Portfolio Saumil Bhandari

PORTFOLIO

2 0 2 4 S au mi l

Bhandari MSc.

Saumil Bhandari saumil.bhandari@gmail.com +43 6886 443 4301 Julius Raab Strasse 1-3, Linz, Austria 4040

Education

2024

MA. Interface Cultures Kunstuniversitat Linz, Austria

Key Subjects • Social Interfaces, Interactive Art - Art Thinking

Personal Statement

• Critical data, Mapping the data

I am trained in channelizing the innate design instinct into a more structured approach to design with a special interest in redefining the interactions with everyday products and services across both physical and digital platforms.

• Post Media Practice, Sustainable IT • Fashionable Technologies, Playful Interfaces • AI for artists, Stage based Interaction

2024

Portfolio Online works

https://issuu.com/saumilbhandari/docs/portfohttps://wordpress.com/post/saumilbhandari. lio_saumil_bhandari wordpress.com/75mqvxA

MA. Post digital Lutherie Kunstuniversitat Linz, Austria

Key Subjects • Analog & Digital Instruments Fabrication

Skills

• New Interfaces for Musical Expression, • Interdisciplinary Collaborator & Facilitator •

Design Research, Mapping Research for Insights

• User Centered Design Thinking • Hands on Fabrication - Power Tools, Soldering • Digital Fabrication - CNC , 3D Printer ( FDM, MSLA) • Sketch Ideas, Prototyping

Wireframing,

UI

• Sound Synthesis , Sonic Visualizations • Tangible Music, Sonic Interaction Design • Electronic Music Composition, Music Economy

2014

Design,

• Interactive Proof of Concept, Usability Testing

MSc. Product Design Glasgow School of Art Glasgow, UK

Key Subjects

• CAD Modelling & Render,

• User Centred Design Frameworks

• Schematic and PCB Layout Design, Firmware

• Service Design, Ethnographic Research

• Product Certifications CE, UL

• Human Factors, Ergonomics, Data Visualization

• Mass Production Development

2007 Software • STM32 IDE , ESP32 IDF, VS CODE • Arduino, Processing • Altium, Eagle, KiCAD, EasyEDA • Adobe Suite • Solidworks, Rhino, Fusion 360, • Gravity Sketch • Bitwig,Ableton, MAX MSP • Python, Wekinator, UML

BEng. Electronics & Communication Bhilai Institute of Technology Durg, India

Key Subjects • VLSI systems, Analog & Processing

Digital Signal

• Embedded Systems, Semiconductors • Microwave and Radio Engineering

Experience

2023 Lead Design Technologist,

On2Cook Pvt. Ltd. Ahmedabad, India

On2Cook, the first in-house product of InventIndia innovations Pvt. Ltd is an patented cooking device that utilizes Microwave as well as Induction energy simultanously to cook food faster keeping intact its nutrients.

Key Works • Production Cycle Management, Certification Checks and Coordination • Electronics Specificatiohns and Architecture, Hardware Design, Firmware Design, User interface Design.

• Research and Development for Induction Cooker EM field and Magnetron Microwave Simulations and Validation using Laboratory Tools .

2016 Design Technologist,

Invent India Innovations Pvt. Ltd. Ahmedabad, India

Interdisciplinary role as UI UX designer, Product Designer , Electronics Lead working on product from diverse verticals including Healthcare Home Automation, Consumer Electronics etc.

Key Works • Lead Multiple Design and Development Projects at a time.

• Proof of Concept Fabrication & Experiments • Project Design Effort Estimation, Project Plan creation, Project Specification Creation.

• Electronics System Architecture, Components Selection, Hardware Design, Firmware Design.

• PCBA Bringup, Product Assembly and Test Report Creation • UX Research, Wireframe Creation, UI Conceptualization, Coordination with Developers

2015 Intern at Machines Room, LimeWharf London, UK

Key Works • Laser cutting and 3D printing for clients.

• Electronic prototyping using Arduino.

2014

Product Designer Bamboo Centre, Auroville, India

Research and Development on Bamboo as a lifestyle material for a sustainable future.

Key Works • Construct a bamboo chair using bamboo bending technique.

• Build a bamboo lamp using ball and socket joint mechanism with bamboo.

2013

Junior Product Designer Light Fish, Auroville, India

Design and development of lighting solutions using various LED modules.

Key Works • Plan and execute in-house manufacture of Aluminium street lamp modules for client.

• Design and development of stainless steel Lamp Display unit for weekly stall exhibitions.

• Conduct experiments for testing luminous intensity and power consumption of LEDs.

2013 Product Design Intern

Prakti design lab, Pondicherry, India

Key Works • Conduct scientific experiments for testing the performance of Prakti’s unique low cost cooking stove.

