stands for Global Positioning System, a satellite based navigation system

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35 views

Backup battery for GPS tracker [closed]

I am about to install this GPS tracker on a motorcycle. Voltage: 7~30V Current: 60mAh I am planning on connecting it with the back-light wires, so it only gets power when the bike is running. Since ...
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1answer
78 views

GPS signal strength issue - route layout problem?

In my design I use GPS module u-blox MAX-7, LNA MAX2659 and chip GPS antenna. First prototype design shows good signal strength, in 2 minutes from a cold start I have a fix. Here is the picture of PCB ...
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0answers
7 views

Arduino Custom Function Problem [migrated]

I am experiencing problems when I put parts of my code into custom functions and then have Arduino Mega 2560 run it. The code works fine when I put it all in the void loop() function, but when I ...
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1answer
35 views

GPS parity decoding, how to get D29 and D30 of previous bits?

According to ICD GPS 200C, to decode the bits of a word you need to have the bits 29 and 30 of the previous word, this means that to get the bits 29 and 30 of the previous word you should know the ...
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1answer
43 views

How to install an embedded GPS patch antenna

How should I install an embedded GPS antenna? Here is the antenna in question: http://www.robotshop.com/ca/en/seeedstudio-embedded-gps-antenna-for-gps-bee.html It has a 9 cm cable. My project ...
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1answer
55 views

How do I connect GPS receiver module with USB interface?

I have a GPS module DS-330R which has 6 connections, two are not used, one is Ground, one is Vcc (3.8 to 12.0V DC) and the remaining two are Data+ and Data- for USB connection. My questions are: Can ...
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4answers
145 views

Voltage decreases on higher current

I have a circuit composed of Arduino Mini Pro 3.3V and GY-GPS6MV2 (GPS Ublox NEO-6M). I have tried to power it with 3 different sources: 3xAA NiMH in serie connected to RAW pin of Arduino and using ...
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0answers
44 views

GPS Not Working

I'm working with Venus 638 GPS and trying to get my current location. All the documents of it (datasheet, scheme, etc) can be obtained here. To deal with it, I'm using codevision avr and monitoring ...
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3answers
100 views

How does GPS detect coordinates?

While I understand how GPS receiver finds its distance from GPS satellites and exact position using trilateration, I still do not understand how is GPS system able to find the latitude and logitude ...
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2answers
65 views

GPS and Barometer assisted flight on a mountain

This question is regarding a drone and its GPS/Barometer sensor and may not fit well in this community and if that's the case, please advise if I should move it elsewhere. So. I have built a DJI F550 ...
3
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1answer
492 views

What is the purpose of a battery on a GPS receiver?

My GPS receiver has a small MS621FE battery: Any ideas what might be the purpose of a battery on a GPS receiver?
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1answer
152 views

SIM908 GSM and GPS modules individual power control

I've been searching around google and even in manufacturer site for this information and found nothing relevant. Is it possible to turn off GSM module and keep turned on the GPS? How can it be done? ...
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2answers
108 views

Position tracking system for frisbee

I'm trying to build a smart frisbee for use in Ultimate. I'd like to be able to track the position of the frisbee in a playing field with pretty good accuracy (within ~2ft). GPS is a possibility, but ...
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0answers
19 views

Error models for tracking systems

Question in short: what is a suitable model to describe, model or even generate typical errors of a 2D, 3D, 6 DoF tracking system? I am interested in measuring the influence of the quality of ...
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3answers
102 views

Why can't the PIC18 perform a divide operation accurately?

