First refined version of shape 4. The outer shell has been sanded ready to be cast (as a test). And some test prints in PLA of the inner part that holds the power bank and circuit board. The first version of this is not deep enough and the screw holes are a little too close to the edge of the print.
Small (45mm) 3D printed Space Rocks, that glow in the dark.
Looking at ways to make the Space Rock shapes less rigid / more flexible.
A small test, mould-making from the lumpy Space Rocks created using Meshmixer, plus the resulting Jesmonite cast.
The tiny audio speakers have arrived. I didn’t realise they would be so small. They are 2W 8 Ohm and 23mm in diameter. And also a little bit quiet.
Some photos from today’s demo show of work-in-progress for We Are Here. Including one working Arduino prototype with sound generator.
Managed to get the XBees talking to each other, following these steps. The video shows two completely unconnnected Arduino circuits. The one on the right (coordinator) sends the reading from the potentiometer to fade the light on the board on the left (receiver).
Configuring the XBees.
Am using the Digi XBee wireless connectivity kit to allow the Space Rocks to communicate with each other. Following the tutorials on Sparkfun, I have managed to get them talking via X-CTU. Which is a good start.
And these two are also now communicating with each other.
And inside the plastic shells, at a distance of about 5 feet apart.
“A piezo creates a varying voltage when you squeeze it. [We’ll] use it as a sensor by measuring the voltage the piezo produces across a 1 megaOhm resistor…Notice it has a very fast response, especially a sharp attack and decay when it’s knocked.”
This first test was changing the frequency as the piezo was scraped and touched.
And the audio version:
Piezo sample trigger (& speed)
Piezo sample scrub
And finally an example of an external speaker circuit. Will need to work on the output level for this.
A video showing an Arduino Nano running the Mozzi library, which allows sounds generated from sensors. This uses the LDR + resistor as input to Analog Pins A1 + A2, and using the code from Arduino➞File➞Examples➞Mozzi➞03.Sensors➞Knob_LightLevel_x2_FMsynth
And here’s the attendant audio.