altusmetrum August 2014

altusmetrum@lists.gag.com

17 participants
16 discussions

group project for Thunda in 2015?

by Bdale Garbee

Keith and I both hope to be able to attend "Thunda Down Under"[1] in 2015, and I've sent the organizers email requesting information on what it takes to be treated as an on-site vendor. Of course, it's always more fun to be at a launch when you have something interesting to fly! Thus, while Keith and I might each show up with a modest "travel rocket" of some sort... I've started pondering possible larger "Altus Metrum" group projects. Since transporting a large airframe to Australia would be a hassle, I wonder if a group project to build an airframe in-country makes more sense? To that end, I'd be pleased to know if any of our friends and customers in Australia want to sign up to help with such a project? My thoughts would be to engage in some group-think about project scope and goals, then hope friends in-country would take on the sourcing and preparation of suitable airframe materials. Depending on who wants to participate and how tasks get taken up, we might plan to arrive a bit early to help with any final assembly or other preparations, installation of suitably fresh Altus Metrum electronics, etc. So, to all our Aussie friends... does this sound like fun? If so, please chime in with a reply. I don't expect the email associated with such a project to be too heavy a load for this list to carry, but we can always spawn a dedicated lists.gag.com list if I'm wrong. Regards, Bdale [1] http://thunda.com.au/

5 years, 10 months

Altus

by William J. Wagner lll

Bdale Garbee, I have one of your older Altus, which I have not been able to get it to work with my laptop which has Windows Vista on it. Do I need to uninstall it to update it? Bill Wagner

8 years, 6 months

Selecting an antenna

by Clay and Carly Dunsworth

My last flight pulled my whip antenna from my telemetrum, so I am going to put an sma connector on it. (it’s a – patchwork fix I am rather good at by now.) No use throwing away a 300.00 board cause of missing pcb trace... I have decided to mount an antenna on the aft bulkhead so it is exposed at the apogee. I came across this and wondered if anyone has used one of these? http://www.ebay.com/itm/Dual-Band-VHF-UHF-SMA-M-145MHz-435MHz-Antenna-for-R… The other option are these whips. they are sma or pl259(which might be better...?_ 14.4” http://www.ebay.com/itm/High-Gain-14-4-SMA-Female-Dual-Band-Antenna-for-BAO… 7.56” pl259 http://www.ebay.com/itm/10W-uhf-400-470mhz-black-short-car-amateur-radio-an… sma http://www.ebay.com/itm/SMA-F-Dual-Band-UHF-Antenna-144-435MHz-for-BAOFENG-… cheap enough to buy all 3, but the stubby ducky would be good in my minimum diameter rockets that have almost zero room.. wondering if anyone has used them with any success and can advise on how they compare.

8 years, 6 months

Re: [altusmetrum] Help me for I've got Windows 8 (8.1, actually)

by Kevin Trojanowski

Try installing Java 6, first. -Kevin From: altusmetrum [mailto:altusmetrum-bounces@lists.gag.com] On Behalf Of w9ya Sent: Wednesday, August 27, 2014 9:17 AM To: Altus Metrum Subject: Re: [altusmetrum] Help me for I've got Windows 8 (8.1, actually) Small suggestion; You might consider dual-booting the machine with linux as a second operating system. The altus products are written on linux machines. Then again..... - Bob F. On Tue, Aug 26, 2014 at 9:10 PM, Ted Apke <tedapke(a)gmail.com> wrote: I'm sorry to say that we have a new PC that I'm hoping to use to do some work on related to altusui. I've read the pointers about driver signing and have disabled that then I tried 1.4.1. The problem I'm having is shortly telling me about needing to install Java I get an error saying it can't load NSISdl.dll, pointing to a temp directory. Any ideas? Ted (I really hate Windows) Apke _______________________________________________ altusmetrum mailing list altusmetrum(a)lists.gag.com http://lists.gag.com/mailman/listinfo/altusmetrum

8 years, 6 months

Re: [altusmetrum] Roll, pitch, and yaw?

by Bdale Garbee

EasyMega retail will be $300, intro special of $250 planned for this weekend. On our way to Airfest, will post details tonight. William Blair <wbblair3(a)yahoo.com> wrote: >> Both TeleMega and EasyMega record raw sensor data from the accel, gyros, and magnetic sensor in 3 axes in >> addition to baro, GPS, and high-g accel along the axis of flight. >> >> Bdale > >Great. I was looking for the wrong keywords in the documentation. In the "Configure Graph" window of AltOS, I see the ability to select the graphing of "Rotation Rate" for the x, y, and z axis. I also see the mention of exporting data in csv format. > >Any estimate on the availability date and cost of the EasyMega? > >Thanks, >William >_______________________________________________ >altusmetrum mailing list >altusmetrum(a)lists.gag.com >http://lists.gag.com/mailman/listinfo/altusmetrum

