The Ultimate Raspberry Pi Project

hello guys I am Paul McWhorter from top tech boy comm and I'm chase Mertz from El Dorado high school and today we're going to show you the ultimate Raspberry Pi project we will be showing you our Raspberry Pi instrumentation package that we send to the edge of space the system streams over 20 channels of data and my video back here to Mission Control where we display the live data in real time on computer monitors as you can see behind us today we have had five successful launches we send the right asbury pi instrumentation package to over a hundred and ten thousand feet and we maintain wide telemetry using two point three nine gigahertz microwave radios we have developed a new telemetry method of ham or amateur radio over Ethernet and we've been able to maintain wot telemetry links to over 70 miles downrange we are presently getting ready for the launch of Eagle six which promises to be our biggest mission ever today we will show you some of the fly and data performance of our upcoming mission we are planning a mission to obtain an altitude of 110,000 feet and will maintain live video and telemetry throughout the flight and will show real-time position of the space probe on Google Earth during the flight we will have to travel through the jet stream where we will face winds approaching 200 miles per hour we will have to survive the freezing temperatures of space where the mercury will drop 50 degrees below zero and we will move above the Earth's atmosphere well that where the atmospheric pressure will be near zero we must do all this while continuing take mission data and live video until a meter it back to earth okay not a small task for a group of six high school students from a small rural West Texas town okay let's look at some of the features of the hardware you've given us an overview but this is actually our space probe of Eagle six and we have the Raspberry Pi inside of this little box okay you can probably see it tucked down in there okay as chase was explaining we've got to survive temperatures of down to 50 degrees below zero so we have it in this cardboard box when we're ready for launch my flow of that spray foam insulation in there you see that we have it hooked up to the Raspberry Pi camera and that camera is hooked to a servo so it's during flight we can continue to reposition the camera to get the shots that we want initially we'll be looking down as we're going up but then as we get to what 10 20,000 feet we'll start looking out and as we get higher and higher we'll begin to see the curvature of the earth in the blackness of space this is one of the pictures from our earlier one of our earlier launches so inside the box with the Raspberry Pi we have an on axis inertial measurement system so we will be able to look at the orientation of the package throughout the flight we also have a pressure and temperature sensor so we can measure pressure and we'll expect to get down to just almost no pressure at all as we get above the Earth's atmosphere we have a battery here powering the whole thing we have a regulator providing the a regulator providing the power that we need have a fuse in here to make sure that if things start overheating we'll blow the fuse and not start a fire on the on the spacecraft and I we also have a GPS one of the things that we have to do is because we're using a very high frequency for the telemetry radio we have to has very poor propagation so that means in order to maintain communication what we have to do is we have to aim very very precisely at the space probe very accurate aiming and so we have a GPS on board that's constantly making measurements we send those measurements back to the ground and then the antenna automatically adjusts its position to be pointing directly at the probe throughout the flight so we've got a lot going on here and what we'd like to do is just show some of these some of these data data channels in action for you so we really need to move this thing outside so that we can get some get a good fix good GPS fix and then start streaming the data back so Jack would you like to take this out and if you'll just go out let it get a fix and then we will start taking some data ok so jack is taken the package outside our space probe and we're going to show you some of the data streams that we get streaming back to the classroom okay here you can see a shot of Mission Control back behind us you can see that all this data is going to be streaming to these 20 different computer screens so during the launch we can actually track each one of these different data channels on a separate computer screen so let's look at the first animation that we have here chase this is the non axis explain what we're looking at here this shows the roll pitch and yaw and we are able to see the orientation of the package as it goes through the flight ok so right now this is live data Jack is outside walking and you can see that as he's walking the package is sort of bouncing up and down and so that is real-time position he's not rotating it right now but if he was rotating it would be showing that as well so we're getting all non axis of position on that and that is working great but if I remember right this was a little bit limited in what you were doing and so you guys came up with an even more sophisticated graphic to show more data tell us about this this area Frederick kf5 zby this is secondary act 9 axis and this was actually developed by space cowboy Noah Sorrels and as you can see it is a lot more interesting to look at not that the other one wasn't this is just more I guess appealing to the eye you are able to see a lot more different things that are going throughout the launch like downrange so what is the downrange it says downrange miles