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Re: [Paparazzi-devel] Paparazzi Stand Alone GPS also known as GPS13 not

From: Prof. Dr.-Ing. Heinrich Warmers
Subject: Re: [Paparazzi-devel] Paparazzi Stand Alone GPS also known as GPS13 not working
Date: Mon, 05 Jan 2015 10:07:20 +0100
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.4) Gecko/20030619 Netscape/7.1 (ax)

Hi Joseph,
we had the same problem with same very small nalilock modules.
After same days of working the modules were death.

What do you use?

Often the battery of the ublox module is the problem.
If the voltage is to low the modules gets no reset after power on.
This occurs often after a long time period (4-8 month)  with no power on.
We solved this problem on the same LS module   by removing  the battery  and shorting the
connections of the battery.
If the battery is a secondary cell  a few hours  of power on  can help.

Good luck


Joseph Muhlhausen schrieb:
Hi everyone,

My GPS stopped working today after working perfectly for a year and a half.... The GCS shows "NO FIX" and no data comes in from the GPS. I have started troubleshooting to see what could be the problem.

- I don't think it is software related because since the last flight I didn't flash a new firmware onto my autopilot.

- I have done a continuity test on the wires running from the GPS to the autopilot (Umarim Lite 2)

I am not sure what to try next. Do you have any suggestions?

Thank you,

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