Rocket Avionics – Building Lumineer


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Lumineer Recovery Video: https://youtu.be/PIy42B6BNwk

Lumineer Launch Footage: https://youtu.be/26ipOlPD-GU

Lumineer Livestream: https://youtu.be/BtdsrU057Ms

Tags: BPS

Comments:
  1. Vader Anomaly

    I would genuinely love to see hours of tutorials about anything you make.

  2. Brian Ressler

    Pretty relatable, Ive never made rockets but I’ve made silly little robots that end up frying right before they’re supposed to be done haha

  3. NolanSyKinsley

    They make a board for basically dissolving the casing of the micro SD card, or whatever SD card you have, mounting it, and using these little metal arms to make contact and breakout the internal SD card chip. just google an SD card recovery kit and you will see the green board I am talking about.

  4. Natalie Fox

    I really loved the candid video parts of the prep. The excitement and suspense and drama are all completely organic and totally thrilling. And it’s fun watching professionals tear their hair out and work the problem as a deadline approaches.

  5. Mat

    wouldn’t FPGA be lighter and safer (as in less software, more hardware)? instead of microcontroller-based board that is.

  6. Nathan Kane rocketry

    Hey Joe, I’ve been looking for some solid core wire lately. What is the stuff you are using?

  7. Julian Chee

    This is absolutely phenomenal ! You did 10X the amount of electronics than what we have in our Aerospace engineering curriculum. That’s highly commendable. I’d love to build a basic Arduino data logger and a pitch/roll/yaw control controller for my future projects

  8. Zoran Simeonov

    Can you put the excess energy from the reaction wheel back into the batteries? I know I have no idea what I am talking about so I will just say thanks for the awesome entertainment.

  9. JimTheBeet

    Whoever did the tracking camera for lumineer did an awesome job – that was smoooooth.

  10. Leon Stansfield

    lumineers avionics when fully built looks so nice, literally engineering art. Love it.

  11. antoinealb

    Hey Joe, awesome video, as always. Regarding screw terminals, in my experience with medium vibration (robots), the best way to have a tight connection is to use stranded wire, but terminate it with a crimp on ferrule, applied with the correct tool. Any reason you are not using this in your rockets ?

  12. Leah Lundqvist

    I love how its literally just drenched in hot-glue

  13. Oli Matthews

    Hey! The avionics detail was awesome, but do ya know what was more awesome? Your NAILS! I love them 😍 💅🏻

  14. jrhAlabamacustoms

    40 years as a practicing Engineer. 2 main tenants; “Test Equipment ALWAYS lies to you”; “Idiot Proof everything – they always make better idiots”.

  15. edgeeffect

    I was thinking about your SD cards…. saying “oh that’s as easy as pie” and then you said the actual chip was cracked and I was like “oh!”…. there MIGHT BE a hardcore hardware hacker out there who could do that…. but it’s looking really doubtful.

  16. Rex Moriah

    Hey Joe Bernard, I’m learning to code with python, what should I do to be able to do what you do

  17. Ben Richards

    screw terminal hack : strip wire then fold the stripped bit back over the wire and push it in the terminal then you can screw down onto the insulation and its much stronger.

  18. C J

    “Today we’re gonna talk about the Avionics”

    *Shows a web of wires*

  19. Gaurav Mukherjee

    Just wow ..! all the best for future missions..! 👍👍👍👍🤞🤞🤞

  20. Devang Gadgil

    He sure does love to show that build montage,it certainly is the best rocket build montage I’ve ever seen.

  21. Alex Portabales

    You could use aero control surfaces “tuned” to work at high speeds that try to zero the reaction wheel speed. That way the reaction wheel works at lower speeds and you don’t saturate it.

  22. Bloop Bloop

    I’d like to see you use multiple engines and gimbals to control roll instead of a reaction wheel

  23. Jordan Springer

    I wish I was like 5-10 years younger hanging out with this dude. I love watching him work though problems.