what's that actually showing you downrange is showing how far the package is horizontally so since Jack is just outside the window right now it's not a big enough measurement to show so how far I know you've been modeling this next fly Eagle six how far downrange do you expect Eagle 6 to to go um so for the predictions have shown at least 400 miles downrange okay so you're expecting to hit an altitude burst and then land somewhere like 400 miles downrange so this will be our most challenging recovery effort ever huh it looks like here you're also looking at orientation so this is sort of showing the tip and the roll is that right okay and then it looks like you're showing the rotation up here on a compass is that right yes okay so it's kind of like the same data that we had here uh for the orientation but now you've got it more like a false horizon on an instrument aircraft so that is a pretty pretty slick thing that we can see those in that in the head okay and then tell us what the altitude is the altitude just shows how high the packages going throughout the flight right now the altitude is okay so I guess the altitude with the graphic shows zero compared to the Eldar altitude of El Dorado okay so you're at you're at ground level for El Dorado right here and you've done modeling how high do you expect to get on this upcoming flight on Eagle six our goal is for Eagle six ago at least 110 thousand okay well that'll be something because that will be above the Earth's atmosphere so that won't really be good what is this air speed in miles per hour this shows how fast the package is approaching it should go through the jet stream so it should reach about 200 miles per hour okay ranging from there okay so you should see some really high speeds on this okay I see that you've got a pretty hot temperature right now what's going on there that is not actually the temperature of outside but since the temperature sensor is close to all the components the components are heating up as they're working so the heat is kind of radiating off yeah kind of building up in that little box right so that inside that box is pretty hot but this will certainly drop on launch day on it once it gets into space it should be around negative 50 degrees Fahrenheit it looks like you're looking at g-force here tell us a little bit about why the g-forces is jumping around here g-force is jumping around because as when it's a sins to space it should be around one so I guess since jack is moving around it's fluctuating as a freefall or you know it's okay so it's like as he's moving around we're seeing picking up that motion inside g-force in it what is the vertical ascent rate what will you expect for that um the vertical ascent rate should be around four to five meters per second okay so it's not going to take a long time to get to space at that rate that is a pretty good clip okay let's look at some of the more some more of the live data that you're stringing back from the package of course we haven't launched but we're just sitting with a package outside and so what is the pressure right now that you're reading on this here at the ground level this is the pressure of the just atmosphere atmospheric pressure of Eldorado and once it is in space since it's not an atmosphere anymore it should be around 200 Pascal's okay so we would expect about a hundred thousand Pascal's we're about ninety three thousand and we'll see this drop down to one hundred or two hundred when we reach altitude it looks like you're also running graphs here so we not just look at the instantaneous but you'll be monitoring the graphs throughout the Y so you can compare them throughout different times of the flight okay let's look at AA this next one it's like we've got some different data here tell us a little bit about what this heading is and the elevation the heading and elevation angle shows at which the the antenna should point at the package so right now you would want the antenna pointing at 175 degrees in heading and minus 2 degrees in elevation and then the antenna would be pointing right at the package so why is it a negative elevation it isn't negative elevation angle because right now the antenna is placed on top of our gym okay so that's why since we are on ground level it has to point downwards oppose so pointing up okay so the antennas up here on the gym and it's having to point down and so if it has those two angles then it's right on the probe and then it looks like the down range is a pretty small number right now yes okay why would that be that is because jack is outside with the pro just right outside the door therefore okay so not much means but this is what you would expect to be 3 or 400 miles as it is why and then the altitude explain why you got an altitude here of 2470 that is actually the altitude of El Torito okay so when it's on the ground in El Dorado your reporting relative sea level okay you can see these numbers changing so this is all live data that's coming in okay and this is a pretty interesting graphic here again these things aren't changing because Jack's just sitting out there with the package right now but I explained again this looks like a more of like a graphical description about it this is a very nice visual showing the altitude of the package throughout the flight as you can see in the bottom left-hand corner of the screen there is a globe and then a little red dot that is labeled Eagle six well the dot is actually going to be the package so throughout the flight the dot will rise okay as it ascends to space and then of course after the lifting and what pops it will go back to okay so you'll be able to see it graphically go up here on the dial as well as seeing the number go up and then as well as seeing that dot goes up so that's a