20100523

Balloon project - Designing a GPS Board

We made more progress on the balloon tracking electronics this weekend. We tested out the Big Red Bee tracking transmitter and made an insulated, ruggedized package for it.

Fore the GPS-based tracker, we have settled on the Byonics Tiny Track 4 APRS system. Since many GPS units do not function above 60,000 feet elevation, we are going with the special "High Altitude Build" of the Inventek ISM300 GPS module.

This unit only comes as a tiny SMD module, so we are integrating the unit, a 25mm active-patch antenna, a MAX2323 driver IC, a backup battery, and assorted other bits into a custom circuit board. Here is the prototype so far:














The board is also almost reach to etch. I found a good Eagle Cad tutorial on making ground planes, and refined the design a bit:

The 2.0 version will probably be all SMD components, but this should get us going, as we have the through-hole versions of all of these parts on hand at the shop.

15 comments:

  1. This comment has been removed by the author.

    ReplyDelete
  2. I spotted your board while poking around to see who's already figured out a pcb for the ISM300 series gps. Have you had a chance to take it for a spin as of Oct 2011?

    ReplyDelete
  3. This comment has been removed by the author.

    ReplyDelete
  4. That GPS can be a great addition to the features of my car. I'll be happy if you show me where to get one.

    gps tracking

    ReplyDelete
  5. Thanks for sharing this post I like it and quite useful for me.
    GPS Tracking System

    ReplyDelete
  6. Map perusing may have been an issue on more established Garmin units however their most recent offering has transformed all that. The genuine magnificence is that the new Garmin remains blessedly uncomplicated and simple to explore. http://gpscustomerservice.com/

    ReplyDelete
  7. This comment has been removed by the author.

    ReplyDelete
  8. These days all you will need is a GPS receiver and a clear view of the sky to know where you are. Thanks to GPS tracking. GPS Tracker

    ReplyDelete


  9. GPS Map Updates provides comprehensive Map Update service for your GPS devices.
    If you want solutions to update your GPS device or update the map on your GPS,
    then we are the right place to be. Our experts will help you meet your needs
    and requirements by providing on-time update for your GPS device.
    http://www.mapupdate.co/garmin.php
    866-203-4364

    ReplyDelete
  10. Eliminates Paper Logs – The digital record is not subject to human error and makes the process of record keeping more in depth without any additional hassle. Omnitracs

    ReplyDelete

  11. This is really a nice and informative, containing all information and also has a great impact on the new technology. Thanks blog shop 23b for sharing it,

    I am also technical support expert at garmin GPS Support and my toll free contact number is +1866 830 4390

    ReplyDelete
  12. This comment has been removed by the author.

    ReplyDelete
  13. Thanks for sharing nice information its a very useful for me. if you are facing any issues in Garmmin Gps. Just call Garmin Support Number .

    ReplyDelete
  14. At present, GPS technology has stepped up to the more advanced level, and has several roles to perform in law enforcement, emergency services as well as in various commercial industries. Ranging from GPS vehicle tracking to GPS personal tracking and GPS kids tracking, GPS systems have addressed almost every possible need of the potential users. Electronic Logging Devices

    ReplyDelete
  15. Nice information .. I really liked it. If Yor are facing garmin map update problem then just visit this link :- https://www.skymapupdate.com/blog/free-garmin-map-update/

    ReplyDelete