  24. Piotr Fila

    About the wireless systems: Your metal parts around the antennas were not the only problem. For a rocket you ideally want to use a nearly anisotropic (as little gain/directionality as possible) circularily polarized antenna. On the rocket, either a double cross or clover leaf antenna should do the trick. For the ground station you could use a slightly directional helical antenna (axial mode) or ideally have both a low gain and a high gain antenna and switch between them. Higher power transmitters would also help a lot. The best estimate of the Xbee’s power I can find is 24dBm (250mW). Something on the order of 40dBm (10W) would be more appropriate, but you might need a license to stay within regulations. Also, consider switching to 2.4 or 5.8GHz. There is more bandwith available and you could use the same hardware that is used for FPV drones, and since you will have a direct line of sight to the rocket while it’s in the air the range advantage of lower frequencies is diminished. Finally, test all your antennas. For sub 1GHz frequencies a NanoVNA will help you verify that your antenna isn’t garbage (cheap antennas can be close to unusable).

  25. Freddy Sanders

    the dramatic tension in these lumineer videos is just amazing

  26. Chainsaw FPV

    28 minutes was not enough nerd time for me!

  27. rydplrs

    I mean this with no disrespect, and hopefully it will become new skills.

    You appear to want complete control over design and decisions without respect to your teams opinions and insight until it comes to failure analysis, and then you actually act as a team manager.

    I understand the problem with the inertia wheel having to much stored energy, I think it could be used, but that would take a new paradigm in how it’s used to work, and that’s outside the critical path for your long term goals as stated in previous videos, I would engineer out that distraction.

  28. Caleb

    Is I2C connection of sensors and micro-computer capable of rocket flight? Thank you. Love the videos, Joe.

  29. gavinrfuller

    Great nerd out session, thanks for sharing. Great video.

  30. Dylan Edmiston

    I emailed you and told you you needed to balance that wheel ;) love listening to how the comp work though 👍🏻

  31. mike95826

    Just an FYI, at higher speeds (such as approaching the speed of sound) the Doppler shift is enough to make AFSK modems start to get significant errors. A newer technology tends to solve that problem and it also allows for decoding of data at lower SNR ratios (grabs signal out of the noise). That technology is LORA and there are pre-built boards that have the radios together with an ESP32 wifi/bluetooth CPU module and some also have a GPS receiver and/or sd card slots. Using the ESP32 is now simpler since most of your existing software (like from the teensy) also uses the Arduino IDE and some of the same libraries. And the boards are inexpensive at around $25 each.

  32. Winston Smith

    Check out the 915 and 433 MHz antennas used for long range RC flying that may have more appropriate antenna radiation patterns and locate them away from other metal and electronics, perhaps inside a fiberglass (not carbon fiber) nose cone.

  33. Rich Wojehowski

    It’s very likely that the folks at Drive Savers could get the data off those cards but it might be expensive!

  34. Ekaterina Kolodina

    work on rcs for retardancy and add reaction wheel,
    it works by the reaction wheel backing up the rcs and the rcs backs up the reaction wheel

  35. SeanHodgins

    Buzz: “Fuses, Fuses everywhere!” – Though this might have killed the PWM pin on the MCu anyway. For protection you should definitely implement some IO saving passives on AVA, if you haven’t already.

  36. Shubhayu Das

    Is using a flex PCB a bad idea? Or else, wrap up the primary computer in an plastic shell(or even bubble wrap!), and place all the RF components on a breakout board?

  37. Full Modern Alchemist

    You’re my favorite rocket scientist.

  38. William Mulreed

    Did you need an FCC license for transmitting telemetry from 5-10km?

  39. Karlsson

    is the datarate u are getting over your 900mhz xbee enough?

    I used a ~800mhz xbee for telemetry of an (attempted) self driving racecar (formula student competition), but the data rate was only about 5kbps, which was only enough to update a few values so i ended up using wifi, with shitty range. Just wondered how much data u can manage to transmit over that thing

  40. Trux Pratt

    I’m certain you have thought of this but just in case… have you looked at the rolleron on the sidewinder missile?

  41. MvR

    One thing I noticed watching these videos is: You make things way to complicated. Elon Musk makes his designs as simple a possible. The more complcated a system is the more likely it is going to fail. A lot of these rockets end up making a very hard landing with the pointy end down, even with double redundency. Keep it simple!

