Gate Review P14231 - UAV Aerial Imaging Spencer Hanson | Reed - PowerPoint PPT Presentation

Gate Review P14231 - UAV Aerial Imaging Spencer Hanson | Reed Abraham | Alex Klymkow | Aaron Willbee | Tim Fratangelo

Agenda ● Canon Camera Options & Recommendation ● Aircraft Recovery Assist System ● GoPro Wifi Test Results ● Receiver Recommendations ● MSD II Plan

Canon Camera Options ● All CHDK Compatible Canon ● 7 cameras out of Canon’s current Cameras: lineup are supported by the ○ CHDK http://chdk.wikia.com/wiki/Template: Supported_Cameras ● CCD sensor cameras: ● We limited our choices to those ○ A4000IS currently in Canon’s product line ○ A2400IS ○ Improved technology ○ A2300 ● CMOS sensor cameras: ○ S110 ○ SX260HS ○ ELPH320HS ○ ELPH110HS

CCD Cameras A4000IS ($115): ● 3.75 x 2.22 x 0.96 in., 5.11 ounces ● 8x zoom A4000 IS, A2400 IS, A2300 IS A2400 IS ($95): ● All utilize the same “DIGIC 4” image ● 3.72 x 2.22 x 0.84 in., 4.97 ounces processor ● 5x zoom ● All have a 16.0 MP CCD sensor ● Touchscreen ● All have a 28mm lens A2300 ($88) ● 3.72 x 2.13 x 0.79 in., 4.41 ounces ● 5x zoom

CMOS Cameras S110 ($219) ELPH320 HS ($200) ● 12.1 MP ● 16.1 MP ● 3.89 x 2.32 x 1.06 in., 6.98 ounces ● 3.68 x 2.24 x 0.82 in., 5.11 ounces ● 5x zoom ● 5x zoom ● Built-in Wifi ● Touch screen SX260 HS ($219) ELPH110 HS ($214) ● 12.1 MP ● 16.1 MP ● 4.19 x 2.40 x 1.29 in., 8.15 ounces ● 3.67 x 2.24 x 0.79 in., 4.76 ounces ● 20x zoom ● 5x zoom

Camera Recommendation Expensive: Less Expensive: ● ELPH110 HS ($214) ● A300 ($88) ○ 16.1 MP CMOS ○ 16.0 MP CCD ○ 3.67 x 2.24 x 0.79 in., 4.76 ○ 3.72 x 2.13 x 0.79 in., 4.41 ounces ounces No appreciable difference for our application - recommend purchase on price point

Recovery Assist System Lost Model Alarm LED Strobe ● Assists in location of lost aircraft by ● Assists in location of lost aircraft by providing auditory cues. providing visual cues. ○ Passive (dumb) and Active (user ● Configuration: control) alarms ○ Pre-soldered with easy ○ 85db mounting ○ $8.00 ea. ○ 50mA operational draw ○ 14mm diameter, 14mm tall ○ 3-6V operational voltage - servo ○ Operating Voltage: 3V - 9V current ○ 20mA draw when sounding ○ Power Circuitry Included ○ Plugs directly into Rx ○ Cost: ~$10 ○ Plugs directly into Rx or APM ~$25 worth of parts can be the difference between lost & found.

GoPro Wifi Test Results ● Test conducted for 5 minutes at ~120’ separation ○ No faults observed - servo and throttle tested ■ Due to relative signal strength ● Future test (when weather improves) ○ Multiple 5 minute test at various ranges No amount of testing will rule out possible failure due to interference

Receiver Recommendation ● Tactic Tx/Rx combo can be used for basic flight tests ○ Does not allow for use of “Return Home” function ○ Tactic is a “parkflyer” radio ● Recommend purchasing Spektrum AR6210 for testing with equipment (~$70) ○ Utilize Aero Design’s DX6i Tx ○ Includes a “satellite receiver” for long range transmission fidelity ○ DX6i has 3-position switches, allowing for “Return Home” function to work Higher quality receiver is an easy way to mitigate signal loss risk at range

MSD II Project Plan Major Toll Gates: 1. All ME work done - Feb. 15 2. Basic Camera Trigger - Feb. 22 3. Ready to fly - Mar. 1 4. Aircraft Trimmed w/o weight - Mar. 15 5. Aircraft Evaluated w/ load - Mar. 29 6. APM Functionality verified - Apr. 12 7. Full System Function verified - Apr. 26 8. System Enhancement - May 10