pretty impressive programming that you guys have done okay and it looks like not only a graphic like that but you're also going to be looking at an actual graph of altitude so you'll expect this to go up and hit the 110 thousand feet during the flight and so all these things will be constantly updated every few seconds throughout the flight okay and then here it looks like you have another temperature graphic you might explain a little bit about what these are yes um like I said earlier the temperature sensor is close saw the components inside the little box so the heat is rating off the components which causes it to heat up but this just shows us the temperature throughout this launch once the probe approaches space it should be around negative 50 degrees Fahrenheit and we will be able to compare the different temperatures throughout space and the launch with the graph diagram down below okay and you can compare that then with the altitude and you can see as the altitude goes up the temperature is dropping ok well that's really impressive it's like ah you've got a graphic of the temperature here over time another one and then here you have got ah let's see take a second here to come in looks like you've got g-force and so so when we're sitting here with it on the table we're not getting any cheese than these walking around with it we start seeing some G's reflected okay they tell us what this is going to show this is showing how fast the package is going in miles per hour it shows not even one miles per hour yet because jack is just sitting there so therefore the data that keeps coming in it keeps fluctuating okay so it's just right there at zero is he sitting still so as he moves we'll expect to see this one start not start moving okay so ah this next one is an interesting graph tell us what this is representing it is um this is showing signal strength with which is how well the package is talking to the antenna okay so this is how strong the signal is between the package and the antenna somes so if he's pointing accurately we should see a good number here yes we had we should and that is what allows the data to be so precise okay and so if he starts not pointing well then we're going to lose the signal here so he's constantly watching this throughout the launch okay in the GPS uplink what is that showing us that is showing um as you can see how many satellites we usually like to have around 8 to 10 satellites okay so because then our data is much more precise and every weren't running a lot smoother but five satellites it's okay for now since jack is in very good range of the antenna right now okay yeah and he's probably up there under the trees right now he hasn't really gotten into a clear spot I think we typically see 9 or 10 satellites here and just right now we have five okay and it looks like your next graphic is showing the vertical ascent rate and what will that tell us um like I said earlier the vertical ascent rate should be around four to five but since Jack is just outside holding the package and it's not um ascending very Clea is zero okay let's see what we have here okay that is okay so this tell us what this shot is chase this is a picture coming from the video that is actually on the package so this was a little Raspberry Pi camera that we saw why are we out seeing anything here this is because the camera must be facing downwards as the package is sitting on the ground okay well why don't you call them and see if they can show us something more interesting Jack can you pick up the camera and face it towards Austin please okay told your choice face can you show Austin's face please okay there you go okay thank you okay aspects are ready to do a walk around are y'all ready to do a walk around better use your callsign to you right we are all ready kg v kk x okay so explain what we're looking at here chase this is actually um okay this is Google Earth and we have a space cowboy will he created a KMZ which shows the package okay well it looks like this is moving this red line is starting to move what is that indicating that is indicating the package as Jack and awesome are going to walk around okay so as they're walking around we're seeing in real-time on Google Earth where they are yes we are and so throughout the flight we will actually be able to see the package moving around okay just like we're doing a little mock of up mock-up of it here yes well let's see if we can find one me see if I can find something that will show both of these okay ah ask Jack to show us something with the camera as he walks okay hey Jack can you share something with the camera as you walked okay a little bit higher just a little bit higher a little bit higher please okay thank you kg5 kkx okay told me it's good it's good thank you okay so you're looking at a live video from the packages he's walking around and you're seeing this constantly update we're seeing a constant update on his position I'll just go over there give it a second switch okay so we're seeing a constant update on his position in this track as he's walking and that's being sent back to us by these 2.39 gigahertz radios and as this is happening the the antenna on the roof is constantly automatically tracking and pointing right at them okay so let's go back and see exactly how good they are doing here this was this one yes okay so you've got a live video you got their position live on Google Earth in real-time and he's doing three miles an hour see if you can do any better than that okay Jack in Austin we are saying that you are walking at least three miles per hour I think y'all can pick it up a little bit did you find kkx Oh oh my god just seven miles an hour Wow y'all about two seven miles per hour tell the slow down slowly they told me to back off okay