I just noticed that when I am converting coordinates from N/S E/W format to decimal format it getting wrong product. I tested 1256/3600 which should be 0.3488888888889 but my pic gives me 0.3488922 ...
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1answer
55 views

using mbed with gps

I am trying to program an mbed micro controller to work with a GlobalSat EM 406 GPS receiver and have got it outputting long and lat to a host computer using the information on: ...
2
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2answers
163 views

GPS update rate

My thought process: I i'm am looking for a GPS that updates fast enough to actually read its position traveling 130 miles an hour ( I did some math and think 5 times a sec up date rate would get me 17 ...
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1answer
89 views

Tradeoff between embedded chip and external GPS antennas

I'm currently redesigning a board that implements GPS positioning. Until now I've been using a Fastrax IT520 module, which is very nice but has been discontinued. This forces me to rethink my board ...
0
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1answer
169 views

Shorted antenna DC-blocking capacitor value

I have an antenna that contains a DC short to ground ( a PIFA antenna at 1575 MHz in this case ). However, my device cannot tolerate a DC short to ground, so I need to include a blocking capacitor in ...
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1answer
53 views

Get location data for a program using GPS dongle [closed]

I'm working on vehicle tracking system using GPS. What I want to do is connect GPS receiver to my laptop and fetch the location data in to my program. I have seen many commercial GPS receivers and ...
3
votes
2answers
347 views

GPS positioning for quadcopter

I am an engineering undergraduate student. I am currently working on a project to implement a sensing package on a quadcopter for the deployment in the canopy of tropical rain forests. This package ...
-3
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1answer
128 views

Xbee GPS Tracking

We're building a tracking system using Xbee and GPS. Wherein the GPS data is transmitted using the Tx Xbee and received with the Rx Xbee. We've supplied a 3.3V to both the Xbee and GPS (SKM53 by ...
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1answer
158 views

Not getting data from Parallax GPS

I am trying to use a Parallax PMB-648 GPS with an Arduino Nano running this code: ...
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1answer
100 views

Maestro A2200 GPS flash corruption

Does anyone have experience with the Maestro A2200 GPS module? I bought this module primarily on price, it's only 15 euro, but the datasheet indicates that sudden removal of power can result in ...
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1answer
92 views

GPS USB device with external coax antenna? [closed]

I've been looking around for a bit searching for a USB connected GPS reciever which i can hook up to my laptop. However, the building i'm sitting at is not ideal for recieving GPS signals but i do ...
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1answer
76 views

12v socket not providing enough current for mobile phone? [closed]

I've just installed a 12v socket to my motorcycle. The socket has a sticker saying "12V - 1A", and the user manual says that "use is possible up to a power input rating of 12W". Taking that into ...
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2answers
83 views

Getting the direction that user is facing

I've just started playing with electronics and I'm wondering. As you guys probably know, using the iPhone you can get the direction that the user is facing. My question is, what electronic ...
2
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2answers
76 views

Two chip antennas, same ground plane?

I would like to use a 430mhz RF antenna and a 1575mhz GPS antenna. Both antennas are chip and drive current in the ground plane to radiate. The RF antenna is only useful 1s every minute. The GPS has ...
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1answer
135 views

Honeywell Dead Reckoning Module GPS Problems

This was previously posted in the Stack Exchange forum and I was referred here. I'm currently trying to connect a Honeywell DRM4000L to a GPS module. The DRM is a dead-reckoning device which takes a ...
2
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1answer
132 views

GPS accuracy problems outside vs inside with repeater

I have an interesting problem testing GPS receivers: While working inside our lab, we get reasonable results. We have a GPS repeater, as shown in the picture. Inside the lab, I get good accuracy ...
2
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0answers
39 views

Intermittent control signal injection clock sync

I have a big challenge in my design to overcome: I need clock frequency accuracy of <0.2ppm with incredibly low power consumption. What we are doing currently is, using a 3G transceiver' baseband ...
2
votes
1answer
77 views

GPS configuration

I am having trouble configuring a GPS module. According to the data sheet it has 20HZ update rate and 2.5m accuracy. However, the results usually shift between 10m to 100m away from what they are ...
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0answers
39 views

The best components for a hybrid positioning system

I am stuck and need some extra brain power. I am attempting to build a grid of sensors with a trackable object...constrained to an X-Y plane, AND the object that is being tracked must be done so ...
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votes
2answers
497 views

Microcontroller with integrated GSM & GPS support? [closed]

I am looking for a single chip microcontroller with GSM & GPS solution. Is there any microcontroller chip which is specifically available for GSM & GPS solution? So that it will act like ...
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2answers
92 views

