stands for Global Positioning System, a satellite based navigation system
-2
votes
0answers
53 views
ARM board for DIY GPS [closed]
I have been experimenting with a u-blox 7 module hooked up to my laptop via USB. Now I want to try using it to build a DIY GPS receiver. But I am not sure which ARM board to go with.
Basic specs I am ...
0
votes
0answers
65 views
TinyGPS library doesn't update GPS data when using Arduino ADC
I have a problem where I am using TinyGPS library to get NMEA data from a GPS, while also sampling the ADC at the same time. The problem is that it reads the ADC fine, but it seems to execute the GPS ...
-3
votes
1answer
71 views
How to measure the EMF in the air and log it into a csv file [closed]
I would like to build a device measures the EMF in air,it should be sensitive for a wide band (broadband) EMF, And I want it to be able to log into a csv file the time and amplitude of EMF ...
0
votes
0answers
45 views
What are the minimal hardware parts needed for an active GPS tracker?
I am considering to implement an active GPS tracking device that is completely independent, the tracking device should get it's location every few seconds and send that data to a server over some ...
0
votes
0answers
42 views
Embedded project using Mux and Demux for antenna
In our current embedded project we are implementing a GPS ,GSM and Wifi Module. To connect these modules to external antenna board,separate SMA cables are used.As our design requires each of the ...
1
vote
2answers
71 views
Embedded system with SMA connectors
I am developing an embedded system that performs GPS and Wifi operation with separate modules for each and two SMA connectors to connect the respective antennas. Once it is being installed, is there a ...
2
votes
1answer
59 views
How to use Radix UP501 gps module with arduino
I bought Radix UP501 module . but i don't know how to use it with my arduino to output the location data on serial monitor .. How to make it working ???
2
votes
1answer
56 views
Embedded board level functional test at factory
My embedded project has a GSM and a GPS module. What is the best way to test the radios of these modules after the production of CCA like in a factory conditions.I was thinking of signal generators ...
10
votes
1answer
206 views
GPS Design Review (RF Input)
I've designed a PCB in Eagle to host a GPS Receiver module and a GPS patch antenna. The RF input to the module is specified as a 50Ω unbalanced (coaxial) RF input. I used this calculator to calculate ...
-3
votes
2answers
130 views
Can someone copy a gps device we make?
We plan to build a GPS device for our local community which will act like an electronic guide. The chip inside will contain GPS coordinates of important sites in our region as well audio guides.
...
1
vote
1answer
200 views
How many functions can I put into an arduino uno? [closed]
Is it realistic to put the following: GPS module, GSM module, SD card slot and about 4 analog sensors into Arduino uno? (have not yet goten an Arduino in my hands).
3
votes
2answers
147 views
Arduino GPS Camera
I am working on a project through my school. We are going to be shooting cameras on spikes into the ground beside grid roads for tornado tracking. The spikes will be equipped with two cameras. My job ...
1
vote
1answer
109 views
GPS module antenna shielding
I am designing a PCB including a GPS module. I am using the Locosys LS20031 which has a antenna mounted on it. The module is mounted on the board with 1" plastic studs and a connector connects it to ...
-3
votes
1answer
106 views
What is this connection socket called? [closed]
I have a Pogo Alert+ GPS system. It has a port on the rear for an external GPS antenna. What is the port called so I can research antennas with the correct connection cable?
0
votes
1answer
42 views
GPS error reasons and maximising errors
I noticed that when using gps in mobile phone, I am positioned away from a wall if I stay very close to it. For example on a street with buildings on both sides, I usually get my location fix on the ...
-1
votes
1answer
94 views
smallest gps out there [closed]
I'm working on a school project and my team needs the smallest GPS possible. With some help from stackoverflow, we found https://www.sparkfun.com/products/11571 from sparkfun.
This is good enough to ...
0
votes
2answers
467 views
Transmitting GPS data to Raspberry Pi
I am trying to figure out a way to get GPS data from a remote source to a Raspberry Pi. The remote source would be a helmet mounted GPS receiver so it would need to be small and preferably ...