y'all come back off now thank you okay so downrange velocity is working okay and let's see our getting a nice shot on the camera there let's go back and we won't we won't tractor speeding or we will let them go to a more more leisurely great oh it looks like we're already off the screen here so it looks like they're at the corner rounding the corner and then as they round the corner I can never point right it's a round the corner you can see them going around the corner on the Google Earth and you can see them going around the corner with the with the video and so still we're getting a nice move live video from the package and all of this other stuff is still working so we can go back and we can look at the some of the other data channels coming in so as he's walking you can see that he's got the the package kind of tilted up and then we're getting the camera shot there also this this combined instrument package that chase wish was mentioning earlier you can see that that is indicating that it's tilted and if we would have been looking a second ago this this compass would have spun by about about 90 degrees 110 degrees because again it's hot inside the box and you can see that they're getting very early on here at five miles whatever we want yeah we won't graph it any more about that and no vertical ascent rate because so far you think I could get him to jump I think so I'm sorry I think I think we're gonna ever trying his patience already and then uh we could probably let's see if we ever saw any down range we all see a little bit of downrange distance now okay we're about 2.1 miles so that's about a about a city block it looks like that they just if we go back to the if we go back to the Google Earth it looks like they just rounded the corner and they're heading back not quite heading back our direction yet but they've they've rounded the corner and let's see we can come back here okay Google Earth and we're still getting the live video feed from the high camp the pod cam was actually one of the harder things to do you know it was very easy just to get the PI cam to snap pictures but to get the PI cam to constantly send a live video back over Ethernet and over a ham radio that was a pretty impressive thing that you guys did and uh who was it that actually did most of the work on the pav cam that was actually Jack Griffin okay and he's the guy carrying the thing okay and who did most of the ham radio work as far as getting the radios to talk in the ethernet over him that was Austin he was actually walking with Jack right now okay and then doing the most of the work of getting the automatically pointing antenna the high gain antenna working on the roof who did that that will be actually will mine it who is the I guess he's in the space program longer than you yeah this is his fourth year and you can see him sitting there in the red sweater can you wave at us ah there he goes okay so we can see that alright let's go back and see where our where our team is we'll see if they're still moving on the nine axis okay we're still tracking position and orientation of the probe on this and then we'll see where they are on Google Earth okay it looks like they are heading back our direction here so actually where they started was right here so they're almost all the way around the block and so this is going to be quite exciting on launch day as you see the thing not going around the block but going 400 miles downrange you'll be able to track that the whole way okay as it goes across the countryside and you'll be able to see the the Earth from space and we'll start instead of just seeing cars and stuff on the string we'll start seeing some of these dramatic shots like ah like this yes okay so we'll be getting video like this so this is quite exciting so tell us a little bit how it's been for you to be in this program you're the first young lady to make it all the way through the through this the space program and kind of has it been your experience of being in this in this program well I joined this program last year my junior year but I had been in your engineering classes since freshman year and I can say that whenever my first year of high school started and I was going into my engineering class I would have never thought in four years that the space program which had kind of just started would have grown this much and it's just been a very good experience for me um it's I'm glad I've been a part of this it's been really awesome okay now I understand that you just got a an article published in qst magazine is important and consider very good writer and I'm sure that was very exciting for your family to see you in the magazine yes I've accomplished a lot more than I ever thought I would being in this class okay well great it looks like they have returned original to their all the way back to their original starting point after going around the block we tracked them in real time and in addition to tracking them in real time we were able to see a shot of what they were seeing and now it looks like they have gotten tired and just pointed back at the ground with the camera okay so when do we expect roughly when do you expect Eagle six to launch I believe that the launch is going to take place at the beginning of February okay so hope you guys will tune in for that hope you enjoy seeing all the things that you can do with a Raspberry Pi and hope you guys will tune back in for the launch and see all this stuff real so again this is palma quarter with top tech boy calm and i'm chase muroids from le garite in high school and we will talk to you guys

Channel: Paul McWhorter

Views: 86,320

Keywords: HAM Radio, Rapsberry Pi, 2.39 GHz, Telemetry, Raspberry Pi

Id: PKceYYBdns0

Length: 26min 12sec (1572 seconds)

Published: Tue Jan 10 2017