• Ideate for form and functionality of the future prototype of stove.

• 3D Model and renders.

2012 Product Design Engineer at Sai Infosystems ltd. (R&D) Bangalore, India

Key Works • Design for manufacture of enclosures for Surveillance cameras, IP phone, Webcam among other projects.

• Design for assembly of printed circuit boards inside enclosures.

• 3D Modelling and 2D drawings generation.

2023

2022 ON2COOK

2021 Vital Trace

Fabric Display Music Interaction Wall BreathSynth SoundClock

Cooking device that combines Microwave and Induction to reduce cooking time by half and minimize nutrient loss

Electric Hookah

App for enhancing the restaurant kitchen cooking experience for Chefs to be able to cook on 5 recipes simultaneously

In vitro analysis of heart rate and Lactate measurements to detect fatigue and chances of premature birth

2020 Wallet for Blind

A wallet for blind to know the number on currency and keep a check on counterfeit money.

Automated Door handle Sanitizer using UV LEDs tested in lab to cure SARs COV-2

UVSET

Planters under concentric grow lights with programmable patterns based on time and plant type

Ring Light

Golf Trolley Robot

PROJECT . . .T I M E L I N E

Motored buggy that autonomously follows its Golfer using accurate RF based Triangulation for distance, angle tracking

LABTECH

Automated blood stain coloring device to detect the presence of Red Blood & White Blood cells A 3-stage mobile phone cleaning KIOSK inside shops actuated by user through scan and pay based payment gateways

Mobile Cleaner

Upgrade traditional Hookah set up and user experience by regulating heating source power with breath rate meter

Mobile Cleaner App

Payment tracking-device management app to be used by the service provider, kiosk owner, customer who wants to get mobile phone cleaned

2019

Capacitive Sensor around inlet pipes to non-invasively detect quantity of water consumption from households

Domestic Water Use Control

MojoPAQ

String n Ply Table for Piano

An instrument table made out of plywood with joineries only through strings.

Reheat Food in Lunchbox compartments using a capacitive touch interface integrated

ZIPGRID

A society management service provider to access help-desk, finance and admin Accelerometer based speed tracking to audio-visually alarm the driver for over-speeding using GPS coordinates mapping of routes.

Bobble Head CEAT

Record & Cook recipe by automated dispensing food from compartments organised into vegetables, spices, cereals

Automated Cooking Device

Tea bag based Tea m a k i n g - c u m - d r i n king bottle with varied levels of Tea infusion and hotness control

Tearado

User interface for Retinal Imaging used in hospitals and clinics

2018

Electric Lunchbox

2017

Universal Phone docking powerbanks compatible with iPhone, microUSB, Type-C ports

BioMedix

PROJECT TIMELINE

2016 Smart Water Bottle

On2Go

Capacitive level sensor water bottle to detect amount of water drunk by user 2 -in- 1 AC DC adaptorcum-10000mAh Powerbank with type C USB able to output upto 40W power across multiple brands of phones.

Fabric Display Pixels are crafted from a conductive fabric, a touch of the future interlaced with the warmth and familiarity of a traditional textile. But the magic truly begins when this fabric is coated with thermochromic ink. This special ink responds to heat generated by the conductive threads, changing color to reveal words, images, and patterns.

FABRIC

Imagine holding a fabric book in your hands, its pages woven with this magical textile. As you turn each page, words appear on the soft fabric like whispers of a story, restoring the charm of reading a physical book with the ease of digital information. The glare of LCD screens is replaced with the soft, comforting touch of fabric, making reading a tactile, intimate experience once more.

D I S P L AY Conductive fabric pixels sewed with conductive thread & push buttons

Pixels of a display spring to life not just in glass or plastic, but in the delicate weave of a fabric. Fabric Display Pixels, where technology and textiles interweave to form a living tapestry of information.

Before Painting

Mapping color change with temperature change in Fabric Display

Click here to watch video

After applying Spurtz thermochromic paint

After heating through passing current

PAINTS USED

1 :3

EXPERIMENTS

FOR

COLOR

CHANGE OF 1:1

2 :1

Americos thermochromic 31 deg pigments - powder

Thermochromic pigment on conductive thread

Testing degree of color change Ratios

THERMOCHROMIC P I G M E N T S ON DIVERSE HEATING ELEMENTS AND SUBSTRATES

Pigment Fevicol Observation

3 :1

1

3

1

1

Significant Color Change Partial Color Change

2

1

Slight Color Change

3

1

Least Color Change

Americos is a local manufacturer of non-toxic theromochromic pigment. These pigments change color at 31 deg C. They need to be mixed with binding agent ratio of which need to be experimented with. As you see above, 1:3 ratio shows color change from original color yellow to white color of the binding agent and the pigment turning semi-transparent.