3
votes
1answer
151 views
How does the addition of a bias-t circuit affect the impedance of a transmission line?
I've got a GPS circuit where the antenna is connected directly to the GPS receiver via a coplanar waveguide designed for an impedance of 50ohms. Unfortunately, I neglected to add the bias-t circuit ...
2
votes
2answers
177 views
Cheap bracelet with indoor location tracking
I want to provide people at an indoor exhibition of ours with a bracelet which allows me to send a signal to it to flash a led light. At the same time I want to be able to determine the location ...
4
votes
2answers
376 views
How does GPS calculate time
How can a GPS device give exact timing even when the number of available satellites are zero?
I'm monitoring GPS data using VisualGPS.
3
votes
3answers
502 views
Trouble in using MT3329 SKM53 GPS module
I bought a SKM53 GPS module a few months ago. I tried hard to make it work but couldn't get anything out of it. I was thinking it's a fault with the device (actually i thought i burned it by not ...
1
vote
1answer
371 views
Selecting a GPS module for a mobile robot [closed]
I need a GPS module to include in my quad-copter for providing GPS based navigation. I found there are many GPS modules available, and there are different kind of information available in their specs. ...
2
votes
2answers
120 views
Using an old Bluetooth-enabled Blackberry as a GPS
I have a few Blackberry devices with integrated GPS functionality. Given that the SIM is no longer activated, is it possible to use this device as a second hand GPS unit?
My thought is that I can ...
0
votes
2answers
184 views
Criteria for gyroscope export restrictions [closed]
Recently I tried to purchase a gyro for a GPS car tracking device I'm designing and Digi-Key refused to sell me since I'm outside US and that specific part (L3G4200D from STMicro) is ...
-2
votes
1answer
167 views
How can I attach gps chip to 3g chips? [closed]
I'm a software developer. Recently, my bike was stolen and I'm pissed off.
The police is useless and what's in my mind now is how can I prevent this from happening again.
What I want to do is, lets ...
1
vote
1answer
328 views
No or wrong NMEA checksum for GPS data from MT3339
I have LS20031 GPS module (I believe with MT3339 chip) connected to Arduino. Using SoftwareSerial reading data when available(). ...
0
votes
2answers
171 views
How to detect when an antenna is not connected
I have a GPS receiver module connected to an AVR microcontroller and need to detect if it doesn't have an antenna properly attached. Some time ago I found a reference circuit but now that I need it I ...
4
votes
2answers
178 views
How to find whether a vehicle turned left or right or didnt turn using gyroscope data
We are trying trace a vehicle movement when the GPS goes down. We are using accelerometer and gyroscope sensors. And also get the vehicle speed from the OBD (dashboard.) The data will be collected for ...
3
votes
3answers
184 views
Can more than one device read data from GPS?
I have an OSD(atmega88p inside), which is reading data from GPS through serial connection as I understand and I would like to connect second device (FEZ Cerb40) to read GPS data, wondering if that ...
0
votes
2answers
113 views
Connecting a 12.5VDC switch output to a GlobalStar SmartOne GPS unit
I have a device (hermetically sealed onboard computer on a diesel generator) with a power switch that is connected directly to a lead acid battery (~12.5VDC). I would like to trigger a gps device when ...
6
votes
2answers
156 views
Tracking wandering vulnerable adults
I work in the field of telecare and advances are helping us keep the elderly and vulnerable out of residential homes/hospitals and allowing to retain their dignity and independence by staying in their ...
4
votes
2answers
2k views
Trying to build gps tracking device
I am an engineering undergrad trying to build one gps tracking device with features like live streaming, current position, average speed, etc. (and if possible then sound etc.) from some computer ...
8
votes
2answers
263 views
Send GPS coordinates via VHF
I want to set up a system such that wherever a user of VHF presses the PTT button the coordinates from a GPS receiver will transmited to receiver and stored in a computer. Is that possible ? Where ...
1
vote
1answer
402 views
Cheap programmable GPS unit?
I'm in the middle of installing GPS tracking into my car using the following guide:
http://gizmodo.com/5691724/how-to-track-your-vehicle-on-the-cheap
Though I'd like to build something a little ...
