We made a talking poster with Bare Conductive paint and touch board today:
The poster on the wall next to Simon’s room:
This is how we made it. We taped a stencil to a large sheet of white paper and applied the conductive paint, then waited for the paint to dry.
While waiting, we loaded several mp3 files on to the MicroSD card that came with the touch board. Simon made sure the files were named in the right order, to correspond to the correct electrodes on the touch board. We found the sound files at FreeSound.org:
Simon placed the MiscroSD back into the touch board:
We carefully removed the stencil, this was the result:
We attached the touch board and the speaker to the poster, then cold soldered the holes in the electrodes with conductive paint.
Let it dry and turn the power on!
Simon loves the conductive paint. After we finished making the Bare Conductive Voltage Village kit (previous post), he made two circuits, parallel and series, on his own without and help on my behalf. He did use weak AAA batteries first, so it didn’t work. When I told him he should switch to the 9V batteries, his circuits started to shine!
This is Simon’s parallel circuit:
And this is a series circuit:
On Sunday Simon found a Bare Conductive electric paint set in his shoe. Sinterklaas knows exactly what Simon wants! Today we tried cold soldering for the first time! The project involved building a paper house that would gradually light up as it gets darker in the room.
Besides the light sensor (or a Light Dependent Resistor), the circle also incorporated a transistor, a resistor and two LEDs.
It was quite difficult to keep all the components in place while the electric paint was still wet.
The waiting was enduring.
Tried blowing on the paint to make it dry:
Finally, the fun part: drawing the circuit:
The roof of the house on the inside:
Simon loved the effect of the gradual lighting up – when first placed in a dark room we saw almost no light but when we came back a couple hours later the house looked magical. Simon cuddled with it, took the roof off and reviewed the circuit again and again, and put the house next to his bed when falling asleep. I think we’d want to crawl inside of it if he could.