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As many of you that have purchased Eggtimer altimeter kits know, I have developed a simple GPS/RF tracking system. It's called the Eggfinder, there's a transmitter that goes in your rocket and a receiver that stays on the ground. Basically, it streams NMEA 0183 serial GPS data to your ground device (laptop, tablet, possibly Android smartphone), and can be used to track your rocket in flight and more importantly to tell you where it went so you can get it back. You can use just about any mapping software with it that can take NMEA GPS data input; the only restrictions are what your device will handle.
The transmitter runs on the license-free 900 MHz band, the module that I use (the Hope RF HM-TRP) is the same one that's used in the popular 3DR radios. The firmware in the radio modules is Hope RF's standard firmware; this is to ensure that the radio complies with the FCC's spectrum requirements as tested by Hope RF.
Details are at https://www.eggtimerrocketry.com/page21.php , cost for the kit will be under $100. Availability should be sometime this Spring; I'm finishing up the documentation and waiting for parts.
Cris Erving
Eggtimer Rocketry
The transmitter runs on the license-free 900 MHz band, the module that I use (the Hope RF HM-TRP) is the same one that's used in the popular 3DR radios. The firmware in the radio modules is Hope RF's standard firmware; this is to ensure that the radio complies with the FCC's spectrum requirements as tested by Hope RF.
Details are at https://www.eggtimerrocketry.com/page21.php , cost for the kit will be under $100. Availability should be sometime this Spring; I'm finishing up the documentation and waiting for parts.
Cris Erving
Eggtimer Rocketry