Turn a pencil drawing into a capacitive sensor for Arduino

Step 4: Test it!

You may need to make some changes at the top of the code to get the correct cutoff value for your particular drawing, and you may need to go and re-trace over your drawing some more to get the parts of your drawing that are further away to work properly.

Once you get it working, you can take some clear tape and cover up your drawing - this will decrease its sensitivity a bit, but it will keep your drawing from smudging as people touch it.

I've put together a full video game controller with this as part of the UnoJoy project, and there will be a video over at unojoy.tumblr.com in a couple of days.

Comments

[styleatjoe]

for more than one sensors on paper please hint the coding..

[alan.chatham]

The sample code here has a function, readCapacitivePin(int pinToMeasure)

If you put in different values for that, like

int firstSensor = readCapacitivePin(2);
int secondSensor = readCapacitivePin(3);

you can read whatever Arduino pins you want, as many as you'd like.