Experiments shown below have been carried out using Spurtz thermochromic paint - Black-Pink

Thermochromic pigment on conductive pen ink used on a sheet of paper

This pigment was not chosen as it requires more experiments to find a suitable binding agent as well as ratio. Hence, a ready-made thermochromic paint was preferred.

Thermochromic pigment on Copper Spurtz thermochromic paint

Thermochromic pigment on Aluminum

Heating element

Maximum contrast was observed in Black-Pink pigment and hence was chosen for further experiments.

Thermochromic pigment on Adafruit - Knit Conductive fabric having 63% cotton, 35% silver yarn and 2% spandex

Based on the experiments, a combination of heating mediums - Adafruit SS thread and Knit Jersey Conductive Fabric were used keeping the aesthetic of the original idea of a fabric display and better thermal performance.

Rise time

Fall time

Adafruit SS thread 2ply 4 s

6s

Scribe Silver Conductive Pen ink on Paper Copper Tape

8s

10 s

3s

10 s

Aluminum Foil

10 s

5s

Adafruit Knit Jersey Conductive Fabric

3s

5s

TEST 1

Negative Print Format

TEST 2

Negative Print Format

Printing Time - 13 min Developer 4 tsp Sodium Carbonate Soak time - >5 min

Printing Time - 13 min Developer 2 tsp Sodium Carbonate Soak time - 2 min

Print on Photo-sensitive film

Print on Photo-sensitive film

Soaked in Sodium Carbonate solution for more than 5 minutes. The small container size unable to soak complete sheet at once

Soaked in Sodium Carbonate solution for 2 minutes. Plate used to soak complete sheet at once

TEST 3

Positive Print Format

Printing Time - 21 min Developer 2 tsp Sodium Carbonate Soak time - 2 min

TEST 4

Positive Print Format

Previous sheet washed and Prealigned on paused display Printing Time - 21 min Developer 2 tsp Sodium Carbonate Soak time - 2 min

TEST 5

Positive Print Format

Fresh copper sheet pre-aligned Printing Time - 21 min Developer 2 tsp Sodium Carbonate Soak time - <2 min

Print on Photo-sensitive film

After rubbing with softbrush and soaking in clean water After rubbing with soft brush and soaking in clean water

After rubbing with soft brush and soaking in clean water

Result - Lack of binding between the photo-exposed layers with copper sheet

Result - Better binding between the photo-exposed layers with copper sheet but open pads and missing tracks

Learnings Sodium Carbonate to be reduced four 4 tsp Copper sheet soak time not to exceed 5 minutes

Learnings Positive Photoprint format to be tested for tracks Continue with 2 tsp Sodium Carbonate in 1.5 cups water Keep Copper sheet soak time close to 2 minutes

After soaking in Sodium Persulphate solution for 8 hours

Result - photo-exposed layers correspond with tracks and pads and have better binding but shift print occurred while alignment Learnings Pre-align on first photo display on pause and print after replay

Result - Tracks and pads open and missing rows of tracks at the end

Result - Exposed copper was observed to have dissolved in the solution, leaving partial areas between pads. Kapton tape laminate is seen holding the copper tracks

Learnings Use a fresh copper sheet or wash the previously used sheet by cleaning with I.P.

Learnings Sodium Persulphate quantity to be increased and a container with even coverage to be used

TRIALS FOR F L E X I B L E PCB MAKING

Soaked in Sodium Carbonate solution for less than 2 minutes.

To po

f th

ef ab

ric

Polyester Fabric c Ba

f ko

ab ef

ric

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Female Tich Buttons sewn on the back side of the fabric using conductive thread

Fabric to Circuit connection procedure

Solder pads Male Push buttons

Connecting ESP32 and MAX7219 – 8X8 LED Dot Matrix on heat insulated layer below PCB

CNC Milled PCB

CNC Milling PCB

SONIC PIXELS Imagine stepping into a world where every move you make becomes a note, a rhythm, or a melody. Where your favorite albums and cherished sound bytes come alive, responding to your dance, your energy, your pace.o Sonic Pixel, an immersive, interactive sound-synth at the the sway of your body.

It deconstructs the music you know and love, turning it into a fluid, ever-changing mosaic of sounds that reshape and evolve with your movements.

Hexdata of sound byte in wave format

Depth - Imaging

START 28%

NUMSEGMENT 560

END 58%

Depth body imaging Allows 3D movements Allows object mapping

Using depth imaging technology, you can derive new synth samples from your favorite sound bytes. Whether you’re pulling sounds from iconic movie lines, snippets of a treasured podcast, or even a loved one’s laughter, every sound can become a part of your musical lexicon This is not just a two-dimensional pixelated sound screen; it’s a fully three-dimensional interactive wall that captures your movements in real time and responds by playing different sections of a musical WAV file. Whether you step forward or backward, twist your body or wave your hands.

