Drum tutor

Tell me about drum project. Okay, so For our final project we decided to do a teaching tool for taiko drums. Taiko drums is a Japanese style of drumming and This idea came about because I'm part of a Japanese group and every year when we get new recruits One of the things that we mostly focus at the beginning is to have everyone Be able to play on sync with everyone else be able to play on time So the project that we did is a teaching tool for taiko drumming and It's supposed to have a bunch of different modes To help with teaching keeping you on time Making sure that everyone's playing at the same time and so you can also practice your beats So yeah, so we have these boards that we clip on to each one of the drums. We have the main board that is Velcroed onto the drum and then the sensors clipped on to it. So these are piezo sensors on here Yeah so we have two different piezo sensors on each drum and basically the whole bottom plate vibrates with the drum and Basically gives us the voltage signals that we need they go into this board into two separate filters Each one goes into its own filter one of the filters has a larger has a larger capacitor which Kind of gets rid of a lot of the fluctuation after the initial beat because we want to try and get rid of the you know extra beats after a certain amount of time You know simple op amp here We have three different push buttons one changes the mode which you can see which mode you're in by the seven segment display There's a start stop button. And then we also have a reset button. Okay, so the set of five LEDs right here This kind of tells you the speed that you're going at In different modes so if I'm like playing at the direct speed at the like at the exact same speed as another drummer like this blue LED will Be lit if I'm going a little bit slow like a little bit slow this one lights and then this one lights if I'm really Lacking behind and likewise with the opposite end if we're going faster, okay These three LEDs tell us what the beat types actually are. So for a soft hit This one would light up for a loud hit But this red one would light up and then a rim shot this one would light up and they're not lighting up now because Right. Sorry. Yeah, this is not we're saving battery power right now. All right and Seven second display driver at the board and then over here. This is where we have the IR emit emitters and receiver Which communicates with the other drums that have this exact same set up So each of the other drums then has the same infrared transceiver and you and you made you fabbed all of the circuit boards, right? Yeah, correct on the circuit board So if we come back and look at all three see if I can get all three and all three boards are completely identical Okay The software each mode has its independent function as well as there are functions for Getting a beat and an ISR that basically samples every time the piezo to check for a beat So basically the there's a get beat function that returns whenever there is an event which is either a beat When someone beats here or a button press As to teach to tweak the cases of dip switches whenever you want to change the switch You just need to reset the dip switch will set you the initial mode It's all done with the Omega 1284 microcontroller Okay, let's see a demo yeah, so So we have our scones right here. We have Five modes we're gonna take you through we're gonna calibrate the drum for now So each each drum is a little different, you know based on size or how tight the drum head is So we made a mode where you can help distinguish between the three types of hits. So I'm always zero that's our calibrate mode and We have a green light that means hit a soft hit hit another one and then it wants two rim shots So that means we're ready, we're all calibrated and to test our calibration we're gonna go to mode four Which is just like a free play mode to test that our calibration worked Like Adam said we have green LED is signifying soft hits There's our rim shots and then Our hard hits signify and red And it's every time you reset the board, you know, if you want to calibrate it All the primers get reset. So we're probably gonna calibrate each one before we give you an overall demo. Okay So yeah, so you just saw calibrate mode and then freebie mode, which just tells you which to can be typed So I'm gonna go ahead and switch over to mode two, which is metronome mode So, you know how most metronomes work? You set them manually via like analog or digital means to the correct like beat per second that you want We kind of take a different spin on it where we really set our own tempos with beat per second Set our own tempos with beating so so basically I'm green go ahead to start beating so I can be at any tempo I want If I hit start stop so you'll see what it does is it averages the times the average the the Delta time between each hit and it takes all those Delta T's and Over all of them to make it to make it now. It's gonna be to give us our steady metronome beat Yeah, so this is it's really great You know for you know, people wanting to keep steady beat again look at it for visual confirmation and you know So they know the speed that they're going up. Okay, and then the next mode that we're gonna show you is mode three which we'll call the repeat after me mode and this is This sort of a Simon Says type of deal where I will play some type of hit and then I'll try to play against myself And it'll tell me how consistent I am With that beat so if I play just straight notes and then I repeat those three notes It'll tell me if I'm going too fast or too slow with the five on board LED So right now I'm on mode three and I'm just gonna do a simple four note hits Right, so it told me that I had played four loud hits and now if I start I'm gonna try to play that and these five LEDs will tell me whether I'm on beat or whether I'm off. Let's see So Right now we got some the the first yellow came in which says that I'm playing just just a little slow Yeah, just a little bit too fast or just too slow, right? So then I can I Play just one note and then miss for completely forget all the other ones. It'll continue to blink According to what I played before right? So it's just repeating the pattern that I did So if I forget what I played I can just hit Watch the LED and then I can remember what the B is supposed to be. Okay, so that's pretty basically what? repeat after me does Which is mode one For mode one, basically, the first thing you must check is the ID of the board the leader board, which is this one has ID 0 So in case of the leader, it will transmit through IR the information to the other boards The other boards they can have any ID which is not a 0 So in this case we have when you turn on you see the ID 2 Then it goes to mode 0. So you basically go to mode 1 to be a student. You can't have multiple Users at the same time. There are students. You do not want multiple leaders at the same time and So when when you beat it will receive the IR information And we'll display is the same model as the follows as the repeat after me Okay, basically we'll show you how the lane you are. Okay, hit it So right now Gabe is our leader and as you see we have the two students pointing their IR emitters at the leader and also the IRS are pretty decent width So like they don't have to always be exactly facing each other We found that we've turned the IR emitters at completely in opposite directions and we still scattering off the walls. That's quite a lot It's impressive So you're just gonna give us like a constant beat Yeah, hold on just a minute so when so when everything is right when you are on the beat your blue lights light up If you're early you get a green and if you're late you get a yellow and if they miss it They all light up like his is right. Okay, so it's right here. He's not playing. They all lit up in his truck Gotcha, you know, I'm gonna follow the lights now I'm gonna go to each one of these so you drum again and you follow I'm gonna follow your light first and then go to There All Right, so I could see that was a good example because you were playing too fast too slow Then you play it the right rhythm and the and the blue light came on very nice