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

From: Joseph Muhlhausen
Subject: Re: [Paparazzi-devel] Paparazzi Stand Alone GPS also known as GPS13 not working
Date: Mon, 5 Jan 2015 15:47:27 -0500


It seems to draw power, although it is not clear how much (My voltmeter says "1  ." when set to 200 mA) It could be a short circuit. I am now testing the continuity.


I have bypassed the battery (and made a little bit of a mess) but it doesn't seem to have changed anything so far. I have a ublox LEA-6H made for paparrazi by PPZ-UAV.

I'll keep testing and will report back my findings.

Thank you!

On Mon, Jan 5, 2015 at 4:07 AM, Prof. Dr.-Ing. Heinrich Warmers <address@hidden> wrote:
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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