1
vote
1answer
70 views
Modifying an old phone to draw less power?
I have a phone that I would like to install in my car as a GPS tracker, using the following guide: http://gizmodo.com/5691724/how-to-track-your-vehicle-on-the-cheap
I'd like to keep it hardwired to ...
2
votes
1answer
2k views
How to use a multiple serial port in Arduino
I have obtain 2 shield from Itead; GPS Shield & IComSat GSM Shield. I have a requirement to
develop an Arduino Uno prototype and used a serial interface to communicate with this two shield. My ...
2
votes
1answer
137 views
What certifications are needed for GPS/GSM devices in AirPort?
I am kind new in industrial engineering my company has order for several devices which would be used in airport Technics cars. Do I need some kind of special certification for devices that I create to ...
3
votes
1answer
583 views
Locate a mobile phone precisely for indoors tracking
Firstly, I don't know if I'm asking this at the right place, so excuse me if it's not.
Suppose i want to track a mobile phone in a local area, lets say a large hall of 200 m x 50 m, using any ...
10
votes
2answers
742 views
GPS: 12 satellites in view but no fix
I have a Jupiter F-2 GPS receiver connected to an STM32 that outputs NMEA messages every second. The GPGSV message indicates that I have 12 satellites in view. At ...
3
votes
1answer
164 views
Is using a shorter timer period less accurate than using a longer one?
I'm using a dsPIC 33FJ128GP804 and I'm trying to record data at 200 Hz as accurately as possible. My device also has a GPS and I'm noticing that my timer is drifting compared to the GPS by about 333 ...
3
votes
2answers
259 views
Garmin Gps Battery Modification
I recently bought a GTU 10 from Garmin.
I want to extend it's battery life by replacing and soldering on a new battery and enclosing the battery and the GTU 10 in a 1601 Otterbox.
I would like to be ...
2
votes
1answer
120 views
What is the talker ID of this GPS receiver?
A popular GPS communication protocol is the one specified by NMEA (see here). Communication is done in "sentences", which start with $-- where ...
4
votes
2answers
906 views
Using a GPIO pin as a power source
I have an STM32F2 (reference manual here) which is connected to a GPS receiver through 5 pins. One of these pins is a power supply pin for the GPS.
All pins on the micro-controller are GPIO pins that ...
2
votes
3answers
229 views
GPS Data Accuracy on Inclines
I have a BU-353, and I am using it in a car. I want to use it to get a more accurate speed reading than RPM/wheel diameter calculation can give me. I am wondering how the incline of a slope, that the ...
11
votes
5answers
6k views
Why do GPS receivers have a 1 PPS output?
I was surprised to see that the GPS receiver I'm working with has a pin reserved for outputting a 1 PPS (Pulse Per Second) signal. What is the point of this? Can't the microcontroller easily ...
1
vote
2answers
535 views
Is it possible to use 2-way walkie talkie to locate position?
Basically, given no GPS is allowed, can we use walkie talkie to locate the position of a car / a person?
I am assuming the walkie talkie is using radio, not GPS-based.
What equipments will be ...
3
votes
6answers
982 views
Indoor Location Positioning
We are developing a mobile application for smartphones (Iphone, Android, BlackBerry, etc) and want to allow navigation at indoors.
We can buy and place indoor gps antennas but will this solve our ...
7
votes
13answers
2k views
What can I use to detect pinpoint location (inches) outdoors?
I am getting back in to EE after some time so please excuse my ignorance. I am looking for a way to detect pinpoint location outdoors to navigate a robot for a project with my sons.
Is there a low ...
2
votes
3answers
317 views
How to connect GPS module to usb cable
I need help with connecting this module with USB cable or serial cable. What do I need to connect? What channels?
EDIT:
Okay guys I see that you think that this gps in not so good. How about this ...
11
votes
4answers
899 views
How does the GPS scale and deal with potentially millions of requests per second and respond in real time?
Nowadays almost everyone who have owned a smartphone or some type of GPS device somewhere. These devices also seemly update in real time. How is the GPS satellite capable of responding to potentially ...
