John, do you still have your equipment? Would you be interested in selling it? I lost my TM a while back, and would sure like another. Mine went silent in flight.
While I am not affiliated with AltusMetrum, if you want I will remove your blocks and add pigtails you can connect to for a very reasonable fee. There are many connectors that are more than up to the task. http://www.digikey.com/us/en/ph/Molex/MiniFitJr.html?WT.z_Tab_Cat=Featured%20Products&WT.srch=1&mkwid=sPM0hiPSp&pcrid=71285876115&pkw=_cat%3Adigikey.com&pmt=b&pdv=c While I can certainly sympathies with you, out of 20 flights my tm shut off 3 times in flight, 2 times because of a screw switch that did was found to be causing the problem during drogue fire. I don’t think I will ever recover the rocket to find out why it shut off the 3rd time. But, I have never had a nominal flight with telemetry, I always had to use RDF to find my rocket. Even my club mates couldn’t talk to my board. I went as far as trying 3 iterations of antennas, plus an sma adapter. MY last flight gave me telemetry until it turned off.(this was the sma, and I updated everythign to 1.5) I understand your size complaint, I know a guy that has bad vision that hates the Raven for this same thing. He simply cannot see the screws. the bulky boards with large terminals are probably the smallest he can deal with. if you have shaky hands, probably not a good choice. I use a $2.00 screwdriver set I got at lowes for my telemetrum. they go to a really small set, and are useful in repairing things like iPhones. you can get an eyeglass repair screwdriver, for even less. I don’t understand why you said the telemetrum would not “hold the wires”. The terminal is meant to make an electrical circuit, not support the wire. What I do with my altimeters is loosen all the screws, insert the wires and use duct tape, or electrical tape and secure them to the board. Sometimes, if I plan, I drill holes and cinch them down with zip ties. If you do it right the wires hold themselves in the terminal, then you tighten the screw down so the the electrical circuit is reliable. Clay From: John Sahr Sent: Sunday, July 12, 2015 10:46 PM To: Altus Metrum Subject: Re: [altusmetrum] How long does it normally take to get GPS lock? I have a Telemetrum and a TeleBT, procured about 8 months ago, in preparation for an NAR L2 attempt last April. What I found was that I could talk to the TM via wired connection, and the TeleBT via wired connection, but I could never get the TeleBT to talk to the TM via the 70 cm link, despite hours and hours of attempts. Except for one brief 10 minute session. When it came time for my L2 attempt, I made no attempt to listen to the TM reports on 70 cm, because: if I couldn't make it work in my living room after hours and hours of trying, I didn't really expect to have it work on the range. Another significant problem with the TM is that the terminal blocks have *tiny* screws. I used a Stratologger as the primary flight computer, with the TM as backup. The only flight computer failures I've had are with the TM, whose terminal blocks failed to hold the wires. To even use the terminal blocks I had to grind down a straight blade screwdriver to be small enough to fit in the holes. ----- Sorry to be a party pooper, but my experience with the TM/TeleBT has been poor; I can't recommend it to anyone. jds NAR 98570 L2 WB7NWP professor, electrical engineering, University of Washington -------------------------------------------------------------------------------- _______________________________________________ altusmetrum mailing list [email protected] http://lists.gag.com/mailman/listinfo/altusmetrum
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