Download - Circuit scriber
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FEELING BORED WITH BREAD BOARDS AND GHOST LOOKING WIRES????
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EVER THOUGHT TO GET RID OF THAT????
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BYP.SAI KAMAL10BA1A04434th year ECE
CIRCUIT SCRIBE
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OVERVIEW: HISTORY EXISTING ONE PROPOSED ONE CONDUCTING INK WHY SILVER? INGREDIENTS EQUIPMENTS PROCESS PENS PROS CONS CONCLUSION
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HISTORY
Inventor of circuit scribe
Director of STEM outreach
Multiple tools for low cost ,high quality electronics.
Co-founder
2nd place in national collegiate competition
ANALISSA RUSSO
BRETT WALKER
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Breadboard- Clumsiness
Vero board- Unreliable
PCB-fixed circuits
EXISTING ONE
Bread board
Printed circuit board
Vero board
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PROPOSED ONE:
Roller ball pen with conductive silver inkAs easy as doodling
CIRCUIT SCRIBE
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CONDUCTING INK
Results in printed object which conducts electricityClassed as fixed high solid systems or PTF polymer
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Why SILVER???
Generally any conductor – 10^18 to 10^23 atoms /unit cell
Ag-(+1)Cu-(+2)Au-(+2)Al - (+3)
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IS THAT EASY TO PREPARE THE CONDUCTING INK???
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INGREDIENTSCommon solvents- Water Ethanol Methanol
Metal Precusor - Silver Nitrate Capping agent - Poly acrylic acid
Binder - Hydroxy Ethyl
Reducing agent - Diethanol amine
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EQUIPMENTSBeakers and flasks
Stir plate
Centrifuge
Homogenizing mixer
Heated sonic bath
Syringe and filter
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PROCESS20g Agno3 into water +1.915g of PAA + 40g
DEA
Sonicate for 1.5hrs at 65degrees+300ml
ethanol
Centrifugation (9000 rpm,20 minutes)
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PROCESS
HEC in 1:1 H2o methanol homogenizing
mixer(3min 2000rpm)
Ready
Filter the obtained solution
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2 types 1.Standard- CW2200STP-avg of 2mm width2.Micro – bit difficult to handle
PENS
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PROS
STEM Education
Low cost high quality electronics
Flexible electronics
Lifetime working capacity
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CONSKeep out of reach of children
Cost is bit high/pen
Can’t erase once drawn
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CIRCUIT DESIGNSMAKEY MAKEY PLATFORMINVITATION CARDSFASHION MEHENDISMALL PROTOTYPES
APPLICATIONS
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FUTURE SCOPEYet to design inductors, capacitors.Replaces all the discrete
components.
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CONCLUSIONEach technology has its own pace of
development. Future promises us more.
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REFERENCES
http://laughingsquid.com/circuit-scribe-a-pen-for-drawing-electrical-circuits-with-conductive-ink/
https://www.kickstarter.com/projects/electroninks/circuit-scribe-draw-circuits-instantly/?ref=kicktraq
http://en.wikipedia.org/wiki/Conductive_ink
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QUERIES
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