  42. Danilo Lattaro

    So, did AVA really burn through the ESC PWM line? I missed the part where it was replaced

  43. rpavlik1

    This is really cool to see. Makes me kind of want to build a little data logger with (possibly knockoff) bmp280 and mpu6500 (because I’m cheap) and shove them into one of my childhood Estes rockets, to watch its 300ft flight…

  44. rpavlik1

    One thing I didn’t hear you mention in any of these videos but which I know from KSC launches: do you have to care at all about “mill rate” (which I understand to be approximately atmospheric charge associated with possible lightning strikes)? Is that just not a thing in the desert?

  45. oogity Boogity

    17:08 I always do that thing were you think your faster than electricity

  46. rpavlik1

    There’s a channel called hdd recovery services made by a guy who does that kind of sd card recovery all the time. He’s quite a wizard, though not sure if he’d give you a deal for cross promotion

  47. Dundee Dideley

    You’re like Doug from scrubs, the one that’s really good at autopsy

  48. Game zone

    Lesson- having smart friends around is helpful otherwise you will fry your rocket computer 😂

  49. ProffesorFarnsworth

    Thanks for the video Joe! I can’t wait to see more!

  50. Mari Onette

    “Constantly on the verge of tears”
    Oh hey! someone else follows the same engineering process as me!

  51. Miłosz Studziński

    My brain got constantly sidetracked by the fact that they wear shoes indoors, then I realised it’s america not europe. Nothing is wrong with it, but the tingle in the back of the head was real.

  52. Cleby Herris

    Drive savers might be able to help. They recovered a burnt drive somehow

  53. C Adams

    Sooo cutting the lipo out then performing a flash chip transplant basically makes you a rocket surgeon right? Awesome video.

  54. 7A37Meet Pitale

    avionics is real complex system of the rocket good work there

  55. Max B

    I don’t know the specifics of your circuit but unplugging power while leaving PWM really shouldn’t fry anything. That is if the controller and ESC circuit is correct.

  56. 2nd Bloxx

    it’s no longer the avionics stack, its now a avionics pile xD

  57. Marc

    It’s so incredible, how much I learn from your videos! Not that I’m ever going to fly a rocket, it’s just super interesting!

  58. Zscach

    Freaking love living vicariously through you

  59. Knolraab

    Perhaps you could try having a magnetic Pogo charger on the launchpad. That way you can charge it while troubleshooting without needing a large battery.

  60. Andreas Lund Ellekjær

    Love to following your journey. Keep up the good job!
    Looking forward to your next adventures.!

  61. Sam Matthews

    Might be worth reaching out to Louis Rossmann to see if he is able to help or knows anyone to assist with the SD Card situation.

  62. SixDRUMMER

    “From the botom of my heart: My Bad!” You are so wonderful :D

  63. Aiden Propps

    Lightly used, great video Joe!

  64. Tom George

    AT 9:46, when you disconnected the ESC, why didn’t you unplug it, why just open circuit the positive wire, I hope you left the input plug/socket on the ESC so you can properly isolate it.
    All in hindsight ofcourse.

  65. Jeremy Ardley

    Perhaps you need to start practicing CRM on the project? (CRM = Cockpit/Crew Resource Management) It works very well for aircraft safety when used. Many recent aircraft incidents are when it’s not used.

  66. TheBookDoctor

    Hey! Nothing perks up a Friday night like a new BPS video! This is how you can tell I am a true party animal.

  67. Ahmet Hüseyinoğlu

    WHAT’S THE SECOND PROJECT? Landing lumineer or other crazy things?

  68. Leo Ponce

    Holy cow. Congratulations.. that was insane

  69. dapperrogue

    You should remove the 5v line going from AVA to the ESC. The 5v line is there for the ESC to provide power to an RC radio receiver (e.g., the BEC). Since AVA is already getting power from elsewhere, this isn’t needed. You only need to send PWM and ground to the ESC in order to control it.

    This also helps you avoid an issue where two voltage regulators fight each other on the same supply line – it’s common for drones and multi-engined RC planes to remove the 5v line from all but one ESC for this reason.

  70. 1.5x playback everything

    Yes!New video from Joe and the mysteries of magic smoke!=)

  71. CaptnC

    This series is amazing and inspiring, can’t wait to see the next episode and the space shot

  72. The Talent

    Just as a thought, perhaps you could make a “dummy computer” with a blank slot for the flash chip to slot in hot, without solder but maybe using some sort of clamp like the cpu of a desktop computer.
    Obviously, AVA is designed for (let’s say) amateur rocketeers and it is likely that they also will discover the joys of the mangled pcb following hard landing. Preparing for this inevitability with a flash dock might be cool.