Skeleton Joint mapping To get the coordinates from 12 joints of the body and derive overlays from those joints. This was another alternative method but was limited in 3D movements capture Click here to watch video

PROCESSING Initilaize the camera with width and height pixels

ARDUINO

Convert X-Y coordinates of 2D image to 1D image pixel values

Adjust delay settings to play original audio from header Derive depth values for 1D image

Play i2s write() until each bytes is played for each segment 6bytes at a time.

If depth value between 1000 to 2000 Initialize I2S audio settings for ESP32 Assign white color to those depth pixels For each NUMSEGMENT find the no. of bytes to play from audio header file by calculating the difference between the STARTHEX array and ENDHEX array elements

Convert START and END PERCENTAGES to STARTHEX array and ENDHEX array

Parse received data string into START PERCENTAGE and END PERCENTAGE array as well as NUMSEGMENT array

Convert pixel values to percentage

Format the data string into start and end pixels for each body segment

Send data string over serial port

Reduce image resolution by skipping pixels during image scanning loop

POWER ON

LOGO DISPLAY

READ MOTOR ENCODER STOP VALUES FROM SD CARD

ALGORITHM

IF Rotary Encoder Button

F L O W

pressed

READ ROTARY ENCODER VALUES

A U T O M A T I C COOKINGDEVICE

MAP ENCODER VALUE TO SELECTED MOTOR

MAP SELECTED MOTOR TO FOOD NAME

STORE MOTOR NAME IN JSON MOTOR (i) NAME (ii) WEIGHT (iii)

DISPLAY FOOD STATISTICS MENU ON BLUETOOTH

DISPLAY FOOD STATISTICS MENU ON BLUETOOTH

While button not pressed again OR ENCODER LIMIT NOT REACHED

NAME (iv)

VEGETABLE DISPENSES

MOTOR ON: UPWARDS

READ WEIGHT

COMPARE ENCODER VALUE

READ ENCODER THRESHOLD FROM SD CARD

READ CURRENT ENCODER VALUE

ROTATE LEFT ENCODER 1

DISPLAY LIST OF LEFT SIDE ITEMS ON POP UP ON RECORD RECIPE SCREEN ON THE LEFT OF ROW

CHOOSE OIL

SCROLL THROUGH THE LIST OF FOOD ITEMS ON LEFT SIDE

SELECT OIL : PRESS ROTARY ENCODER

U S E R I N T E R FAC E

GO TO DISPLAY DISPENSING SCREEN

STIRRER MOTOR MOVES TO SELECTED OIL

OIL DISPENSES WITH WEIGHT FEEDBACK

PERISTALTIC PUMP ACTUATES

USER CHECKS THE DISPENSING LIVE STATUS ON DISPLAY

SET TEMPERATURE to 100 deg C and START INDUCTION WHILE OIL DISPENSES

DISPLAY TEMPERATURE UPDATE VALUE ON DISPENSING SCREEN

DISPLAY INDUCTION OFF STATUS

TEMPERATURE LEDS REMAIN ON

DISPLAY SELECTED TEMPERATURE ON DISPENSING SCREEN

DISPLAY INDUCTION ON STATUS

TEMPERATURE LEDS BLINK WHILE INDUCTION IS ON

DISPLAY INDUCTION ON TIME ELAPSED

DISPLAY INDUCTION ON TOTAL TIME ELAPSED

A U T O M A T I C COOKINGDEVICE

Common probe for ECG and BIOIMPEDANCE measurement Step 1. Guide to scalp to make skin contact with the outer tube

Step 2. Apply pressure to inner tube to put patch on baby’s head

Project Photo

Step 3. Pull cable, maintaining downward pressure on the tube to activate clips Step 4. Remove external guide tubes to leave patch attached and plug lead into leg-strap monitor

ANALOG MEASURE Body impedance is approximated to 1Mohms. For proving the circuit, body impedance was simulated using a resistor of 1Mohms. Usually body imepdance is less than 1Mohms. To proove the maximum resolution of current we can mea-

Measure Small Currents nA uA

sure through this circuit 1Mohms was

Induce bias voltage across CE ( Counter

taken as simulated body impedance.

Electrode). Sensor in above diagram is the baby’s head impedance across two probe points. As Lactate builds up during delivery in mother’s body, baby’s head impedance increases. This change in resistance can be measured with measurement of current converted to voltage using Trans Impedance Amplifier.

Body-Impedance is used to determine Water Contents in body in non invasive smart weighing machines. Other applications can be measuring photodiode output, Battery discharge output when current is very small in orders of uA.