8 years, 6 months

Permission denied

by Craig Klimczak

I have one of the original TeleMega boards version 1.0 and am trying to get it ready for its first flight at AirFest this weekend. It currently has version 1.3.2 image so I am trying to update it to 1.4.1. I have it connected to my Linux machine and I am getting a Cannot open file, TeleMega-v1.0 1233 /dev/ttyACMO (Permission denied (13)). I have chmod to give all permissions to my login and my group. Any ideas? I tried Windows 7 but run into the driver Code 10 when the system switches into flash mode. I have deleted drivers and USB Host and completed reinstalled ver 1.4.1 and tried 1.4.2. I have both Windows and Linux. Any ideas? Craig

8 years, 6 months

Roll, pitch, and yaw?

by William Blair

I'd like a flight computer that can record, along with the usual data, roll, pitch, and yaw for use in the approximation of the dynamic stability, or instability, of a design at various velocities. I can find no references to a flight computer capable of that online nor did I find any instances of the keywords "roll," "pitch," "yaw" or "attitude" in the AltusMetrum all-inclusive PDF documentation even though the TeleMega and EasyMega list a 3-axis 2000 deg/sec gyro chip as one of their components. Simply the detection and logging of pitch and yaw movements and rates during flight would suffice to allow the identification of anything unusual. Thanks, William

8 years, 6 months

TeleDongle & Idle mode monitoring bug

by Andrew Wimmer

First, thanks a ton for Altos 1.4.2. I can finally install it on my Windows 8.1 machine, which means I don't have to pull out my old laptop just for this. Related to the subject line, I had an interesting, if not a bit frustrating observation tonight. I have a TeleDongle and Telemega. I was playing around with my TeleMega on channel 9, trying to use the idle mode monitoring. I've done this before successfully (but not on channel 9), and wanted to test something unrelated out. I found the following trying to connect to the TeleMega via the TeleDongle in idle mode: In Channels 0-6, everything works fantastically In Channels 7-9, the TeleDongle is unable to connect to the TeleMega. In flight mode, the TeleMega transmits on the frequency I would expect it to normally. Not a big deal as it's still useable assuming frequencies aren't too crowded, but it's a bit odd I so I figured I'd email out about it. It also seems that the time it takes the TeleDongle to connect to the TeleMega increases as the channel # increases, but I didn't quantify it. -Andrew

8 years, 6 months

Re: [altusmetrum] Roll, pitch, and yaw?

by William Blair

> Both TeleMega and EasyMega record raw sensor data from the accel, gyros, and magnetic sensor in 3 axes in > addition to baro, GPS, and high-g accel along the axis of flight. > > Bdale Great. I was looking for the wrong keywords in the documentation. In the "Configure Graph" window of AltOS, I see the ability to select the graphing of "Rotation Rate" for the x, y, and z axis. I also see the mention of exporting data in csv format. Any estimate on the availability date and cost of the EasyMega? Thanks, William

8 years, 6 months

Re: [altusmetrum] Roll, pitch, and yaw?

by Bdale Garbee

Both TeleMega and EasyMega record raw sensor data from the accel, gyros, and magnetic sensor in 3 axes in addition to baro, GPS, and high-g accel along the axis of flight. Bdale William Blair <wbblair3(a)yahoo.com> wrote: >I'd like a flight computer that can record, along with the usual data, roll, pitch, and yaw for use in the approximation of the dynamic stability, or instability, of a design at various velocities. I can find no references to a flight computer capable of that online nor did I find any instances of the keywords "roll," "pitch," "yaw" or "attitude" in the AltusMetrum all-inclusive PDF documentation even though the TeleMega and EasyMega list a 3-axis 2000 deg/sec gyro chip as one of their components. > >Simply the detection and logging of pitch and yaw movements and rates during flight would suffice to allow the identification of anything unusual. > >Thanks, >William >_______________________________________________ >altusmetrum mailing list >altusmetrum(a)lists.gag.com >http://lists.gag.com/mailman/listinfo/altusmetrum

8 years, 6 months

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altusmetrum August 2014