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Apr
30

A Simple And Inexpensive GPS Navigation Device

arduino, arduino hacks, bitmap, BMP, display, geotiff, Github, gps, LCD, navigation, TFT, uno Commenti disabilitati su A Simple And Inexpensive GPS Navigation Device 

There are plenty of GPS navigation units on the market today, but it’s always fun to build something yourself. That’s what [middelbeek] did with his $25 GPS device. He managed to find a few good deals on electronics components online, including and Arduino Uno, a GPS module, and a TFT display.

In order to get the map images on the device, [middelbeek] has to go through a manual process. First he has to download a GEOTIFF of the area he wants mapped. A GEOTIFF is a metadata standard that allows georeferencing information to be embedded into a TIFF image file.  [middelbeek] then has to convert the GEOTIFF into an 8-bit BMP image file. The BMP images get stored on an SD card along with a .dat file that describes the boundaries of each BMP. The .dat file was also manually created.

The Arduino loads this data and displays the correct map onto the 320×240 TFT display. [middelbeek] explains on his github page that he is currently unable to display data from two map files at once, which can lead to problems when the position moves to the edge of the map. We suspect that with some more work and tuning this system could be improved and made easier to use, of course for under $25 you can’t expect too much.


Filed under: Arduino Hacks
Dic
09

ALCAM-OEM – Serial camera module

arduino, BMP, camera, i2c, jpg, SPI, uart Commenti disabilitati su ALCAM-OEM – Serial camera module 

photo-1024x768

Serial camera module that captures time-lapse and stop-motion videos plus images to uSD card. Use with any micro like mbed and Arduino.

ALCAM allows any embedded system with a serial interface (UART, SPI or I2C) to capture JPG/BMP images and also to record them right onto an SD card. Also, ALCAM gives you the ability to create time-lapse and stop-motion AVI videos and save them directly to the SD card. All done through a set of simple and well documented serial commands. ALCAM can also capture images and videos though a special pin, without the need to send any commands.

ALCAM-OEM – Serial camera module - [Link]



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