doctorow at November 22nd, 2013 00:26 — #1
logruszed at November 22nd, 2013 01:02 — #2
Stole the idea from L. Ron in Battlefield Earth.
thecorrectline at November 22nd, 2013 01:24 — #3
I thought that too!
But on a more serious note, $30 for the basic / $50 for the "makers" kit is a nice deal and an awesome gift. I wish they were shipping by Christmas but I'll go ahead and send a couple of their gift certificates out to help push them (hopefully way) over target.
sockdoll at November 22nd, 2013 01:49 — #4
I don't personally see it as completely replacing breadboarding for circuit prototyping, but I'd be interested in seeing what people come up with once the product gets into enough hands.
Also, I wonder if the graphite in a thick soft pencil lead would be conductive enough to do something like this. There's also old-school silverpoint drawing where you just pop a length of .999 or sterling silver wire (preferably annealed dead soft) into a lead holder to make drawings. They don't really lay down a heavy line though.
Cool idea for the pen though.
tomchaps at November 22nd, 2013 01:58 — #5
I've played with conductive ink pens before--gloopier than this rollerball, admittedly--and while they're a blast for all sorts of projects, they aren't going to replace breadboards for prototyping.
immutable_mike at November 22nd, 2013 02:49 — #6
I'm hanging out for the version where you draw the symbols for components that then work. That ways I'll be able to draw batteries and never have to buy them again!
renoun at November 22nd, 2013 02:52 — #7
What differentiates this from the other conductive pens on the market? I wonder if this is really Kickstarter material if one can buy a comparable product at Radio Snack.
vonbobo at November 22nd, 2013 02:59 — #8
takashioomoto at November 22nd, 2013 03:20 — #9
Well, it's conductive enough for the "lit a lamp" experience, but the resistance is pretty high, so nothing that demands proper voltage will work. Old electronics magazines often suggested making makeshift resistors by scratching some pencil graphite on paper and using paper clips as connectors.
thecorrectline at November 22nd, 2013 04:01 — #10
No, I don't either and nor should it, but I hope this can be a gateway toy with mass appeal - I think this has the real potential for some EE genius to look back years from now and think about how they got started.
lemoutan at November 22nd, 2013 05:39 — #11
Now that's just silly. They'd just make you pay for the battery symbol.
twerpy at November 22nd, 2013 06:09 — #12
This, plus the LED Stickers. Best. Notebook doodles. Ever. Just imagine what Vi Hart could do with this...
heng at November 22nd, 2013 06:31 — #13
One could draw passive RF components with this pen. That's what I immediately thought of when I saw it - I did quite a bit of work in antenna R&D in which we wanted to try several different tweaks on a design. It was a pain waiting for the PCB to be fabricated every time we wanted a new tweak. With such a pen and a good pen plotter, it would be possible to bash out precise designs in no time. The only difficulty would be adhesion to a known dielectric board (anyone know the dielectric constant of paper?).
space_monkey at November 22nd, 2013 07:08 — #14
In theory, a capacitor symbol should be a capacitor, but you'd probably have to make the lines too close together for it to be practical.
coop at November 22nd, 2013 08:29 — #15
Looks cool. If you're interested, there's a similar product made by Bare Conductive in the UK. They have a related kickstarter going on for a "touchboard" that integrates their paint/rollerpen product with external sensors and actuators. Rather cool...
I've no relationship, etc, just thought it was a neat idea.
howaboutthis at November 22nd, 2013 08:53 — #16
IIRC, Forrest Mims III built a circuit using on the back of a business card using SMT chips and drawing the traces with a pencil. It was just a simple demonstration circuit, nothing complex, but it worked.
brickgun at November 22nd, 2013 10:36 — #17
Brought to you by The Houston Energy Corporation and their spokesman, Jonathan E.
decoyduck668 at November 22nd, 2013 11:13 — #18
nice one! also, the resistor "zig-zag" would be a resistor if you made it long enough (this ink has about 1ohm per cm if i remember correctly).
jeff_duran at November 22nd, 2013 11:15 — #19
s2redux at November 22nd, 2013 13:05 — #20
There's better and worse at Radio Shack. This "silver acrylic" goop for $23 ($16.50 from others) is fairly heavy-duty, but twitchy to handle -- shake it all the time, dry it under a light bulb for 20 min., sometimes use a mask(ing tape) to constrain flow. But, excellent characteristics, such as resistance < 0.017 ohms/mil^2. I've put 10 amps through it in a car.
The 'Shack also has this $10 "silver paint", which is great for fabric/paper, but not much else. Not heavy duty, twitchy to use, short shelf life, but it washes out; fun for kids.
Neither of these is really a "pen" though, nor are they fast-drying, which makes this KS project look interesting.
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