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A juice box :D someone on the dorm floor had some

I'm not totally sure that I understand how this is possible, but I seem to have an extremely janky quaternion orientation solver using 208hz FIFO and running in under 5ms on the Atmega. The sources (AKA mildly stolen code) are this thread and this Wikipedia article. My calibration has issues, it...

that would actually be super useful!

How quickly does calculation error accumulate with this method versus quaternions?

I guess I would still need either a rotation matrix or quaternion?

Okay. I think my mental image of gyro drift is far more severe than it actually is 😅

My one concern with that is I do want to have an orientation track for multi-stage rockets, where I really want to have an attitude lockout so S2 won't ignite if it's on its side.

Yeah, that's what I'm thinking might be the best option. I am still going to give the full code a shot to see if I can't get something to work, but we'll see! I was planning on doing a revision 2 of the board anyway at some point

Yeah. I'll see what I can do with this board, but at least I got it funded by the aerospace club so it's mostly a time loss 😅

On that first part, I'm starting to come to that realization myself... I'm still going to try though! If nothing else, it's good programming practice and data for a revision 2. And on the second part, that is a very good point

It's not quite "planning", the board is on the table next to me :p. But anyway it's an Atmega1284P on a 16MHz clock. The sensors do have FIFO, although I wasn't really sure what it is or how it is used. In terms of floating point calcs, it seems to me that using quaternions instead of rotation...

Oh boy I guess I'll have to do some reading on linear algebra, I don't take it until next semester :p. Thankfully the small amount of matrix math I have done was for a Desmos 3D engine, so I'm a little bit familiar with transformation matrices and quaternions. A little bit... So would I use...

Gyros will experience drift though right? As far as I'm aware a Kalman filter uses the accelerometer to correct for this using earth reference, so how is gyro drift corrected without that reference frame? yeahhh I guess I am... I assume my best shot is to start by establishing a reference frame...

I've seen in other threads on the forum that GPS loses lock because of high Gs during ascent, and that the location updates from GPS aren't nearly fast enough to use as a sensor input. Is that the case, or could I really use it for azimuth? EDIT on that second point, the GPS breakout I'm using...

Hi! I'm in the process of programming a flight computer that I developed from the ground-up, and I was curious if people had insight into the best ways to solve for rocket position and orientation. I've seen a lot of information on Kalman filtering, but as far as I can tell those algorithms...

but CA-ing the pellet to the e-match and sliding it into the motor doesn't count as experimental, since its just the igniter that's different right?

Does embedding the pellet in the top grain count as modifying a motor, thereby making it an experimental motor?

True. For now, any 2-stagers I attempt will be either 29 or 38, most likely 29 for the sustainer. Would 45 even fit in there?

So how much of a Pyrodex 45 pellet would I want to put on the end of an MJG initiator? I'm sure its not the whole thing, right?

Duly noted o7 For MJG initiators, I would still need to dip them in ProCast the same as if they were just chipboards without pyrogen right?