Aero Week 8 Updates Robbie Mc Nally DAS

Aero Week 8 Updates Robbie Mc. Nally DAS & FPV

Budget Awarded $378 for SRG which is now available on a credit card

Research Found datasheets for Duck antennas Found alternatives for FPV and DAS 5. 8 GHz Cloverleaf 900 MHz Mad Mushroom/Airscrew Met with Professor Hedrick about Radio Link Budget Have questions for SAE Rules Forum 1 Typo and 2 Claifications Started looking into Arduino Servo Library

Soldering… Created DC wall adapter to power FPV receiver for testing Created charging cable for Li. Po battery Soldered stackable headers on all Arduino Shields Solder Arduino barrel adapter to accept Li. Po battery for testing

Data Acquisition System Setup Configured Xbee transmitter and receiver: Assigned same network ID Set destination and source fields Transmitted sample data (incrementing loop) to test connection Transmitted data from Arduino serial monitor to XCTU console and vice versa Reads data from MPL 3115 A 2 every 315 ms and transmits to Xbee dongle XCTU includes console viewer where I can read and log data

DAS Testing – Full spreadsheets on Drive Accuracy Testing up to 30 ft Measured vs Expected Elevation 35. 00 Range Testing: Stopped receiving data at ~500 ft on Seward Possibly test tomorrow in a plane Will need different antenna or transmitter/receiver with more power Researching options and talking to Professor Hedrick 30. 00 Actual Elevation (ft) 25. 00 20. 00 15. 00 10. 00 5. 00 0 -5. 00 5 10 15 20 Measured Altitude )(ft) 25 30 35

FPV System Testing Receiver Power Source: 12 V DC Wall adapter @ 300 m. A Transmitter Power Source: 11. 1 V 3 S 2200 m. Ah Li. Po Tested range on Seward Place and across Richmond Quad 1 st Test: Standard 5. 8 GHz Duck Antenna – Came with System 2 nd Test: 5. 8 GHz Cloverleaf Antenna – Borrowed from Blair Only tested both antennas to 1500 ft – ran out of Lo. S Cloverleaf antennas had clearer picture – less interference in analog signal Pair only costs $10 -25 worth the investment

5. 8 GHz FPV Testing Results • • Receiver on porch Transmitter walked down Seward Place Lo. S up to ~900 ft Quality loss when Russo was directly between Tx/Rx View from 100 ft (Slightly out of focus) Webster from 1500 ft

Next week… Meet with Professor Hedrick about antennas Go to field with Al and fly DAS if possible Calculate battery capacity needed and decide on battery system 1 for FPV Transmitter, 1 for DAS, and 1 for Receiver at Ground Station Move Servos wirelessly with XBees Possibly start working on Airspeed sensors if servos go smoothly