Learn how to make an interactive drawing using a bare conductive capacitive touchpad!
Let your inspiration come from Bob Rose, or pair your own art with sound and music with bare conductive ink and paint.
Welding is not required if you use ink as a "cold weld" or if you use crocodile clips.
However, you can make the project more durable by soldering the wires to the micro-controller and drawing front.
Upgrade your art and add another dimension.
Advanced users can add code on this board or write their own code using Arduino!
You need: Bob Ross tutorial online, make your painting first.
When choosing your design, think about what kind of sound you want.
For my painting, I want the famous words of "voice of nature" and Bob Ross.
I added animals (
Coyotes and birds)
So the sound will be more diverse.
I also chose an image with trees, water and mountains so that I could hear the sound of the wind, the sound of the leaves, the sound of the water, and so on.
I chose a design with black so that conductive ink would look natural in the painting.
I hope the audience can see clearly which part should be touched to reveal the sound.
However, according to the instructions, one can actually paint on black conductive paint/ink with acrylic paint and hide the touch points.
This is because it is a capacitive touch sensor and you are making more sensors than just completing the circuit.
You have 12 sounds on your bare conductive card.
It should be in MP3 format.
Again, re-mark your voice to match the following name: track 000 track 001 track 002 track 003 track 004 track 006 track 007 track 008 track 010 track 0
Tag your track: track 000 track 001. . .
Until: track 011, you can have 12 different tracks.
Upload them from your computer and reinsert them into the touchpad on the micro SD card.
The touchpad is pre-
Loaded the teaching track to help you complete your first project.
When you load your sound, when you receive a notification that it already exists, you overwrite the sound by clicking on the replace file.
To test the track, you can simply touch the large gold label on the board marked with the corresponding number.
Remember: every time you change something connected to the touch electrode, you need to click the "reset" button located in the corner opposite the power plug. This will re-
Calibration capacitance threshold.
This is a small gold and silver button.
Next, you want to test with a wire because that's how you spread different sounds in your painting.
There are three ways to do this, each of which improves durability and reliability. 1)
Clip the crocodile clip onto the large numbered label on the board and then touch the other end of the clip for testing.
This is considered temporary as the clip is easy to unlock.
However, it would be great if you need to make adjustments and don't need any welding.
Great for kids! 2)
Weld the solder on a row of heads to the board that reflects the small digital part of the large label. See photo.
This is also adjustable as the head will also keep the wires that are not welded.
So if different lengths, you can try different wires to make sure they reach the part where the sound is.
It is relatively safe and quite compact.
This is the way I end up using it. 3)
The third option is to weld the wire directly to the circuit board without a joint.
This is the best option if you plan to submit this microprocessor to this purpose.
It's still removable, but it's not as easy as Option 2.
Remember: every time you change something connected to the touch electrode, you need to click the "reset" button located in the corner opposite the power plug.
It's gold and silver.
In this photo, you can see that I added a line of title to the second line of input printed on the card.
This line corresponds to the large gold label, making your entire setup more compact and orderly.
Looking for symbols: E11, E10, E09, etc. . .
I recommend these titles (
Black things that stretch out from the blackboard)
Because while the wire you insert is adjustable, it is very reliable and does not fall off, nor does it allow the bare part of the wire to touch and trigger more than one sound.
You can also see that I wrote each sound on the back of the drawing so that I wouldn't be confused about which wire to go.
When your painting is finished, you have tested the bare conductive touchpad yourself with crocodile clips or wires, then it is time to connect the painting.
I do this first by choosing a durable board.
I made sure it was deep enough to fit my Mini Jambox speaker, touchpad and LiPo battery.
After I did my art, I drilled holes where I wanted.
The holes only need to be as wide as the wires you will be using.
You can also use nails and welding on the back of your nails.
Next, I remove 12 wires from the board to make sure they are the right length, and I pass them through the holes from the back so they can extend the holes to the front.
On the front of the painting I posted a small 1 cm x.
The paint surface next to each hole has 5 cm peice copper tape.
These are all there so I can weld each wire to the tape and make sure there is a good connection to the board.
The copper strip will eventually be invisible as it will be covered with bare conductive paint.
After the sound test is done and the wire is painted, you can put your conductive paint in front.
Remember: every time you change something connected to the touch electrode, you need to click the "reset" button located in the corner opposite the power plug. This will re-
Calibration capacitance threshold.
This is a gold and silver button.
You will draw on the small copper tape next to your drill, where the wires have been welded to the front.
If you want, you can just paint a little special paint on the spot.
However, I chose to expand the range you can touch and trigger the sound by drawing a clearer shape around each copper contact.
For example, you can touch anywhere on the coyote, and you will hear the Coyote even if the wires are only on the belly.
The mountain is the same, and the black conductive ink is applied to the shadow part of the mountain.
My image uses a lot of black, so in order to see more clearly that there are different sensors in different places, I plan to apply more colors on the normal black paint, leave only the conductive paint in black.
In this way, I can tell my viewers to touch the black part and they can see which parts are interactive more easily.
However, one of the cool features of this capacitive conductive ink sensor you are making is that you don't need to really touch the ink itself, you just need to be very close!
In fact, the company says that technically you can use color acrylic paint at each interaction point and completely cover where the sensor is located.
They also recommend that you apply the final varnish to your painting with painted enamel or polyurethane to protect the painting, as the oil on your hand may damage the surface of the painting, of course, A lot of people will move your paintings!
Here are some links to learn how capacitive touch works.
FYI that's how your iPad and iPhone work, and yes, it does use electricity on your skin!
Very interesting.
How can you use it as a sample of a song!
Hide your sensor the way I hide it in black paint, or a specific button indicated in color.
Naked conductive says you can apply any color to their conductive ink and paint with acrylic paint.
They also recommend painting with painted enamel or other finishes.
This still works because the board is measuring the capacitance and is still able to trigger the sound, more like a sensor that simply completes the circuit.
Can't wait to see what people have created with this tutorial!
Watch this video on Youtube and watch my paintings work!