Daniel's Water Rocket Flight Computer

[@daninvents3652]

Thanks George for taking the flight computer for a ride in one of your rockets! I will get to work on the software fixes.

[@LateNightHacks]

The pcb looks a bit generously laid out, maybe you could make it more compact? Should be easy to drop 1/3 off the length, probably would be possible to almost drop half off with higher layer count

[@daninvents3652]

Thank you for the feedback. The white silkscreen makes the board look sparsely populated. There are many traces in this design and I made it as compact as I could. It is true that a multilayer design would reduce the size even further. This is an option I considered but I opted to make it affordable so I stuck to the two layer design.

[@AirCommandRockets]

Thanks Daniel for the opportunity to fly it. :) It's always good to see new tech being developed for water rockets.

[@daninvents3652]

Now the new firmware version is ready! I have taken into account all the issues shown in this video and improved upon them.

[@AirCommandRockets]

@@daninvents3652 Hi Dan, that's great! I only just spotted your comment now.

[@luisjosesalazarserrano264]

The photos are simply beautiful. Great work Daniel!

[@arro_rockets]

Great to see you guys still uploading, some of the best rocketry content out there!

[@letsgocamping88]

On our diy drones the barometric sensor would always get a piece of open cell foam taped over it.

[@joesf1026]

Ordered one immediately. Love the content over the years. Keep it coming.

[@richardcampbell4506]

Photo thoughts - set the camera at a wider frame (or ideally further back) so the rocket will pass through the frame. Set the camera to continuous shots and capture multiple exposures as the rocket passes. Then review the images captured for that flight and drop the image that you like the most. Image sizes in cameras are so large now that you will not notice the crop and will be able to choose the most dynamic shot. This will also allow you to play with slower shutter speeds to capture intentional motion blur. Great video as always. Thanks

[@AirCommandRockets]

Thank you for the suggestions.

[@sharadthecurioustardigrade1533]

Good to see you again after these bad times! Waiting for next Episode on horizon!

[@justinsurla6043]

Amazing as always

[@WeBeGood06]

Fill your high performance rocket with Carbonated Water, half water and half liquid CO2. The propellants would need to be cooled to 0C for the lowest operating pressure. Pressure in the rocket would be a function of temperature of the propellants. A small heater in the launch plug could be used to heat the propellant up to launch pressure from afar. The challenge of this rocket would be loading it. CO2 at 0C liquid is high pressure. Another loading concept would be loading Solid CO2 propellant pellets, then add the 0C water which should freeze in contact with the pellets to insulate them from the rest of the water. Loading would then be a low pressure event. Put it on the Launch pad ant turn on the heater to bring it up to pressure. Your high performance rocket could be filled close to 100% full of liquid, to reach much higher altitudes.

[@kayboku7281]

this sounds interesting, but also sounds like so many more layers of complexity!

[@WeBeGood06]

@@kayboku7281 That's part of the challenge and fun, simplifying the complexity to keep it safe and fun. The CO2 maintains a high pressure as the propellant leaves. The Water acts as a Heat Sink to keep the Liquid CO2 from freezing. The combination of Gaseous CO2 and Liquid Water allows for a larger diameter engine bell after the throat of the nozzle, because the CO2 will achieve Mach 1 at the throat and keep accelerating in the engine bell to a higher supersonic flow, taking the water with it. So, a Carbonated Water Rocket should have a Higher ISP and more Propellant Mass (more than double) at liftoff.

[@kayboku7281]

@@WeBeGood06 Awesome! Try this air command rockets!!!

[@sharadthecurioustardigrade1533]

That seems like a very good idea, but it's expensive and also quiet dangerous, liquid CO2 when at room temp can reach something like 980 PSI, which is fine because horizon can even take 2000 PSI, but the problem is that, when the pressure is that when the pressure is released, there is a big chance of co2 becoming a solid, because as I don't think that water will have sufficient time and thermal mass to keep the liquid co2 hot enough, a really good idea anyways, I would also like to see atleast a static test of it!

[@etcavole]

Awesome content as usual! Thanks a lot for your videos!

[@J-eb6nd]

Simply put a piece of black tape on barometer, good approach. Prevent from unstable air pressure.

[@picknikbasket]

Nice bit of kit!

[@iandrake4683]

Did anyone else say "wow" out loud on the last picture?

[@g.j.647]

Yes, me! Greetings from Germany.

