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My Navspark is dead?

Hi.Suddenly my navspark can't obtain GPS fix signal.Two days ago,signal was fixed in less than a minute in open sky, but yesterday and today not.Only I can obtain time sometimes and maximum one GPS satellite with low signal.In gnssviewer the boot status was QSPI (fail)Any ideas?

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6 Replies · Reply by Jordi Gauchia 23 hours ago

NS-RAW got me a new job!

So, I got my NS-RAW units and started playing with RTKLIB. RTKLIB needs precision orbital data to correct the raw GPS output, so I accessed the free downloads from SOPAC (http://sopac.ucsd.edu/).  I got my Bachelor's degree from UCSD (University of California at San Diego), and I was glad to see that the data was being generated by a local group. It soon became clear that I needed a highly accurate reference, and rather than go searching for a local surveying benchmark, I started looking for…

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1 Reply · Reply by Jordi Gauchia yesterday

Cannot upload Hello World - get Error Code : 4

I have been unable to upload the NavSpark Hello World example to my NavSpark-GL.I have tried this on both Windows 7 and Ubuntu Linux. When I try to upload the Sketch, I get the following: NavSpark image failure. Error code : 6 After the failure, the device outputs a continuous streams of illegible characters on the USB port, as shown by the serial monitor. The reset button restores it to a more normal 1/second dump of NMEA data.

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4 Replies · Reply by Jason Lin 11 hours ago

TCXO Error - NavSpark-GL booting from ROM

I have a NavSpark-GL which I just started testing. After I boot it from ROM (short the BOOT_SEL pin to RF_GND as USB is connected), it gets an error that suggests the firmware is for a non-GL product.Is that the problem, or is there something else possibly going on? Here is the NMEA output (note the last line):…

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8 Replies · Reply by Jason Lin 11 hours ago

Blog

More NS-T Programmable Frequency Testing

Although NS-T generated frequency lock accuracy is better than 10^-11, there is phase jitter. This experiment tries to clean up phase jitter with $2 PLL : http://www.digikey.com/product-detail/en/PI6C4511WE/PI6C4511WE-ND/1305452. PLL used has output minimum of 2X input frequency, so 10MHz input will have 20MHz output, 19.2MHz input will have 38.4MHz output. Jumping wire to…

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Comments: 0

Single Frequency Receiver RTK Result Comparison

We have been working on Beidou carrier phase raw measurement output for some time. Below is exciting test comparison showing for single frequency low-cost receiver, more satellites has higher ambiguity-resolved fixed rate. GPS L1 + Beidou B1 combination gets more satellites, helpful especially in urban environment. The test is done using not yet released RTKLIB with Beidou capability, collaborating with Tokyo university.

Receiver Module: S1722F8-BD-RAW

Antenna: HX-CSX601A (base…

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Comments: 2

UART1 to 900MHz Radio

Wanting to have a mobile wireless base station, I took a Hextronik 900MHz radio and connected it to my SD adapter board as follows:

Radio      SD Board

5v           5v Out

Gnd        Gnd

Rx          Tx1

It works fine talking wirelessly to my receiver radio plugged into USB on PC, but if I want to change any configuration on the board I have to plug in directly to the USB on the module. What is the reasoning behind not providing a Rx1?

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Comments: 2

Activity

Jason Lin replied to John Moore's discussion TCXO Error - NavSpark-GL booting from ROM
"Tried to put Arduino package in the same path as yours, didn't have problem compile and upload from Arduino. Strange you have problem doing it..."
11 hours ago
Jason Lin replied to John Moore's discussion Cannot upload Hello World - get Error Code : 4
"Got below Navspark Download program error code from engineer:
1 - Can't open firmware binary file.2 - Parameter error, unsupported baud rate.3 - Can't open COM port.4 - Sent download command but receive no ACK response6 - Loader program sent binary…"
11 hours ago
julio menezes replied to John Beale's discussion zero-baseline testing with RTKNAVI
"Hi John BealeYour antenna seems to be good.Are you using this one ?http://navspark.mybigcommerce.com/gps-glonass-active-antenna/Could you please, share with me your antenna model and a rinex with 4 observables ( C1,L1,D1,S1 ).I start testing some an…"
21 hours ago
julio menezes replied to Professor Pardal's discussion Folks from Brazil
"Hi Edesio,
I wanna use it for mapping tasks. I am a GNU/Linux user too. ( GNU upercase ) ( Debian and Slackware )
I leave in south BraSil. but i was born in BH-MG
[]s
julio menezes"
21 hours ago
julio menezes replied to Bantammenace's discussion IGS antenna name ?
"Hi, Batmanmenace
Try to set your antenna type as: UNKNOWN , this must turn off corrections  for phase center...
Are you using a navspark antennas ?
Please, if not, please, let me know the model and if possible, send me a rinex with 4 observables ( C…"
22 hours ago
Jordi Gauchia replied to Jordi Gauchia's discussion My Navspark is dead?
"Update:
I think that found the problem.
It's seems ground section of antenna cable it's broken.
I'm will try to fix it.
Thanks to all!"
23 hours ago
Jordi Gauchia replied to Jordi Gauchia's discussion My Navspark is dead?
"Hi.
I use the normal antenna shipped with navspark.
Yes, it's correct,sometimes takes long time to get the fix signal. Two days ago the signal was fixed in less than a minute."
yesterday
Jordi Gauchia replied to Jordi Gauchia's discussion My Navspark is dead?
"Hi.
It's a navspark-gl and it's not in rom mode, it have my code uploaded.
It's the first time that occurs"
yesterday
julio menezes replied to Jordi Gauchia's discussion My Navspark is dead?
"Hi Jordi,
I have had the same problem, NS-RAW looks dead but it is not.I solve it thru GPSviewer,  switching from NMEA to BINARY. ( i do not wanna use windows, i am a GNU/Linux user ), but it is a minor issue for me now.Some times it takes longer to…"
yesterday
Lukas K replied to Jordi Gauchia's discussion My Navspark is dead?
"Which Navspark is it? The Navspark-GL can't get a fix in ROM mode as explained in the comments here: http://www.navspark.com.tw/forum/tcxo-error-navspark-gl-booting-fro..., so if it's a GL version and you have the Boot_Select still active, that migh…"
yesterday
Jordi Gauchia replied to Jordi Gauchia's discussion My Navspark is dead?
"Sorry.
I followed recovery procedure to fix QSPI and now it's ok.
But signal still not fixed ..."
yesterday
Jordi Gauchia posted a discussion
Hi.Suddenly my navspark can't obtain GPS fix signal.Two days ago,signal was fixed in less than a minute in open sky, but yesterday and today not.Only I can obtain time sometimes and maximum one GPS satellite with low signal.In gnssviewer the boot st…
yesterday
Jordi Gauchia replied to BobC's discussion NS-RAW got me a new job!
"It's cool!!!"
yesterday
Borislav Mantchev updated their profile
yesterday
BobC posted a discussion
So, I got my NS-RAW units and started playing with RTKLIB. RTKLIB needs precision orbital data to correct the raw GPS output, so I accessed the free downloads from SOPAC (http://sopac.ucsd.edu/).  I got my Bachelor's degree from UCSD (University of…
yesterday
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