Circuit Scribe Pen. Marker Pen With Conductive Ink

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Circuit Scribe is a rollerball pen that writes with conductive silver ink. It makes creating circuits as easy as doodling
Marker pen with conductive ink allowing the user to draw electrical circuits

Circuit Scribe: Draw Circuits Instantly
No shaking, no squeezing, no goop, no smell, no waiting for ink to dry. Circuit Scribe draws smooth lines with conductive silver ink and allows you to create functioning circuits instantly.

• Circuit Scribe is for Makers of all ages and skill sets
• Circuit Scribe was made for project based learning.  Kids can build circuits and switches in their notebooks and use those concepts to get creative!
• You can build a circuit with nothing but a coin battery, paper clip, and LED, or build out complex circuits with multiple components
• Draw your circuits, cut them out, and stuff them into your inventions - instant robot guts
• Breadboards add a level of abstraction and annoyance to circuit building.  With Circuit Scribe you can draw exactly what you want, no wires or breadboard required
• You can use Circuit Scribe with Arduino, Makey Makey, and many other electronic platforms

Source: kickstarter

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SILVER INK CIRCUIT PEN by AgCI - Future with bright lights
This video uses a silver ink circuit pen developed by AgIC Inc. (AgIC has been developing products with silver conductive inks and technology to print circuits, using a regular inkjet printer and cartridges with the silver conductive ink).
- Meaning of AgIC: Ag is the chemical symbol of silver and IC means Ink Circuit.

The video was created by the Japanese company Kandenko, combining elements of technology and art to depict how each individual can illuminate the future.

Draw circuits
Circuit Marker lets you draw electric circuits quickly and easily. Start drawing circuits and enjoy learning instantly.
Edit circuits with Circuit Eraser
AgIC Circuit Eraser is also a marker, but it erases traces of the AgIC ink easily. Draw again with the Circuit Marker. You can erase a same area up to three times.
Only works with AgIC paper or film
#1000 ink makes a chemical reaction with the coating of our substrates. Circuit Marker does not work with other materials.
Dry instantly in several seconds
Easy to use for all ages.
Draw up to 40 meters
A marker draws 100–150 A6 sheets with a simple circuit.

Circuit Marker - The pen that draws electricity
Draw circuits easily. Patterns on Circuit Paper or Circuit PET Film become conductive in seconds.

Test its versatility and look at the ways this can be used for education:

More information is available at https://agic.cc/en/education

Print out flexible circuits
Fill ink tanks with AgIC ink and print out circuits

More information is available at https://agic.cc/en/industrial/ink-kit