Arduino Spectrum Analyzer | 16x32 RGB LED-matrix

Open for more information. Our latest project : https://www.youtube.com/watch?v=sXsGklZT-80. 0:00 - 3:00 = Music connected 3:00 - 3:42 = Frequency generator connected 3:42 - 4:01 = Pictures Hello My brother and I build this spectrum analyzer using a 16x32 Adafruit LED-matrix and an Arduino Uno. We build this project in our first year of uni. It has 4 different display modes: -Blue -Red -Green;Yellow;Red -Purple to Blue Sample frequency = 9600Hz Number of samples = 128 Fundamental frequency = 75Hz We used an audio splitter so one side goes from the Ipod to the microcontroller (Arduino Uno). Processing the signal and displaying it on the LED-matrix. The second signal goes to earphones. That's why it's so silent... If we wanted to use speakers, there wasn't anything left of the audio signal to go to the Arduino Uno. We could fix this with an opamp though. Used components : -Arduino Uno -Arduino Shield -Adafruit 16x32 LED-matrix -External supply -Resistors -Capacitors -LM7805 -Shmitt-trigger -Push buttons -Audio input jack -Audio splitter -Header pin -Plexiglass (perspex) -Bolts and nuts Song : Vengaboys - To Brazil https://www.youtube.com/watch?v=UQ6LG... http://www.vengaboys.com http://www.twitter.com/vengaboys http://www.facebook.com/vengaboys http://instagram.com/vengaboys Our latest project : https://www.youtube.com/watch?v=sXsGk... 16x32 LED-matrix penal was bought at http://www.adafruit.com/products/420 Song choice is pretty obvious right? Cooooooooome ooooooooon Red Devils!