This document discusses Circuit Scribe, a pen that uses conductive silver ink to draw electronic circuits. Circuit Scribe aims to provide an easy way to create circuits without breadboards, wire, or soldering. The document outlines the history of Circuit Scribe, existing circuit building methods like breadboards and printed circuit boards, and how Circuit Scribe works. It describes the conductive ink used, including its ingredients and production process. Potential applications and pros and cons of Circuit Scribe are also mentioned.

1. FEELING BORED WITH BREAD
BOARDS AND GHOST LOOKING
WIRES????

2. EVER THOUGHT TO GET
RID OF THAT????

3. BY
P.SAI KAMAL
10BA1A0443
4th year ECE
CIRCUIT SCRIBE

4. OVERVIEW:
 HISTORY
 EXISTING ONE
 PROPOSED ONE
 CONDUCTING INK
 WHY SILVER?
 INGREDIENTS
 EQUIPMENTS
 PROCESS
 PENS
 PROS
 CONS
 CONCLUSION

5. 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
BRETTWALKER

6.  Breadboard- Clumsiness
 Vero board- Unreliable
 PCB-fixed circuits
EXISTING ONE
Bread board
Printed circuit board
Vero board

7. PROPOSED ONE:
Roller ball pen with conductive silver ink
As easy as doodling
CIRCUIT SCRIBE

8. CONDUCTING INK
Results in printed object which conducts
electricity
Classed as fixed high solid systems or PTF
polymer

9. Why SILVER???
Generally any conductor – 10^18 to
10^23 atoms /unit cell
Ag-(+1)
Cu-(+2)
Au-(+2)
Al - (+3)

10. IS THAT EASYTO PREPARE
THE CONDUCTING INK???

11. INGREDIENTS
Common solvents-Water
Ethanol
Methanol
Metal Precusor - Silver Nitrate
Capping agent - Poly acrylic acid
Binder - Hydroxy Ethyl
Reducing agent - Diethanol amine

12. EQUIPMENTS
Beakers and flasks
Stir plate
Centrifuge
Homogenizing mixer
Heated sonic bath
Syringe and filter

13. PROCESS
20g Agno3 into water +1.915g
of PAA + 40g DEA
Sonicate for 1.5hrs at
65degrees+300ml ethanol
Centrifugation (9000 rpm,20
minutes)

14. PROCESS
HEC in 1:1 H2o methanol 
homogenizing mixer(3min
2000rpm)
Ready
Filter the obtained solution

15. 2 types
1.Standard- CW2200STP-avg of 2mm width
2.Micro – bit difficult to handle
PENS

16. PROS
 STEM Education
Low cost high quality electronics
Flexible electronics
Lifetime working capacity

17. CONS
Keep out of reach of children
Cost is bit high/pen
Can’t erase once drawn

18. CIRCUIT DESIGNS
MAKEY MAKEY PLATFORM
INVITATION CARDS
FASHION MEHENDI
SMALL PROTOTYPES
APPLICATIONS

19. FUTURE SCOPE
 Yet to design inductors, capacitors.
 Replaces all the discrete components.

20. CONCLUSION
 Each technology has its own pace of
development.
 Future promises us more.

21. REFERENCES
 http://laughingsquid.com/circuit-scribe-a-
pen-for-drawing-electrical-circuits-with-
conductive-ink/
 https://www.kickstarter.com/projects/electro
ninks/circuit-scribe-draw-circuits-
instantly/?ref=kicktraq
 http://en.wikipedia.org/wiki/Conductive_ink

22. QUERIES