Portable GPS tracker for patients with Alzheimer’s disease

We see many tracker devices that serve various purposes. Most of them are for fun, for securing things, but this one earns respect because it is used to track Alzheimer’s patients. This is quite problematic area for relatives who have such a patient. He can leave and then forget where to return. This little tracked device may help reduce the trouble of finding such people. LoganP2 shared his simple build where he uses Arduino micro, GSP breakout board and Adafruit FONA board for getting location from a distance. Everything is placed inside 3D printed box. It seems that after prototyping there are plans for making more compact and more ergonomic version. Continue reading

Running watch with GPS guidance

If running is part of your activity probably, you would like to know daily statistics. These features are available on many devices like smartphones or watches. But sometimes, you simply need a guide to tell if you are in the right direction. One way would be to use a GPS navigator with a planned route, but who would want to look at a screen all the time when you would enjoy re-view? So, students Joel and Kyle from Cornell ECE4760 class brainstormed the idea of building a GPS running watch that would give mechanical feedback about the waypoint. They used small motors to vibrate whether you are running along the planned route or you turned right or left. Prototype is equipped with a GPS module, Atmega1284 board, LCD, and SD card to store waypoints. Before you can use the device, first you need to create a path in Google Earth, then save this path as a KMZ file, which then needs to be uploaded to the GPS visualizer website where you can get an output text file which has to… Continue reading

Atmega8 based GSP alerter through SMS

Alex had previous experience with his GPS logger, so recently he decided to build another project called GPS alerter which would send SMS when device is located in a certain area. Device also is equipped with accelerometer which allows detecting movement, so it could activate GPS module and start getting data. This helps to preserve battery life as there is no need to check coordinates while it is at same coordinates. [youtube  https://www.youtube.com/watch?v=JNAqu732Uqw&w=468] For this project he uses Atmega8 microcontroller which read GPS data through serial port. To send SMS messages there is an old Nokia 3210 cell phone used which is fairly easy to interface. Continue reading

Interfacing GPS Module with AVR

GPS modem is a device which receives signals from satellite and provides information about latitude, longitude, altitude, time, etc. The GPS navigator is more famous in mobiles to track the road maps. The GPS modem has an antenna which receives the satellite signals and transfers them to the modem. The modem, in turn, converts the data into useful information and sends the output in serial RS232 logic level format. The information about latitude, longitude, etc. is transmitted continuously and accompanied by an identifier string. The connection of GPS modem with AVR microcontrollers shown in the circuit diagram. The ground pin of max 232 and serial o/p of the GPS modem is made common. Pin2 of MAX232 is connected to pin 3 of GPS modem and pin 3 of max 232 is connected to pin 2 of the modem. This type of connection is called a serial cross cable. Continue reading

AVR based GPS tracker

This is well documented AVR based GPS tracker project. AVR microcontroller talks to GPS module and records location data that can be later played along with aping program like Google Earth. By following build instructions, you’ll be able to interface a GPS module via three wires. Also there is a good explanation how to integrate stored location data with map software and see your track visually.   Continue reading

AVR Tiny based GPS locator

GPS device doesn’t have to be very complex. Simple Attiny2313 microcontroller can be used to read data from SR87 GPS module and display it to 2×16 alphanumeric LCD. As GPS module transmits data through serial interface it occupies only on wire so there is plenty space left for LDC, keyboard and buzzer. Keyboard is used to enter names for marked locations that are stored to EEPROM. Again, great fun project that almost pushes microcontroller to its limits. Continue reading