Home

Welcome to NavSpark Community, a friendly social site for NavSpark GPS/GNSS enthusiasts. If you have some related GPS/GNSS questions or interesting applications to share, this is the place to come !

NavSpark started as an Indiegogo campaign: http://goo.gl/F4WSfn

To download NavSpark Arduino IDE tools & documents, click Store/Resources, then RESOURCES

Forum

SUP800F

Just received my SUP800F boards. Put one together, everything soldered like a "pro" (I am, lol). GNSS viewer connects to the board on Com 10, but nothing happens. Touching the PL chip on the EVK board resulted in a burn blister and a very quick disconnect from USB power to avoid damage. Everything is nicely soldered, and I don't want to try my other 2 before I know what's going on. Does anyone have a similar experience or is the board DOA?

Read more…
2 Replies · Reply by Jason Lin 4 hours ago

Can we get the micros() api

Hi, I am currently using the millis() function to find out the time elapsed between successive calls to my data filtering process.  The AVR arduino library also has a micros() function, that has a 8us resolution on even the low speed boards. Any chance you can give us this function in the next library rev ? I would like to see if the increased resolution helps ...

Read more…
4 Replies · Reply by Hari Nair 22 hours ago

Current mini-spikes after fix

Hi, I have an MS5611 sensor connected via spi interface to my navspark GL. I started seeing periodic jitter in the processed data after the module got a fix, about once a second or so.  I then isolated the sensor power supply by a ferrite chip 600ohm@100MHz followed by bypass cap 10uF followed by ldo regulator followed by 10uF+100nF+10nF. Also isolated ground with a ferrite chip.  Now before the module gets a position fix, it is very quiet, but after the fix, the periodic noise again, it…

Read more…
3 Replies · Reply by Hari Nair yesterday

Two Wire Problems - Parallax 3-axis Compass HMC5883L

Hello fellow NavSpark enthusiasts! I have been struggling for a few days now to get useful output of the afore mentioned compass module. I verified that it works with Arduino and standard libraries. The problem seems to be me, trying to get NavSpark's TwoWire Library to do the same or similar thing as Arduino's Wire.h does. I figured one of you pros would probably see right away where I'm going wrong!? Cheers lads! [code] #include "sti_gnss_lib.h" #include "TwoWire.h"…

Read more…
5 Replies · Reply by Ralph Loveday 4 hours ago

Blog

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?

Read more…
Comments: 2

GPX File format

Hi!

Anyone knows where I can find a free (opensource, etc...) GPX File output library, written in C or similar ?

In my project I'll add a GPX export feature to the satellite logs.

Thank you!

Read more…

FlexGPS : Flexible GPS Development Platform

From numerous requests in the past, we are now working on something that hopefully would address those wished items in a uniform way.

FlexGPS is a small 19mm x 19mm core module with below major functional parts:

SE4150 + Venus822 (A) GPS receiver: Capable of running standard 1Hz ~…

Read more…
Comments: 9

Activity

Jason Lin replied to Ingmar Guillaume's discussion SUP800F
"It's strange. With the PL2303 interface board itself, can you check if pin-4 VCC is 3.3V, pin-5 VBAT is about 3V? Can you try tap wire off top of SUP800F pin-stick, pin-4 VCC, pin-5-VBAT, and pin-3 GND. Tie VCC and VBAT wire together, measure…"
4 hours ago
Ralph Loveday replied to Christoph Schellenberg's discussion Two Wire Problems - Parallax 3-axis Compass HMC5883L
"This works ...[code] #include "sti_gnss_lib.h" #define Addr 0x1E // 7-bit address of HMC5883L compassS16 x,y,z; //signed short - 16 bits U08 R0, R1, R2; // unsigned byteuint8_t gpio_bit = 0; char…"
4 hours ago
Ingmar Guillaume replied to Ingmar Guillaume's discussion SUP800F
"The PL chip remains "cold" when no SUP800F module is inserted. SUP800F module faulty?"
7 hours ago
Ingmar Guillaume posted a discussion
SUP800F
Just received my SUP800F boards. Put one together, everything soldered like a "pro" (I am, lol). GNSS viewer connects to the board on Com 10, but nothing happens. Touching the PL chip on the EVK board resulted in a burn blister and a very quick… See More
8 hours ago
Jordi Gauchia replied to Christoph Schellenberg's discussion Two Wire Problems - Parallax 3-axis Compass HMC5883L
"Cool!! I'll try this afternoon in my project and draw the compass in my screen!. Yesterday I've tried to test but the offset that I've used was wrong. Maybe the declaration of x,y,z was the problem for the digits... int data type was…"
21 hours ago
Hari Nair replied to Hari Nair's discussion Can we get the micros() api
"OK, thanks to your post-thread, this is how I am now coding my filter loop : #define DSU_CLK_FREQ_HZ 81840000.0f #define DSU_REG   (*((volatile U32 *) 0x90000008))) loop initialization :  U32 lastDSUTick = DSU_REG; each loop…"
22 hours ago
Hari Nair commented on Oliver Huang's blog post Postal Mail or Registered Postal Mail Delivery
"I prefer to have an option for registered mail without the Fedex/DHL/Speedpost costs. I don't care if it takes a bit longer, just as long as it has tracking.  I was lucky to get my Navspark GL boards,  I have had a few non-tracked…"
yesterday
Hari Nair replied to Hari Nair's discussion Can we get the micros() api
"And your post thread has a LOT of useful information !"
yesterday
Hari Nair replied to Hari Nair's discussion Can we get the micros() api
"Thanks Dan, I should have looked in the forum first before posting, that's what I need.  "
yesterday
Christoph Schellenberg replied to Christoph Schellenberg's discussion Two Wire Problems - Parallax 3-axis Compass HMC5883L
"Thanks Lads. I think I made a little progress. 1st: I checked the pull-up resistors and they're only slightly over what they're meant to be. (SCL-3.3V: 4.73k & SCA-3.3V: 2.34) That could be due to my cheap multimeter though. 2nd: If I…"
yesterday
thotypous commented on Oliver Huang's blog post Postal Mail or Registered Postal Mail Delivery
"Mine arrived in Brazil today! I still hold faith in the postal service, although sometimes it is very slow :D"
yesterday
Dan D. replied to Hari Nair's discussion Can we get the micros() api
"I was looking for this too, and put together this: http://www.navspark.com.tw/forum/precision-time Two things to keep in mind: 1. it wraps every 13 seconds instead of at 2^32 microseconds (71 minutes) 2. the background processing done by GPS/GNSS on…"
yesterday
Gabriel Duarte replied to Oliver Huang's discussion 64bit Linux Issue
"That's fine, but you could not simply do it and share the new tarball with the fix of the missing library?"
yesterday
Profile IconGabriel Duarte and Randy Harter joined NavSpark Community
yesterday
Hari Nair posted discussions
yesterday
Hari Nair replied to Hari Nair's discussion Current mini-spikes after fix
"Yes ! The sensor noise is gone - thanks a lot, Jason !"
yesterday

Photos