Schematic capture of AD5941 and Audio Jack conenctor where probe will be placed.

For Lactate measurement, AD5941 pins are CE, RE, SE as a result R39 is zero ohms.

R41 between RE0_CONN and SE0_ CONN is the measurement resistor for Chrono Amperometric test.

R93 value should be DNP if internal gain resistor is used. If external gain resistor its value should be adjusted to match the uA readings we get during testing.

ANALOG MEASURE

VBIAS is set through code. It was set to 1.6V. = Vce VZero is also set through code. It is set to 1.1V. = Vse R41 considered was 1 Mohms Current = (Vce-Vse) / R41 = (1.61.1)/10000000 = 0.5uA

Probe attached to baby’s head during birth

Set RTIA - > (Measurable Voltage for Gain selected )/ ( Current ). As per Datasheet for Gain =9, measurable voltage is 0.133V

ANALOG MEASURE

RTIA = 0.133/.5 = 2.6K

RTIA

(Feedback resistance Trans ampedance

Amplifier) - 3K closest approximation to

2.6K can be set through code ADC Gain - 9 - Set by code Vbias and Vzero can be set by code as seen above Serial Output shows 0.5. As a result device can measure 500nAmps for body impedance 1 Mohms.

Legplate to be wrapped around Mother’s leg during birth and connected to probe with AUX connector

11 December 2022 ELEMENTS 1. Active Space 2. Chat with BOT button 3. Discovery Hopper Space 4. Group thread–(One thread) 5. Bundle of Zip Desk 6. Hopper button 7. Request/Complain Thread name 8. Progress on request/ complain thread 9. No. of new messages 10. No. of pending Requests & Complains 11. Last updated time 12. Menu Button(Filters,Settings,Account)

Process Maps to communicate all the interactive elements of a screen that need to be coded for 11 December 2022

23:33

23:33

ELEMENTS 1. Profile photo 2. Name text 3. Address text 4. Age text 5. Born text 6. Back Navigational button 7. Menu button 8. Rating Heading text 9. Ratings 10. Content Heading text 11. Content(photos,topics) 12. Call button 13. Chat button

Final UI Screens are ed into modules, with its interaction

11 December 2022

23:33

divideach flow

U S E R INTERFACE Z

I

P

G

R

Z

I

P

G

R

I

D

I

D

CURA 200

CURA 300

CURA 400

Layout design and composition was an important criteria in planning Electronics Architecture for this project

All the three rings and the centre motor PCB had to run from one power supply USB adapter. Power was daisy chained between all PCBs using type C cables.

L AYO U T S T R AT E G Y

LAYOUT S T R AT E G Y

S E N S O R D E S I G N

Experimented with the size of Capacitve electrodes to be able to accurately sense fingers with an air gap of 2mm between sensor and outer plastic

Ground Pours are provided between adjacent capacitve electrodes to not allow for false triggering due to extreme proximity.

A tangible interface aimed to bridge the disconnect between donors and charitable causes

CHARITY DONATION

DEVICE

A prototype fabricated in glass was tested on potential donors to validate interaction and its usability issues. The balloon inside the prototype inflated proportional to the blow.

The amount of money that you collect into your charity account is shown in LED Lights. The amount you donate towards selected charityis indicated through the volume of balloon.

To achieve an aesthetic of a living device, the device uses balloon to breathe while it is not used. The device while being a functional product intends to be a living artefact at home.This device intends to disrupt the normal user interaction with charities over internet or bumping into charity workers on streets. It lives with donor in his home building a deeper relationship with idea of empathy.

11 December 2022

23:33

Indian + Tandoor

Italian + Pizza

Asian + Continental

Pantry + Salad

U S E R EXPERIENCE ON2COOK

FOR

B2B

10 waiters 2 captains 1 manager Kitchen Layout and composition of staff at JW Marriott

Photo documentation of Kitchen Layout, Chef’s Team, Kitchen Order Ticket, Appliances

Journey of an order from customer’s table into food

Widget for On2cook 3 Expands

30 sec Add all Ingredients

2 min Boil Pasta

Display s h o w s p l a c e of pan

D i s p l a y shows Press Knob Button

Display shows that Wild Spaghetti recipe is started first

Display shows Preheat Device Task has started

Display new

starts timer

Display Shows that Sub Recipe for Wild Spaghetti is assigned to on2cook 3.

