If you have space and need more computing power, check out the NI myRIO -
even has an FPGA on it! Kinda overkill unless you want a real time system
though...
At one point I tried working with the TI tivaC, a powerful little $15
board, but the programming was beyond me :(
Can't wait to see what you do with the raspberry pi!
-Dennis
On Jun 10, 2015 1:39 PM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
Thx
Some other fusion stuff with R-Pi coming up - stay tuned!
Sent from my iPhone
On Jun 10, 2015, at 1:35 PM, Dennis Yeh <dennismyeh@xxxxxxxxx> wrote:
Ahh, just looked it up - cool project :D!
On Jun 10, 2015 1:25 PM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
Arliss Data Logger
Sent from my iPhone
On Jun 10, 2015, at 1:17 PM, Dennis Yeh <dennismyeh@xxxxxxxxx> wrote:
Does ADL just stand for altimeter data logger or is it a brand/model?
-Dennis
On Jun 10, 2015 7:58 AM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
Thanks Dennis
Yes, That's with an IMU - the ADL!
Yes, got GEP :-)
Sent from my iPhone
On Jun 10, 2015, at 5:30 AM, Dennis Yeh <dennismyeh@xxxxxxxxx> wrote:
Haven't had a chance to check this out yet, but I imagine you could get
additional data from an IMU - there's some cheap ones for up to 16g and
2000 deg/sec with a 1khz sampling rate for <$10 on amazon (gy-521).
Also, google earth pro is free now!
-Dennis
On Jun 9, 2015 10:58 PM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
Just notice, it also prints descent rate also!
t=2348s{9.60V,1791.70mA,61.
00F}<36.52,-120.07,14261.15ft> dt=1.00 dv=-13.00 d=4556.72ft,b=170º
[S10E-LS],<36.52,-120.07,14261.15 feet> *d=48.64f*t,b=98º [S82E-REL]
*[DELTA FROM PREVIOUS @1HZ]*
t=2348s{9.60V,1791.70mA,61.00F}<36.52,-120.07,14219.49ft> dt=1.00
dv=-12.00 d=4546.44ft,b=170º [S10E-LS],<36.52,-120.07,14219.49 feet>
d=40.22ft,b=95º [S85E-REL]
Let's discuss at next launch.
On Tue, Jun 9, 2015 at 10:55 PM, James Dougherty <jafrado@xxxxxxxxx>
wrote:
Guys,
Haven't forgotten about this, I broke some new ground tonight in the
area of GPS post-processing!
Here you go, Complete NAV and stats on the vehicle (up and down).
Heres the raw output of my new NAV
program with the sensor injection. It's a raw log file, but the
program seems to be working!
Ok, now for some polishing and I'll try not to stay up all night :-)
More later ..
-James
t=2305s{10.18V,180.40mA,62.00F}<36.51,-120.07,166.01ft> dt=1.00
dv=0.00 d=496.23ft,b=175º [S5E-LS],<36.51,-120.07,166.01 feet>
d=0.00ft,b=0º [N360W-REL][21 Mar 15 23:07:13]
*[LAUNCH DETECT, Launch-Site GPS Latch (36.51, -120.07)] *
t=2321s{10.18V,180.40mA,61.50F}<36.52,-120.07,12126.64ft> dt=16.00
dv=227.88 d=2739.60ft,b=161º [S19E-LS],<36.52,-120.07,12126.64 feet>
d=2261.86ft,b=339º [N21W-REL]
*[HEADING N21W relative to Launch site - distance of 2739 feet!]*
t=2321s{10.18V,180.40mA,61.50F}<36.52,-120.07,12398.95ft> dt=1.00
dv=83.00 d=2834.73ft,b=161º [S19E-LS],<36.52,-120.07,12398.95 feet>
d=95.17ft,b=343º [N17W-REL]
t=2321s{10.18V,180.40mA,61.50F}<36.52,-120.07,12842.52ft> dt=1.00
dv=135.00 d=3035.83ft,b=161º [S19E-LS],<36.52,-120.07,12842.52 feet>
d=201.10ft,b=342º [N18W-REL]
t=2321s{10.18V,180.40mA,61.50F}<36.52,-120.07,13016.08ft> dt=1.00
dv=53.00 d=3132.14ft,b=161º [S19E-LS],<36.52,-120.07,13016.08 feet>
d=96.36ft,b=344º [N16W-REL]
[......]
