GPS Receiver with Antenna -RS232 Serial/USB

It is a high gain GPS Receiver-RS232 made with ultra small High gain third generation POT (Patch Antenna On Top) GPS  module. There is no prior configurations required , just apply power (9V) by DC adpater or to RMC Connector from a battery or USB , your data (NMEA 0183) is ready at TX pin.
This is a stand alone GPS Module and requires no external components .It has a very compact and easy to integrate design with the ultimate tracking performances. It is also ideal for those who wishes to plug-and-play GPS receiver module into their small form factor design. It can be directly connected to PC through USB (No separate Power Required) or RS232 (COM Port), MAX232 level converter IC required to connect microcontroller/Arduino.

The GPS chipsets inside the module are designed by MediaTek Inc., which is the world’s leading digital media solution provider and largest fab-less IC company in Taiwan. The module can support up to 66 channels. The GPS solution enables small form factor devices. They deliver major advancements in GPS performances, accuracy, integration, computing power and flexibility. They are designed to simplify the embedded system integration process.

To determine the location of the GPS satellites two types of data are required by the GPS receiver: the almanac and the ephemeris. This data is continuously transmitted by the GPS satellites and your GPS receiver collects and stores this data.The data received is just ASCII text and varies in precision. Every sentence begins with a ‘$’ sign, has about 80 characters and ends up with a carriage return/line feed sequence. Sentences are mostly framed in single lines (may run over to multiple lines sometimes) and the data items in each sentence are separated by commas.As the module provides current time, date, latitude, longitude, speed, altitude and travel direction / heading among other data, so it can be used in a host of applications, including navigation, tracking systems, fleet management, mapping and robotics.

Features:

  • MediaTek MT3329 Chipset, L1 Frequency, C/A code, 66 Channels
  • RS232 Interface via DB9 Connector
  • USB MiniB type connector for USB interface and Power
  • 9 VDC supply @ 55 mA (typical)
  • Data output Baud rate: 9600 bps(Default)
  • Standard NMEA0183 output format
  • Low Power Consumption: 55mA @ acquisition, 40mA @ tracking
  • High Sensitivity, -165 dBm, TCXO Design , superior urban performances
  • Position Accuracy: <3.0M 2D-RMS
  • DGPS (WAAS/EGNOS/MASA/GAGAN) Support
  • Multi-path Compensation ; E-GSM-900 Band Rejection
  • Cold Start is Under 36 seconds (Typical)
  • Warm Start is Under 34 seconds (Typical)
  • Hot Start is Under 1 second (Typical)
  • Max. Update Rate : 10Hz (Default: 1 Hz)

Specifications: 

 PIN Diagram:

GPS -RS232 /USB PIN descriptions are as below

Layout:

 

How to Test:

1. Reading GPS data through RS232 port:

  • Connect the GPS receiver to your PC using a RS232 DB9 cable. Normally Desktop systems might be having a DB9 RS232 port available,So you can directly connect the product to the system using that port, and appropriately power the module using the desired power source (9V),connection diagram is shown below.
  • Choose the appropriate COM port that got assigned to the RS232 DB9 serial cable  in your system by looking into the device manager like shown below.
  • By measuring distance  from four satellites four spheres are drawn from earth to each satellite. Those spheres only intersect at only one earth point (your location).  If there were only 3 satellites, there is more then one place the spheres intersect which is why the system needs that forth satellite so a bad calculation can not be made. The GPS receiver needs 4 satellites to work out your position in 3-dimensions. In  GPS Receiver-RS232/USB “3D LED”(Yellow) is blinks in every fraction of seconds to indicate  weak signal from satellites.  When the GPS receiver gets stronger signal the “3D LED” is turned off. The GPS receiver  will send raw GPS data based on NMEA 0183 protocol  to the PC.
  • Here sample test was done using GPRMC header . GPRMC tells the latitude, longitude, speed, time and date.  The details of GPRMC message is shown below.
  • When GPS receiver get the weak signal,then the received GPS data  is as shown in the figure.The data  ‘V’ on the GPRMC header indicate a weak  signal from the satellite and  GPS Receiver-RS232/USB “3D LED”(Yellow) will blinks in every fraction of seconds.
  • When the GPS receiver gets stronger signal  from satellite the “3D LED” is turned off,the GPS data received is as shown in the figure.The data  ‘A’ on the GPRMC header indicate the strong  signal from the satellite.

2. Reading GPS data through USB port:

  • When making connection from a Laptop or PC using the USB port, no need to give any external power as the power for the Device operation shall be derived from the USB  itself. When working out  through USB no other connection from the device is required,connection diagram is shown below.
  • The first thing you want to do is installing the GPS Receiver-RS232/USB VCP driver (Virtual Com Port driver) for your PC  because  Virtual COM port (VCP) makes USB communication with GPS Module .The chip on the board translates the serial data coming from a device into USB data and vice-versa. For a quick tutorial on How to install USB driver for rhydoLABZ  GPS Receiver-RS232/USB   please Go through the link.
  • Once you are done with all these procedures , Choose the appropriate COM port that got assigned to the USB in your system by looking into the device manager like shown below you can see USB serial COM3 got selected:
  • You can check the GPS data With the help of Hyperterminal ,rhydoLABZ Tracking Software or Mini GPS Tool.

3. Test your  GPS Receiver-RS232/USB  with rhydoLABZ Tracking Software

 

4.  Test your GPS Receiver-RS232 Serial/USB with  Arduino

  • When interfacing   GPS Receiver-RS232 Serial/USB with Arduino need level shifter (max232 ic)because microcontroller and GPS Receiver-RS232 Serial/USB are different logic levels,connection diagram is shown below.
  • Program is shown below.

  • When Arduino board  received GPS data,the data printed on serial monitor  is as shown in the figure.

 

5. Test your GPS GPS Receiver-RS232 Serial/USB with  PIC 16F877A

  • When interfacing   GPS Receiver-RS232 Serial/USB with PIC 16F877A need level shifter (max232 ic)because microcontroller and GPS Receiver RS232 Serial/USB are different logic levels,connection diagram is shown below.
  • Program is shown below.
  • When PIC16F877A  received GPS data,the data printed on serial monitor  is as shown in the figure.

Resources:
Schematic
Mini GPS User Manual
Mini GPS Tool
rhydoLABZ Tracking Software (Windows)

How to Buy:Click here to buy GPS Receiver with Antenna-RS232 Serial/USB

Support:Please share your ideas with us, visit our forum for discussion.

Frequently Asked Questions(FAQ):Q. Where do we mount GPS?
Ans. GPS data available around the world. The GPS receiver will need to have a clear View of sky so that the GPS receiver can triangulate at least three satellites. We may find problem receiving signals in indoor area. The GPS signal may blocked by metal, deep forest, mountains etc.

Q. Do we need net connection to work GPS?
Ans. No. we don’t need internet connection for GPS data reception.

Q.Do we need net connection to work GPS Receiver-RS232/USB  with rhydoLABZ Software.
Ans. Yes we need net net connection to work with rhydoLabz Software.

Q . Is GPS Receiver-RS232/USB need external antenna?
Ans. No, the module is made with ultra small High gain third generation POT (Patch Antenna On Top) GPS module.

Q.Is GPS Receiver-RS232/USB require external power?
Ans. Reading GPS data through RS232 port requires external power.When we connect  GPS Receiver-RS232/USB  through USB requires no external power,Power is taken from USB port itself.

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