Display shows this sub-recipe is boiling pasta

Display shows timer for adding pasta

Display shows keep ready All ingredient soft Recipe Pasta, Veggies, Spices Sauces from Storage

Context: 5 no. of On2Cook Devices to be controlled by one Chef in the Kitchen. The App is used on a 32-in monitor inside the Kitchen to assist the Chef

U S E R EXPERIENCE

Display starts new timer for adding pasta

ON2COOK

30 sec Preheat

4 min Cook chicken

FOR

B2B

Mapping task flow of Chef with the device display screen flow

Widget for On2cook 3 Collapsed

Widget for On2cook 4 Expands

Detailed screen flow for display

Display shows ingredient list of Recipe Wild Spaghetti to bring from Storage

Display shows Peri Peri chicken is assigned to On2cook 4 and display shows to place plan.

Display shows press knob button and close the lid

Display shows image of marinated chicken to be kept ready

Display shows induction mode is started

Display shows add Chicken

Display shows new timer

Widget for On2cook 4 Minimized

U S E R EXPERIENCE ON2COOK

FOR

B2B

Developing wire-frames based on the taskflow analysis

Dual source combination Cooking Device that uses Microwave energy to cook food from insides and Induction cooker to cook food from the bottom.

In such heavy duty EM wave based product, the PCBA needed to be thoroughly isolated from its own emissions and be immune to interferences.

Magnetron emits Microwaves in 2.42.5Ghz band at 1.5kW. Induction is based on Quasi Resonant Single IGBT In- verter based design that switches IGBTs between 40Khz to 20Khz to regulate the output power from 200W to 2kW

Bottom Induction glass plate had risen to temperatures as high as 120°C. PCBA below it need to be protected from high temperatures.

THERMAL ANALYSIS

Customized Choke Design on lid

Magnetron Antenna Outlet

Typical Choke Design of Microwave Oven Door

Choke Design parameters are patented and its variations are used across different Microwave Oven manufacturers

EM WAVE A N A LY S I S

Factors affecting Microwave Leakage in this Design

Angle of Magnetron mounting with reference to the waveguide An obstruction was added in the waveguide to change microwave emission pattern. Visible reduction in leakage tested with a Microwave leakage monitoring device A simulation proving the microwave leakage near the periphery of LID. The readings show 200mV which is well above the allowed leakage by certifications agencies.

Width and Volume of Pan - Pan acts as part of the microwave chamber

Gap between Lid and Pan upon closing Lid Dimensions of Choke

EM WAVE A N A LYS I S

The test report shows radiation exceeding the standard parameters with peak value at 272 MHz

CE CERTIFICATION

Radiated emission tests as per EN 55011 on On2Cook product inside Anachoic Chamber Facility at E.R.D.A Baroda Gujarat India

Key Check Induction

points of Cooker

If double layer heating coil for 1600 W, the gas distance should keep 10 mm exactly. ±0.5 mm. Now, we are not supplying this.

Assembly of PCBA with wire harness inside the product. Location is under the induction coil

Assembly of Induction Coil. Aluminium sheet was added to block EM fields from interfering with PCBA. Aluminium sheet was later removed as it blocked air flow to coil and made coil hot above 200°C. Coil should be < 180 degC

The gap distance adjustment by 2 ways : plastic pillar height by mould amendment, or put washer to increase the height (see right above red ring highlight) Ideal distance between Coil and Pan universal standard is 10-11mm.

Induction Assembly CAD Model.

After assembly IGBT bursted. Distance between coil and Pan is 11.5mm. Distance between Coil and PCBA 30mm.

CIRCUIT PROTECT

Placement of IGBT is above heat sink. NTCs are glued to the IGBT using Thermal glue to Monitor its temperature for soft shutdown

CIRCUIT PROTECT IC with reference designator U100, part no.

NCV5701A in schematic below added. It is afgate driver optocoupler to protect IGBT in case of Overvoltage conditions

Scanning lines flickering on display are visible as soon as Magnetron is soft switched ON using relays.

CIRCUIT PROTECT

Error codes of induction cooker as defined in datasheet of IC HT45F0059 from Holtek

E R R O R SOUNDS ON2COOK is a patented cooking device. Currently, I head the electronics team for ON2COOK India which just launched the fastest cooking device on the planet.

The device uses induction cooker and microwave combination cooking method. The faults in the device are logged are reported through a series of frequency tones. The tone itself is built using multiple sine waves, square waves and sawtooth waves.

For device quality check during production, we had temperature measurement logs for multiple points in the device. Each temperature value was being played though inbuilt speaker through a different timbre of sound - higher the frequency higher the temperatue.

Click here to watch video

Generation 1 Prototype, 3 UV LEDs and 2 White LEDs. Color Sensor : TCS34725, Light Sensor : SI1145.

D I G I TA L H A R D WA R E Generation 2 Prototype, 2 UV LEDs and 2 White LEDs. Color Sensor : TCS34725, Light Sensor : SI1145.

Color Sensor TCS3430 interfaces with ESP32 over i2C interface to give RGB values along with ambient light values.