t=2337s{10.22V,154.60mA,61.50F}<36.52,-120.07,14582.35ft> dt=1.00
dv=-3.00 d=4464.00ft,b=166º [S14E-LS],<36.52,-120.07,14582.35 feet>
d=173.33ft,b=26º [N26E-REL][00 Jan 7 00:00:00]
t=2342s{9.64V,1920.70mA,61.50F}<36.52,-120.07,14423.88ft> dt=5.00
dv=-9.60 d=4527.40ft,b=167º [S13E-LS],<36.52,-120.07,14423.88 feet>
d=66.15ft,b=3º [N3E-REL]
t=2342s{9.64V,1920.70mA,61.50F}<36.52,-120.07,14402.56ft> dt=1.00
dv=-7.00 d=4538.90ft,b=168º [S12E-LS],<36.52,-120.07,14402.56 feet>
d=93.45ft,b=70º [N70E-REL]
t=2342s{9.64V,1920.70mA,61.50F}<36.52,-120.07,14367.13ft> dt=1.00
dv=-10.00 d=4520.24ft,b=168º [S12E-LS],<36.52,-120.07,14367.13 feet>
d=34.38ft,b=111º [S69E-REL]
t=2342s{9.64V,1920.70mA,61.50F}<36.52,-120.07,14348.42ft> dt=1.00
dv=-6.00 d=4531.88ft,b=168º [S12E-LS],<36.52,-120.07,14348.42 feet>
d=33.02ft,b=58º [N58E-REL]
t=2348s{9.60V,1791.70mA,61.00F}<36.52,-120.07,14303.15ft> dt=6.00
dv=-2.33 d=4572.43ft,b=169º [S11E-LS],<36.52,-120.07,14303.15 feet>
d=72.94ft,b=45º [N45E-REL]
*[APOGEE]*
t=2348s{9.60V,1791.70mA,61.00F}<36.52,-120.07,14261.15ft> dt=1.00
dv=-13.00 d=4556.72ft,b=170º [S10E-LS],<36.52,-120.07,14261.15 feet>
d=48.64ft,b=98º [S82E-REL]
t=2348s{9.60V,1791.70mA,61.00F}<36.52,-120.07,14219.49ft> dt=1.00
dv=-12.00 d=4546.44ft,b=170º [S10E-LS],<36.52,-120.07,14219.49 feet>
d=40.22ft,b=95º [S85E-REL]
t=2353s{10.18V,180.40mA,61.00F}<36.52,-120.07,14022.97ft> dt=5.00
dv=-12.00 d=4546.05ft,b=171º [S9E-LS],<36.52,-120.07,14022.97 feet>
d=85.02ft,b=81º [N81E-REL]
*[DESCENT, Compass Bearing 81 degrees, heading S9E @ 4546 MSL in the
Sky][DESCENT Heading N81E from previous (chute out)]*
On Sat, Apr 4, 2015 at 2:29 PM, fetchen <fetchen@xxxxxxxxx> wrote:
James,
That sounds very interesting.
Yes, if you send the data with GPS, I will incorporate it into the
visualization.
Tom
*From:* James Dougherty <jafrado@xxxxxxxxx>
*Sent:* Saturday, April 04, 2015 11:50 AM
*To:* TCC chat <tccrockets@xxxxxxxxxxxxx> ; Bob Feretich
<Bob.Feretich@xxxxxxxxxxxxxxx> ; James Dougherty <jafrado@xxxxxxxxx>
; Jimmy Franco <aldocyber3@xxxxxxx>
*Subject:* [tccrockets] Re: Flight Visualization Video
Tom,
Let me tell you something I've been working on for GPS-1 and ADL
fusion ...
I've recently wrote a program which takes the RFS GPS and sensor
data, fuses it, creates time correlated data (even during COCOM lock-out
on
GPS), computes haversine (great circle distance or "as the crow flies")
distance, converts GPS to radians and EKF format (when altitude is
present), and performs basic Kinematics from dv/dt (and want to extend to
dx/dt,d/dt,dz/dt with ADL). In the end, It should give you 3D x,y,z and
speed as well as bearing (compass) and heading.
I've spoken to Bob about sensor fusion with the ADL as well,
basically, I need to pass a signal and/or UTC time-stamp when I get first
fix and then all of the ADL 3D data can be correlated as well! It is
something we could probably get going with simply a spare GPIO signal.
Jimmy did a flight last month which has ADL and GPS-1 onboard, I'm
going to work on this with Robert and then we can send you full
correlated
data for your visualization program. My plan for the optimal wishlist
would
be:
time (relative), time UTC, LAT/LON, BRNG, Altitude, Speed, x, y, z,
x', y', z', x'', y'', z'', dps, newtons
The last values would be position, speed, and acceleration, and
integrated newtons seconds.
let me know if there are other fields we could/should use.
Thank you
-James
On Sat, Apr 4, 2015 at 9:06 AM, fetchen <fetchen@xxxxxxxxx> wrote:
I just added summary to my web site of a project I have done to
visualize a rockets flight using the altimeter data along with the rate
gyro data from the RAF Data Logger board. I have not flown my Data
Logger
yet (I plan to at Dairy Aire), so I used the data from one of Bob
Feretich’s ARLISS flights. I have posed a video of the simulation,
along
with the Python script for anyone interested. Check out the video – its
pretty cool!
Go to http://www.speedmotionrockets.com/Flight%20Visualization.html
and scroll down to the rocket image and click on it to see the video.
Tom Fetter
