fun with conductive ink!

codeviper

I got a conductive ink PEN....... what to do?
well i painted some lines on glass and presto secure glass plug a MCU to monitor the continuity of the conductive ink line some one breacks the glass there you go!
any one else got a good ideal? i am using an old computer for this untill my new props come.

if you want to do what i did
pick your fav micro write code to monitor a pin
the input pin should be tied high and then conected to one end of the line the other end to ground
connect a buzzer or speaker too and make a real alarm
i know simple......... but fun!

SRLM

I wonder if the conductivity of the ink fades over time and becomes an insulator?

Duane Degn

I wonder if you could draw touch pads on a desk and use them like the QuickStart's touch pads?

Draw some lines on a hard floor to use a spill/leak detector?

Use a coin cell and LED to make greeting card that lights up without having any wires running through/across the card? You might be able to make a switch the turns on when the card is closed but I think switching on the LED when the card is opened would be a trick. Maybe a "pop-up" style mechanism that slides one piece of paper over another as the card is opened. The sliding piece of paper would have a conductive ink section that would close the circuit on the rest of the card.

I think I have a conductive pen somewhere. I'll need to dig it out and see if it still works.

Gareth

Paint two large plates of glass and slip an insulating layer between then ..... Hey presto a capacitor ..... of unknown pf........
On the same lines :- use them as capacitive plate switches

Humanoido

I'm thinking about painting a point spot array
and use an electromagnet to energize it
and as it moves around, it comes into proximity
with a Hall Effect sensor which detects positions
and can switch on and off certain tasks. You could
etch a Hall disk to play musical notes. Unlike
optical CDs, the disk would be less sensitive
to dirt or scratches.