Upon UV LED ON, the Ambient Light Values gives a threshold value for Fake notes Genuine Notes due to presence of high starch paper do not reflect UV light as blue visible light unlike Fake notes. Genuine notes absorb UV light and emit scattered Fluorescence.

Generation 3 Prototype, 1 UV LEDs and 1 White LEDs. Color Sensor : TCS3430 used to detect the visible blue light for fake note detection. Separate Light Sensor eliminated.

Volume increased by 6dB using integrated codec with amplifier IC MAX98357 uses i2S interface with ESP32 for audio file playing

Upon White LED on, the RGB values are used to identify Note Denomination

TANGIBLE COMPOSER F i l t e r

Sample / Instrument/ Sound Wave Attack Decay Sustain Release

Note + Sequencing 16 beat Tempo

Click here to watch video

A realm where every note, every sound wave, every rhythm leaves a tangible footprint in real time. music creation tool that intertwines the physical and auditory senses.

Creating patches with a synth often feels like walking in a dream-like state, where you arrive at a beautiful sound but struggle to retrace your intuitive steps.

The Tangible Composer solves this by materializing your creative journey, providing a physical blueprint of your musical decisions, allowing you to see the evolution of your ideas and easily recall the steps you’ve taken.

As you explore and experiment with the Tangible Composer, the sonic landscape you’re shaping also unfolds in front of your eyes. Each shift, each movement, each reconfiguration of the shapes echoes with a change in the music. This transparent and tangible process enhances your understanding of the musical components at play, improving your cognition through repeated, hands-on interaction.

I N F L ATA B L E

L AT E X T P U

F O A M

I N F L ATA B L E

SHELL

MATERIAL

CONNECTOR

EXPERIMENTS

MAGNETIC CONNECTION each with li-poly battery 100mAh no MCU, 555 Timer only Potentiometer Controlled Frequency signal output to LED or Speaker

MAGNETIC CONNECTION NO battery wireless power transfer through tx and rx coil no MCU, 555 Timer only Potentiometer Controlled Frequency signal output to LED or Speaker

Reduced size

Experiment to validate the maximum no. of chains of LEDs using wireless power transfer. Only 3 LEDs could get powered. 5V was dropped to 3V

Experiment to validate maximum no. of chainable balls with magnetic attraction

AUX CONNECTION Each module with led light, microphone, potentiometer, accelerometer, i2c to 4port adc expander

1

2

Main Controller and arrangement slider at the base

6

Tuning of sine wave with breath

7

Sequencing through branch tokens and their intervals.

Each sequencer token can be tuned over a fixed range by breath.

3

Addition of square wave to sine wave and tuning of square wave frequency

8

Patch ADSR to oscillators

4

5

Addition of sawtooth wave

Patching low pass filter to the previous oscillators

9

Arrange multiple tracks using potentiometer slider along horizontal

MAX MSP experiment to test how adding of multiple sine,square,sawtooth wave of different frequencies and along with ADSR can create a unique timbre.

Low Pass Filter Sequence

Sine wave

Square wave

A DSR

Sequence

Sawtooth wave Low Frequency Oscillator

All elements have same electronic components inside except sequence which is just an aux connector - male to female

HOME B E E R

BREWING

Mashing

Adding hops to boiling wort

Adding Yeast

Fermentation

Tasting Before fermenting Forced Carbonation

After fermenting

Counter Tap Filling Beer Clarity

Refractometer Brix reading

Storing of Yeast

SYNTH : CLOCK Experiments to reflect on uniqueness of each moment with sound.

Record Sample by pressing button

Record your own sample and let it play for days on time loop with each second sounding different.

Store sample

Real Time Clock

Modulate recorded sample based on real time

Read time shift hour

shift min

shift sec

i i i sample%hour sample%min sample%sec

Industrial age needed clocks to be efficient and precise. With the advent of AI age, humans would need clock to help them experience time better

add and calculated average sample position to be played Play Selected

Playnumber Sample andeach position second Sample

Click here to watch video

In synth mode, the interface of hours, minutes and seconds in a clock can also be rotated with hands to create interesting sound effects. Audio loops can play faster by moving the hour, minute or second stick faster.

Granular Synthesis of recorded sample - representation of a unique segment from the recorded sample played for the moment hh:mm:ss

CNC Timber Mould for Surface Press Final CNC Surface Press Second Timber mould CNC Timber Mould for Surface Press Final CNC Surface Press Second Timber mould CNC Timber Mould for Surface Press Final CNC Surface Press Second Timber mould

d

Cement-Sand Mix Cement-Sand Mix Cement-Sand Mix

d d

CCONCRETE SS I G N A G E

Correcting the details post pressing Correcting the details post pressing Correcting the details post pressing

Glow pigment test for night visiion Glow pigment test for night visiion Glow pigment test for night visiion

Press & Lift the CNC press

Open Mould

Sand the surface after curing

Lift CNC the CNC press Pourcement the cement & Lift&the press Pour the mix mix PressPress

Open Mould Open Mould

Sandthe thesurface surfaceafter after curing curing Sand

Pour the cement mix

Cutting and preparing the wall surface

Removing the side moulds and letting cure

Install Cement Nameplate

Apply 3 coats of paint after 2 weeks of curing

Plea

se

cl

i

ck

h

e er

!

