Video of Launch: The second half of the video is of smartphone audio synchronized with video, very cool! Please visit Greg’s post for more pictures and info. Comma Delimited File of Accelerometer Data.I am sure there is something better/faster but this seemed to work well for this launch. I chose My Tracks to do the GPS logging because of the logging rate and it integrates well with other GPS software. It lost GPS fix during the accent phase but quickly reacquired lock after chute deployment. I was quite surprised in how the phone GPS performed. It performed flawlessly from start to finish and sounded awesome! It was a disposable J425R-14A high powered rocket motor. Greg decided to try out a new rocket motor that he had never used before. Greg prepared the rocket while I prepared the ground station and prepped the payload. That capability was instrumental in starting and checking all the services prior to launch.įield conditions were excellent, although it was a little windy at times and very hot. I was able to control the phone screen through VNC and start the audio recording, Sensor logger, APRS and My tracks while it was sitting on the pad waiting for launch.

The ground station was connected via 802.11g while the rocket was sitting on the launcher. Note: You can view the Google Doc prepared for this flight with more detail.

Linksys Router with DD-WRT and Homebrew antenna.

APRSIS32, VNCViewer, UZ7HO SoundModem Software TNC.

SDR# tuned to the APRS frequency 144.390.

Laptop with a RTL-SDR dongle and USB GPS.

Map ground track using My Tracks for further analysis.

Use the on-board smartphone sensors to record audio and accelerometer data.

Use APRS for tracking using stock Ham radio equipment and smartphone.

Have a successful launch and recover (of course!).

It included the Mobilinkd bluetooth adapter, Baofeng Uv-5r HT and a eBay special android smartphone (appropriately from “Boost”). We finally got to launch it yesterday after a small delay due to field availability. Greg, N4KGL and I worked on a joint project to build and launch an APRS rocket payload.

No orbitron plugin in sdrsharp