Circuit Scribe lets you draw circuits instantly! This is a rollerball pen filled with specially formulated conductive ink that dries instantly. We also have numerous circuitry components available that make this a great prototyping and STEM education tool.
The Lite Kit comes with everything you need to get started with Circuit Scribe:
The Basic Kit contains a Circuit Scribe pen, six modules, a 9V Battery and other accessories to improve your circuit drawing experiences (see below for full list). This kit allows you to explore basic electronics concepts, beyond what the Lite Kit offers. The five additional modules allow you to expand your knowledge of transistors, resistance, elements in parallel and series, open and short circuits, and more.
The Maker Kit contains a pen, eleven modules, a 9V Battery and other accessories to improve your circuit drawing experience (see below for full list). This kit allows you to explore all the concepts that the basic kit presents, while improving your understanding of different ways to input, process and output signals in your circuits. Additional topics to explore include light, timed circuits, piezoelectric materials, and more.
The Ultimate Kit contains everything you need to create dynamic and fun paper circuits. The Ultimate Kit features 10x magnetic connection cables let you hook up your paper circuits to programable platforms like Arduino. (Arduino not included.) The kit includes everything from our Maker Kit plus extra LEDs, two DPDT switches, and a motor (see below for full list). With the Ultimate Kit, you can make complex, robust circuits while still using our accessible Circuit Scribe technology.
The Basic Classroom Kit comes with 10 ofthe Basic Kits (including 10 Circuit Scribe Conductive Ink Pens) and a copy of the Education Workbook. This kit will provide basic, fun electronics projects for a classroom of up to 30 students.
vimeo: 108956292 See the Circuit Scribe Virtual Editor & Simulator on 123D Circuits.
Circuit Scribe is created by Electroninks, a Champaign, IL company that works with conductive ink projects. Circuit Scribe funded on Kickstarter on December 31, 2013 and are now taking pre-orders on Crowd Supply.
An unopened pen has a shelf life of about a year, we’re optimizing the ink to try to make it last longer. Once it’s opened the pen will write smooth for at least 6 months, after that it may dry out a bit, but you can wet the tip of the pen to get the ink flowing again. Tips to make it last longer: Keep the cap. Store it tip down. Keep it away from hot dry environments.
We drew traces three years ago that still work today.
You can draw 60-80m (196-260 ft) worth of lines with 1 Circuit Scribe.
Not right now. We are looking into producing a Circuit Scribe Pro, which would be a metal pen with refillable cartridges. The Circuit Scribe Pro’s would be in the $125-$150 range. If you would be interested in a Pro, message us and let us know!
This ink is optimized for use in rollerball pens. We do make inkjet printable inks and may have an ink to suit your needs. Please message us for more info.
Regular printer paper and photo paper work really well. Photo paper works well because it has a smooth texture and the ink can form a continuous film on top of the paper. On more porous papers like card stock, the ink sinks in and doesn’t perform as well.
The ink can support a maximum current of about 175 mA on standard copy paper. Higher currents cause joule heating and a subsequent drop in resistance due to sintering the particles (up to around 8x decrease in resistance if controlled). Currents exceeding 400 mA may break the trace on standard copy paper. High currents can be achieved with photo paper, near 800mA.
The maximum voltage depends on the distance of your ground and high voltage (HV) trace. You should also consider the distance the magnetic backing is to the paper (i.e. keep it well-insulated with multiple sheets of paper). We do not recommend using high voltages (above 36V) due to safety.
The ink is optimized for paper. We haven’t had great results on fabric. The ink coats the fabric fibers, but can’t really bridge between them to form a continuous conductive line. It may be possible on some fabrics (especially with a tight weave) if you draw over the same line several times.
The ink formula is made for a gel rollerball pen, and a quick test to see if you can use this on a PCB solder mask or any surface is to see if your generic rollerball pen will write first.
The ink itself will stick to a solder mask and bare fiberglass (like FR4), but dispensing the ink is another issue. The slick surface of the solder mask/fiberglass prevents the rollerball in the pen tip from turning, thus no ink will come out. Try using your standard black/blue/red/green rollerball pen and you’ll see the same issue. Our pen was designed for paper use, but we may look into other formats of the pen post-Kickstarter.
The workbook is geared towards teaching a fundamental understanding of electronics (including the concept of electrical conductivity) and provides simple examples of how to use each component in the Basic and Maker kits. The book will also provide ideas on integrating the components into creative doodles and sketches.