‫Welcome to the microphone interface demonstration with the ARDE development board for this demonstration
‫we're using the microphone break breakout poured from out of fruit and we haven't connected on the external
‫bread board where there's three pins on the microphone.
‫We have an out ground in our BCSC.
‫The out is the output from the microphone which is an analog signal.
‫And we are feeding the output of the microphone into the zero input on the already developed the board
‫of the chip kit or Arduino Petters.
‫We also have the ground and the DCC.
‫The ground is tied to ground which we have then running back into the ground on the JPM on port and
‫the VCC which is 3.3 volts we have doing the same thing or running that to the 3.3 volts on the JPM
‫on port and for this we also have what we're using one slide switch the reset.
‫Right now we currently have to reset.
‫So nothing's happening.
‫But as soon as I pull it out to reset what's going to happen is my my my voice or the sound waves that
‫are produced from my voice.
‫Well go into the microphone and the microphone will take and oscillate them and produce an analog output
‫based on the frequency and the volume of my voice and the analog signal will then come into our FPGA
‫board or the ADC chip is going to read through an analog to digital conversion and then the delay we
‫have in there is going to sample those rates at 40 kilohertz.
‫So anything we can hear any frequencies that we can hear should show up on these Ltd's and what you
‫notice is as I talk you kind of see the ladies dance or light up in accordance with the way that I'm
‫talking so I'm going to go ahead and enable the switch.
‫So now as I'm talking you can see that the Ltd's blink like whenever you hear my voice you see the OTS
‫turn on and if I don't talk which I won't hear in a minute and see the ladies all turn on now if I talk
‫really while you can just barely hear them blink on and off if I talk louder you'll see that they go
‫up a little higher.
‫And what am I to show you is you can do what's really cool about this is you can kind of synchronize
‫this to music.
‫So here we go play a little music into the microphone and you'll see the ladies live up to it.
‫So that's pretty cool.
‫That's a way if you ever see like in a dance club or any type of nightclub or anywhere else you're at
‫and you see it is like lighting up and you're wondering how do they make it happen to them.
‫To the music.
‫Well this is one way to do it.
‫You can just take a microphone simple and a microphone read those signals and then just display them
‫on LSD and they will flash really quick so it looks really cool and that's you can do is say Christmas
‫lights I'd be a great example for this.
‫We're only using that eight ideas that are on the board here.
‫But you could string a whole and a whole strand of Elodie Christmas lights and do the same exact thing.
‫And that is the microphone demonstration running on the already development board.