3 6 0 EXHIBITION C A N V A S

___________

P

H

I

I

Plant Human Interaction Interface In the dance of existence, imagine a metamorphic object, a testament to the sublime coalescence of man and nature. Picture a vessel, borne of the wisdom of the ages, a plant pot that harmoniously transmutes into a bottle for human sustenance. This is not just an object, it is a confluence where our human needs and the realm of verdant flora intertwine.

In this interaction, we begin to perceive plants not as silent, passive bystanders but as crucial partners, silently echoing our own life’s journey. Every sip, every nourishing gulp, brings us closer to acknowledging this bond, enriching our relationship with the plant kingdom.

This vessel, an eloquent symbol of the symbiotic relationship we share with our green brethren, cradles the very essence of life within its contours. Nutrients that fuel our vitality, those magic potions of growth, are shared harmoniously between us and the

Click here to watch video

NUTRIENTS REQUIRED BY PLANTS

EXPERIMENT

NUTRIENTS REQUIRED BY HUMAN

C

S

Cu

Co

C

S

Cu

Co

H

Ca

Mn

Si

H

Ca

Mn

Si

O

Mg

Na

V

O

Mg

Na

V

N

Fe

Zn

Se

N

Fe

Zn

Se

P

Mo

Ni

P

Mo

Ni

I

K

B

Cl

K

B

Cl

To determine the optimum nutrient composition common for plants and humans

Ongoing Test for performance of the prepared nutrient mix compared to a readymade CityGreens nutrient mix

Prepared nutrient mix A+ B

Citygreens NPK Nutrient mix

N P

SE CO ND A RY M AC R ON U TR I E N T S

K Mg

Non-essential nutrients

10 ESSENTIAL COMMON PLANT-HUMAN NUTRITION AVAILABLE IN TABLET FORM FOR HUMANS

L- Arginine + Caffeine+ Nitric Oxide, L-Citruline DL Malate + L-Arginine Potassium Phosphate Monobasic, GABA (Gamma Amino Butyric Acid) + Pyridoxal-5-Phosphate Di-Potassium Phosphate Potassium Citrate Electrolyte Mix = Potassium Citrate + Sodium Citrate + Magnesium Aspartate, Magnesium Glycinate, Magnesium Oxide (Mg = 200mg/t) + Dicalcium Phosphate, Magnesium Citrate

Ca

Calcium Citrate Malate (C6H7O7) x·(C4H5O5)y·(Ca2+)z: 1000mg/ tablet; Mg: 75mg/Tablet, Zn:5mg, Cu:1mg, Mn:0.5mg, B:0.3mg

S

Methylsulfonylmethane (MSM), Glucosamine + Chondroitin & MSM Powder

Image of Basil plants on 20th day in the two nutrient solutions M I C R O N U T R I E N T S

MACRONUTRIENTS

Essential Nutrients

P

N

1/2 tablet of L-Arginine + Caffeine

Cl

Sodium Chloride Manganese Gluconate

Mn Nickel Sulphate

Ni Cu

Copper Bisglycinate, Copper Gluconate

Combined nutrient mix

310 gm pack of mono potassium phosphate

K

1 ml of dissolved solution

1.5 Ltr water 1 Ltr water

A 70 mg/L

1 Ltr water

B P = 70.38 g/L K = 87.6 g/L

P = 70.38 mg/L K = 87.6 mg/L

YOUTUBE JOCKEY

Imagine the vast musical library of the internet, each song and melody intertwining, harmonizing, and resonating in a symphony of human expression. A digital platform that lets you orchestrate an array of sounds and melodies from the most abundant music repository - YouTube. YouTube Jockey is not just a tool; it’s an instrument, a canvas, a stage where the global choir of YouTube sings together in harmony. With every added layer, a new perspective on the original is revealed, a new voice joins the chorus, a new flavor enriches the musical banquet.

Picture a user interface as intuitive as it is innovative, offering you the power to create a layered symphony of sound. Multiple screens play in unison, and each video adds a unique element to the performance. Adjust the play speed, shuffle between screens, and watch as the rhythms intertwine and melodies merge, building upon the original into something entirely new.

Currently working on adding a MIDI player that lets you switch screens , adjust the volume and pitch.