They say music is a universal language, so we made a littleBits circuit that demonstrates how it possible to play music from Earth on the International Space Station. NASA uses electromagnetic waves to communicate with satellites orbiting Earth. Our miniature version of the ISS wirelessly receives sound data through light.
How Does It Work?
A microphone module converts the digitized music from an MP3 player into a series of light wave pulses through an IR LED. These light pulses are decoded by a light sensor on the ISS, and converted to sound waves by a speaker module.
You can also build a desktop experimental model using either a bright LED or an IR LED for different effects.
What happens when you move the light Bit further away from the Light Sensor? What happens if you block the Light Sensor with your hand? What if you use a thin sheet of tissue paper? How does that affect the digital signal?
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.