Collecting data from GSM devices

this is my first question on electronics, so I hope I will get it right. :) GSM and GPS are topics which are quite new to me, but I will try to be as clear as I can. Is it possible to collect data ...
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0answers
323 views

Using 3DR's uBlox GPS with Compass Kit with Arduino

How do I hook up 3DR's uBlox GPS with Compass Kit to an Arduino UNO to get GPS data on the serial monitor? I was trying to use the tutorial on Adafruit. I think the data is being sent out differently ...
2
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0answers
105 views

Capturing a 16.368MHz data stream with a MCU running at 32MHz

I have a 32MHz MCU (Atmel XMEGA A4) and I need to recover a digital signal coming from a GPS front end chip which is outputting SIGN and MAGNITUDE data at 16.368MHz. Clearly this is a hell of a task ...
0
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1answer
163 views

Arduino multiple serial module usage

I'm stuck at this seemingly simple thing. I have a NMEA GPS module. It doesn't matter how it operates, it just transmit serial data stream at a baud rate of 38400. I have an arduino Mega which has ...
2
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1answer
349 views

GPS over CAN bus

How is GPS data typically sent over CAN bus? Some context: I'm looking to simulate sending and for receiving GPS data (using a Linux-running embedded device with CAN interface), to work side-by-side ...
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1answer
98 views

Adafruit GPS breakout commit setting to ROM

I have got the following GPS Adafruit Ultimate GPS Breakout I want the GPS to only output the GPS information in $GPRMC. I am able to do that with this command: ...
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1answer
451 views

netduino plus 2 compatible gps/gsm module

I have a netduino plus 2 board and I am trying to send gps location with gprs to my server.I am a java programmer by profession,but recently I got interested in IoT and m2m communications.I would like ...
3
votes
1answer
140 views

Connecting Arduino to GPS Chip with Single Pin

I was given an old Garmin GPS unit from a friend and decided to tinker around with it and see if I could connect the GPS chip up to my Arduino to use with their GPS library. Problem is, the chip ...
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votes
1answer
145 views

anyways to receive data from the GPS module with GSM/GPRS [closed]

Am doing a project using the GPS. the main scenario is to display the position of the object in the maps. Scenario : am plan to use a GPS Antenna in the Arduino/Netduino board. where i will code to ...
2
votes
1answer
574 views

Parsing GPS($GPRMC)… Significance of Validity

In "$GPRMC,220516,A,5133.82,N,00042.24,W,173.8,231.8,130694,004.2,W*70" I know that the third argument 'A', is for valid data, but what does validity even mean, because you get an A even when some of ...
0
votes
1answer
123 views

GPS SOS Signal Device

Is there a way to send GPS coordinates from one device to another, without the use of any kind of cell service? What I'm attempting to design is a device that connect to a motorcycles' tip-over ...
-2
votes
1answer
450 views

Using TinyGPS library with Fastrax UP501 [closed]

I was thinking that TinyGPS library can be used with any gps module or there is some condition. (My module being Fastrax UP501). And at some places I read that while the arduino is connected to ...
-7
votes
1answer
717 views

How does SOLOSHOT work? [closed]

Does anyone know how SOLOSHOT works? I'm interested in exploring cheap ways of tracking an object relative to another object. So my brother sent me a link to this product and I'm having trouble ...
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2answers
137 views

Working of a GPS [closed]

one of my friends is thinking of a startup in which we will use GPS technology . The thing is we are thinking of making a cheap gps receiver indigeneously but i am not able to find good links on the ...
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1answer
121 views

Arduino collecting both analog and GPS signals [closed]

Is it possible to collect analog data and GPS with a frequency of about 200Hz? I know the GPS operates at 1, 5 or 10Hz but the analog data could be faster.
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2answers
229 views

Arduino Uno: SoftSerial For Two Devices (em406a GPS and DS18B20 Temp Probe) Not Quite Right

I am working on a prototype that requires use of an Arduino Uno, digital humidity sensor, heart rate monitor, temperature probe, and GPS unit. My issue, I believe is with trying to implement to the ...