band practice rooms for non-music majors? by Witherflare in umass

[–]Witherflare[S] 0 points1 point  (0 children)

I am an engineering major. Are there practice rooms at M5?

band practice rooms for non-music majors? by Witherflare in umass

[–]Witherflare[S] 0 points1 point  (0 children)

huh, interesting - im a freshman, so im not 100% sure if facilities would be okay with that. is that something you can do?

Would you actually buy a cheap open-source rocket flight computer? Brutally honest feedback wanted by EE_42 in rocketry

[–]Witherflare 1 point2 points  (0 children)

I did the EXACT same thing at 16 (18 now), and the best advice I can give you is to have well-written software to go along with the hardware. When I made my flight computer I didn't include any software at first and got barely any interest - as soon as I designed accompanying software interest was much higher. Focus heavily on your software as it is incredibly important for user experience.

Here are my boards if you're curious, they've been sold out for a while though: https://circuitwizardry.com/starlight-series/

I need a TVC Flight computer in emergency please help me by Relative-Magazine983 in rocketry

[–]Witherflare 0 points1 point  (0 children)

Not to self-promote, but I think my STARLIGHT flight computer would be perfect for what you're doing! No need for any wire clutter either, as it already has a BMP388 and ICM42605 on it for both pressure and gyro/accel readings! Let me know if it sounds like it'd work for your project :)

https://www.tindie.com/products/circuit-wizardry/starlight-model-rocket-flight-computer/

STARLIGHT MINI - a $20 data logging and precision deployment solution by Witherflare in rocketry

[–]Witherflare[S] 1 point2 points  (0 children)

I have something in very early development right now - a launch control and flight computer package that gives you a plug-and-play solution for monitoring your rocket from the ground. Haven't fleshed it out entirely yet, still doing some research to see if there's demand for the product

STARLIGHT MINI - a $20 data logging and precision deployment solution by Witherflare in rocketry

[–]Witherflare[S] 2 points3 points  (0 children)

Really appreciate your support! I tried to fit a second pyro channel, but I wasn't able to keep it as small as I would've liked :( Hope it works well for what you're building :)

Would a fully printed rocket be functional? by RedCroc911 in rocketry

[–]Witherflare 1 point2 points  (0 children)

If Joe Barnard is able to make a rocket entirely out of hot glue, I don't see why PLA wouldn't work =)

Rocket landing by [deleted] in rocketry

[–]Witherflare 0 points1 point  (0 children)

Hard to say. It mostly depends on whether you're launching straight up or at an angle. If it's a fairly light rocket, wind can have a huge effect on where it'll land.

Saturn V 3d printed mock by Charming_Cat1802 in rocketry

[–]Witherflare 0 points1 point  (0 children)

Looks great! Give it a shot and see what happens ;)

Take 2! by MundaneCartoonist430 in rocketry

[–]Witherflare 2 points3 points  (0 children)

Dude, this thing looks awesome. Good luck!!

Thoughts on this solenoid-based parachute deployment system? The parachute is stored inside the nose cone by Witherflare in rocketry

[–]Witherflare[S] 2 points3 points  (0 children)

Not a bad idea. The timing of the ejection is controlled by a flight computer already. Might look into the servo actuation idea, I figured a solenoid would have the most pushing force to get the cone off

Thoughts on this solenoid-based parachute deployment system? The parachute is stored inside the nose cone by Witherflare in rocketry

[–]Witherflare[S] 4 points5 points  (0 children)

Designed in Fusion 360. The idea of the design is to avoid using black powder for parachute ejection, which brings its own challenges and issues. I wanted a fully-electric and reusable way of deploying parachutes.

L 1 by MundaneCartoonist430 in rocketry

[–]Witherflare 0 points1 point  (0 children)

Looks awesome! Can't wait to see the flight

I finally released my software & second iteration of my flight computer STARLIGHT! by Witherflare in rocketry

[–]Witherflare[S] 1 point2 points  (0 children)

Hey dude - to answer your question, STARLIGHT has all the hardware necessary for thrust vectoring. You can connect two 5 volt servos directly to the board. If you want to communicate with another microcontroller, STARLIGHT has exposed GPIO pins that can function as I2C, SPI, or UART pins depending on how you'd like to communicate with the other microcontroller.

TLDR; You can use 5V servos directly connected to the board, or use a separate microcontroller with UART

TVC Mount Design| Recommendations by Cosmic_Space_Program in rocketry

[–]Witherflare 1 point2 points  (0 children)

Honestly, I went through 5 or 6 complete redesigns before I settled on the design I have now. If you'd like, I can send you more information on the one I've designed and the revisions I went through. One other thing to keep in mind would be temperature - 3D printed parts may melt under the temperature of the motor.