[@aresderflieger5678]

Nice I am from Grermany and love your viedeos

[@AirCommandRockets]

Guten Tag, thanks for following along. :)

[@mrarduino2977]

Dusk photo shoot with glowing fluid inside the rocket would look cool, or an LED in the water.

[@CuervoRC]

that board looks good, in my rockets it's always what I fail and what it costs me to make work. Which program you use to view the flight data, seems easy to use.

[@AirCommandRockets]

The program is called Fuse. It is something I wrote a few years ago.

[@CuervoRC]

@@AirCommandRockets ​ @Air Command Rockets Is it possible to download it somewhere? I always have a hard time finding a program to make graphs easily, I used Excel to make some graphs showing the G-force of a rocket but I couldn't get it to show me multiple flight data at once.

[@AirCommandRockets]

@@CuervoRC Unfortunately the app isn't publicly available yet. ... We are working on an open source version that will eventually be public.

[@luisjosesalazarserrano264]

Great video! What is the software used to visualize the csv data?

[@blacklion79]

Is MicroSD card secure enough to withstand accelerations? Standard MicroSD card slots are not good enough :)

[@AirCommandRockets]

It's a good question. One thing we did was to put tape over the slot to prevent the card from getting lost in case of a hard crash. We've lost SD cards from cameras before after crashes the cards were ejected.

[@mdk2127]

Wow, never thought about that. Goin to apply that tip!

[@kayboku7281]

Awesome!

[@alfonsopayra]

awesome

[@websitesthatneedanem]

Have you done a video on internal nozzle shape .... or it just final size that matters?

[@AirCommandRockets]

We have not done a video on the internal nozzle shape. Though we have done a number of experiments over the years. For most water rockets the nozzles are just a straight through hole because water does not benefit from an expansion nozzle. Foam and air phase could get some benefit from it though.

[@fugtsaetk14]

Hey, I am new to your channel so can you explain which project you are working for?

[@hugostj]

I was wondering what your timing setting is when you are using the automatic mode, since Daniels setup guide has the step to set time in automatic mode.

[@AirCommandRockets]

I set mine to 0 in automatic mode so the parachute opens at apogee. Sometimes you want to deploy after apogee so that's what the delay is for.

[@hugostj]

@@AirCommandRockets thanks for the reply :)

[@user-ok6zl7rq3k]

WOW

[@sdrshnptl]

Hi, can you share app details @3:39 ?

[@AirCommandRockets]

This app is called Fuse, something we wrote a while back to help with visualizing time based data from various sources. This app is no longer in active development.

[@sdrshnptl]

@@AirCommandRockets Thank you for your reply! i would love to contribute to the code if you share the GitHub project link.

[@thevrboi]

Where can I buy it

[@Muss_._]

hye. i very interested when watch your video and i want make diy but i not have this chip and this name chip

[@ValeJOR]

Imagine a water rocket with someone inside, i imagined that, and now im working on lauching myself in a water rocket like that flat earther guy even if i don't think the earth is flat it defenetly round

[@jimadams7765]

Can the "burst mode" be activated with the remote trigger?

[@AirCommandRockets]

Sadly no.

[@timbob8977]

What coding language did you use to code it?

[@daninvents3652]

Hi! I used C++ and the Arduno IDE for compiling and uploading the code.

[@timbob8977]

@@daninvents3652 How did you write c++ and use arduino IDE for compiling? Is there a video for that?

[@daninvents3652]

@@timbob8977 I don't have a video of how I coded it but in this video I show how to compile the code and upload it to the flight controller. m.kzbin.info/www/bejne/jJuZmnePeJqSqa8

[@simonabunker]

Which application are you using to view the data?

[@AirCommandRockets]

The application is called Fuse, something we wrote a while back, you can import time based data directly from lots of different sources and file types.

[@tapiau]

@@AirCommandRockets Is it possible to download it somewhere?

[@AirCommandRockets]

@@tapiau Not at this stage. Eventually it will be made open source.

[@tapiau]

That would be great!

[@projectblacksky_EU]

you can't buy anymore 😞

[@AirCommandRockets]

But the next version is still available: www.tindie.com/products/daninvents/rockit-flight-computer/

[@projectblacksky_EU]

@@AirCommandRockets oh ok thanks! 😄

[@edhammond3729]

I used my granddad's gps. It can measure mph

[@alienbeef0421]

Beautiful! (also, First!)