  73. Steve Wright

    Remote mount your SD cards with soldered-on frangible wires. Put them inside a lump of silicone.

  74. Steve Wright

    Use the reaction wheel to damp impulses and accumulate short term integral, and then use the flight control surfaces to cancel that out with a PID controller – tune the PID controller to go for zero reaction wheel RPM.

  75. Authmion

    I love watching info related to this!!! Your doing such a good job! Cannot wait for more!

  76. Mvrck Studios II

    “hey i’’m Joe Barnard” – Every single bps video

  77. GreatFlamin Zeus

    11:13 this was hard to pitch to my parents, but I think they got it eventually. I’m talkin YEARS here

  78. BozoTheJew

    when will the next episode of landing model rockets come out for blip and blop?!?!?!??

  79. Kienan Vella

    When the power hatch gets plugged in, it almost looks like you can see something glow incandescent on ava.

  80. Mac Feilmeier

    I feel bad watching Joe desperately trying to hold on to his last remaining marbles while getting Lumineer ready to fly.

  81. Wolf Elkan

    Regarding your cracked SD card, I do know a way to recover the data with a 90% success rate, but it won’t be cheap. Take the card to your local Staples, and ask for their Data Rescue service. It costs about $1300 if you didn’t buy the protection plan beforehand. (I *believe* they will still try to recover the data even if you did not originally purchase the card there) In the future, purchase an SD card from Staples, buy their Data Rescue Protection Plan, and fly that on the rocket. The plan costs about $4 if you buy it at the same time you buy the card, and there are zero exclusions.

  82. thavinator

    You want *spring* terminals. Available in similar sizes to standard PC mount screw terminals, with push release that’s easier than screws, and very vibration resistant.

  83. Bee Sod

    Surprised that lipo didn’t ‘plode on impact, well done not dying while removing it!

  84. Sebastião Mendonça

    frying rocket avionics with the bros does sound fun

  85. Jacob W

    You might consider looking into microsd extender cables. They let you plug one end of the cable into the microsd slot, while the microsd card itself goes into the other end in a different location. Compatibility is definitely on a device by device basis, but the advantage is you could build a more secure environment for just the microsd cards, rather than having to protect the entire camera or whatever else you put the microsd card into.

  86. John Anderson

    Entertaining and educational content. Super fun to watch your adventures. Thanks Joe!

  87. Hans Weber

    I work in biomedical research. “I know more than you” is such an easy trap to step into.
    Humility is hard. It stays hard.
    Hubris is so appealing and easy.

  88. Brandon Glatz

    Can we get more up close pictures of the destroyed avionics bay? I would love to see all the destroyed stuff

  89. Matheus Pereira

    Perhaps, on a future flight, a painting with dotted lines with the words: “cut here” will be interesting.

  90. gyachts

    I’ve recovered data from several SD cards, full size, mini and micro. Depending on if the die is damaged. SD is easier because of the serial interface. Send me some photos of the cards

  91. 2:2 Nián Ottley

    Joe how is the RCS system coming haven’t seen an update for a while

  92. dire saint

    15:30 Schrodinger’s Rocket (cat). 🚀

    I remember watching this live then waiting hours to hear if you found it and in what condition.

    Fun times.

  93. Youssef Sadek

    Finally!! A Joe video!!

  94. Brad Jakubowski

    Been waiting so long for another lumineer video

  95. Dieter MacPherson

    Also you could Yeet reaction wheel “leaves” out of the body before saturation. Toss them out all 4 cardinal directions from the body. Good excuse to use frangible joints with explosives too

  96. Dieter MacPherson

    New intro with a lot of #hotnozzle summer is amazing.

  97. Abe Eliason

    I love the tri symmetry of that avionics sled

  98. Cygnus

    I’ve been waiting for something like this. Thank you for your hard work for giving us content. This is an amazing series.

  99. Sam Neale

    The best part of rocket development imo

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    Join me on Wren and start offsetting your carbon footprint today! We’ll plant 10 extra trees for the first 100 people who sign up! https://www.wren.co/start/bpsspace

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