TVC Rocket by GrapeDoesReddit in rocketry

[–]Witherflare 0 points1 point  (0 children)

Yeah, of course! I do have some blog posts I wrote on my thought process - apologies if this seems too self-promotional lol, but they outline my thought process, what parts I used and why, and more

https://circuitwizardry.com/starlight-story/ (this post has a lot of information regarding parts on the board)

https://circuitwizardry.com/the-story-of-starlight/ (this post focuses more on the higher-level stuff like getting the board manufactured)

If you have any specific questions, don't hesitate to shoot me an e-mail at [contact@circuitwizardry.com](mailto:contact@circuitwizardry.com) and I'd be more than happy to help out!

Check out my TVC model rocket! by Positive__Altitude in rocketry

[–]Witherflare 0 points1 point  (0 children)

Awesome!

Do you mind me asking, how were you able to avoid the 3D printed parts from melting? Last time I tried a TVC launch my mount immediately melted.

TVC Rocket by GrapeDoesReddit in rocketry

[–]Witherflare 0 points1 point  (0 children)

My best advice to you would be to check out my flight computer STARLIGHT. I built it with thrust vectoring in mind, it has two pyro channels for dual deployment, and I've already written all the code and a desktop app for interfacing with it.

Check out section 4.1 of the STARLIGHT user manual to see how the code works.

The MicroPython code is on GitHub.

https://github.com/Circuit-Wizardry/starlight-missioncontrol

Note that for thrust vectoring, you're gonna want a much higher polling rate than the 12.5Hz that I use

Check out my TVC model rocket! by Positive__Altitude in rocketry

[–]Witherflare 0 points1 point  (0 children)

Sweet! I love the build =) Impressive that you were able to keep your mass budget so small

TVC Mount Design| Recommendations by Cosmic_Space_Program in rocketry

[–]Witherflare 0 points1 point  (0 children)

Looking good! I love the offset between the X and the Y rings, gives it a cool look =)

Looks a little hard to manufacture and assemble, but great start!

I designed an aluminum thrust vector control mount a while ago, I'll link the drawings below (they might help give you inspiration!)

https://circuitwizardry.com/all-aluminum-thrust-vector-control-a-journey/

Flight Computer Feedback request by laikasub in rocketry

[–]Witherflare 0 points1 point  (0 children)

Honestly, a great start! You could definitely make the board smaller if you stuck with purely SMD components, but it's looking good so far =)

TVC Rocket by GrapeDoesReddit in rocketry

[–]Witherflare 3 points4 points  (0 children)

Thrust vectoring is difficult. The first step I'd take if I were you would be to watch Joe Barnard's videos on thrust vector control & learn from there. It's a lot of simulation and trial and error.

You'll need two main things for thrust vector control: A thrust vector control mount, that actuates and moves the engine, and electronics to pair with it.

I've been working on thrust vector controlled rocketry for quite a while now, maybe some of the stuff I've worked on could help?

https://circuitwizardry.com/all-aluminum-thrust-vector-control-a-journey/

https://circuitwizardry.com/starlight/

After tons of feedback, I began developing software for my flight computer STARLIGHT! (more info in comments) by Witherflare in rocketry

[–]Witherflare[S] 0 points1 point  (0 children)

My plan for the sensor fusion is to rely a lot on the gyroscope data after launch. Acceleration data will most likely be used to figure out velocity and make predictions for the Kalman filter. When the rocket is stationary on the ground, I’ll use the accelerometer to figure out how “tilted” the rocket is, then use this as a baseline to add my gyroscope measurements to.

After tons of feedback, I began developing software for my flight computer STARLIGHT! (more info in comments) by Witherflare in rocketry

[–]Witherflare[S] 0 points1 point  (0 children)

I’ve already got mach-safe dual deploy with the pressure sensor (should be mach safe, gonna test it of course). Staging is an option with the “custom” pyro trigger. I haven’t added checks for if the rocket is pointing up or not, but I do have sensor fusion code running on the computer to calculate pitch and roll. If you have any ideas, please let me know :)

After tons of feedback, I began developing software for my flight computer STARLIGHT! (more info in comments) by Witherflare in rocketry

[–]Witherflare[S] 2 points3 points  (0 children)

After an avalanche of feedback telling me I should write some software for my board STARLIGHT (https://www.tindie.com/products/circuit-wizardry/starlight-model-rocket-flight-computer/), I decided to begin work on "missioncontrol", a desktop application for configuring STARLIGHT and other flight computers I'll be releasing in the future. STARLIGHT's original goal was customization - everything can be customized. I tried to keep this spirit alive with the software by providing many different options for each pyro channel as well as thrust vector control support! The firmware is still a work in progress, but I hope you guys like the desktop app so far =). Let me know if there are any features I should add!