his back. This is to prevent Sudden Infant Death Syndrome (SIDS) It is the unexplained death, usually during sleep, of a seemingly healthy baby less than a year old. SIDS is sometimes known as crib death because the infants often die in their cribs. Having this constant fear of the death of their child sounded horrible. 

And so my second intervention is a Sleepeasy baby pad that uses a push button mechanism. The pad is meant to be kept under the baby and as long as the baby is on its back, the weight of the baby touches the surfaces together, lighting up the LED. The lit LED will always inform the parent that the child is on its back. If the baby were to roll off, the surfaces would separate and the LED would go off.  

 

Parts & Materials:

Parts

  1. Arduino Nano 33 IOT
  2. Red LED
  3. USB charger
  4. Breadboard
  5. Jumper wires
  6. 6. Alligator to alligator clips 

Materials

  1. Copper tape
  2. Aluminium foil
  3. Thin foam paper
  4. Origami paper

 

Detailed images:

1 2 3 4

Discussion:

Currently the prototype uses aluminium foil as the conductive surface and an LED on the breadboard. Even though the aluminium was stretched it does not go back to its original state as the weight is relieved. This causes the LED to flicker as it transitions between states. The next iteration would look for alternatives for this surface and work at incorporating the light within the sleep pad. With the help of Lilypad LEDs or even LED strips, I would be able to incorporate them within the thickness of the sleep pad.

 

3- Sanitize please

sanitizer-sensor

Description:

Having just recovered from COVID-19 has made me more cautious and more worried for my loved ones. As time passes, the world is getting back to normal but people still seem to forget that we are in the midst of a pandemic. My mother being an interior designer often has a lot of her team members and vendors come over. But often they forget to sanitize their hands as they enter the house. In order to keep enforcing this protocol, I have decided to create a sanitizing station that visually captures their attention as they enter.  

With the simple use of a bridge switch, I have created a platform to place a sanitizer on. As long as the sanitizer is on the platform, the LED stays on and captures people’s attention as they enter.

 

Parts & Materials:

Parts

  1. Arduino Nano 33 IOT
  2. Red LED
  3. USB charger
  4. Breadboard
  5. Jumper wires

Materials

  1. Copper tape
  2. Wooden block
  3. Thin foam paper

 

Detailed images:

1 2 3 4

Discussion:

Currently the prototype uses copper tape to complete the circuit. I did face some difficulty in attaching the jumper wires on the side. As the pins of the wire are straight, I need to bend them a bit to come in contact with the copper tape. That caused a bit of a loose connection. In my next iteration, I would like to replace the copper tape on the bottom of the bottle with an adaptable base that can be used on sanitizers of different sizes.

 

Arduino code for all 3 prototypes

https://github.com/AbhishekNishu16/Body-Centric-Tech-Prototype-3.git

 

Circuit diagram for all 3 prototypescircuit-diagram

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