Backup Slides

gentWIRE-USB Pin Name Cable color Description • Micro-USB cable • End cut off 1 VCC Red +5 VDC • Insulation removed 2 D- White Data - • Female header pin attached 3 D+ Green Data + • Attach to micro controller 4 GND Black Ground

Example Ubasic code : ch1up while 1 print "Ch1Up-Shoot"; k do set_zoom s k = get_usb_power shoot until k>0 sleep 1000 if k < 5 then gosub "ch1up" return if k > 4 and k < 8 then gosub "ch1mid" if k > 7 and k < 11 then gosub "ch1down" if k > 10 and k < 14 then gosub "ch2up" if k > 13 and k < 17 then gosub "ch2mid" if k > 16 and k < 20 then gosub "ch2down" if k > 19 then print "error" wend end

Cannon Dev. Kit http://copter.ardupilot.com/wiki/common-apm-to-chdk-camera-link-tutorial/

Process • Download STICK: Simple Tool for Installing CHDK (Canon Hacker Development Kit) • Take a picture with the camera - drop into STICK • Follow STICK instructions to install correct CHDK version • Write script in UBASIC and upload to SD card using CHDK • Attach camera to APM using gentWIRE-USB • Verify program

Technical Specifications A2200 Gopro Sensor Type CCD CMOS (MP) 14 11 Zoom 4 1 ISO 1600 not stated Recording 1280x720 1920x1080 Weight 135g 73.7g Dimensions 93.2x57.2x23.66 mm 60.325x41.275x30.1625 Image Compression jpeg jpeg

Risks Comparison Likelihood Severit Description Consequences Causes L*S Description Consequences Causes Likelihood Severity L*S y the hero port is locked by a recent The Hero Bus The firmware The software interface wires must be soldered to firmware update, or the bus simply A new firmware 1 will not interface 3 2 6 hack will will not work, hard wired the buttons on the camera will not respond to any input with auto-pilot 1 update is on the 1 3 3 signals, or give any output signals. not function on solution will have to be camera camera used short circuit or to much voltage The Gopro new camera must be 2 applied to bus, battery fully 3 3 9 breaks acquired drained, Canon Camera new camera must be plane crashed, usb 2 1 3 3 breaks acquired malfunction The Gopro will not take continuous image capture 3 cannot solder wires to buttons 1 3 3 pictures on must be used command Camera will not work, or Learning the Insufficient 3 has a reduced 1 3 3 time it takes to take a picture, any Software documentation Camera delay causes error in orientation functionality 4 inherent software delays, delay in 1 1 1 and location recording signal from auto pilot lose a single run of data bad SD card, a short of some kind, bad SD card, a 5 sd card breaks 1 1 1 data fault 4 sd card breaks lose a single run of data short of some kind, 1 1 1 data fault no longer connected to a crash, improper mounting, proto-board 6 camera, and hence no carelessness while testing or 1 3 3 breaks a crash, improper more photo-trigger dismantling mounting, carelessness while no longer connected to a loose solder joint, a dry solder camera, and hence no usb cable testing or 7 wire disconnect joint, vibration of the plane shaking 3 1 3 5 new one must be made 1 3 3 more photo-trigger, only breaks dismantling, general a wire loose for one run, or until fixed wear and tear or improper original no longer connected to creation EEPROM camera, and hence no small power surge, static shock, 8 2 1 2 breaks more photo-trigger, only small impact, desoldered for one run, or until fixed

gentWIRE-USB Switch position PWM (ms) USB power (ms) Channel 1 up 1,900 ms <50 Channel 1 mid 1,500 ms >40 and <80 Channel 1 down 1,100 ms >70 and <110 Channel 2 up 1,900 ms >100 and <140 Channel 2 mid 1,500 ms >130 and <170 Channel 2 down 1,100 ms >160 and <120

Final Cost Breakdown Item Cost Item Cost A2200 Canon $97 Gopro $299 Camera gentWIRE-USB $44 Breakout $40 Board Total $141 $339

Benefits ● Decreased Risk ● Potential expansion of functionality

Remote 2.4 GHz - GoPro Bluetooth remote control frequency 2.4 GHz - Aircraft Radio Control (manual control channel) frequency 10 cm absorption foam 8 cm Remote Metal Shielding Camera

Homemade Alarm ● 88 db ● 5 volt, 85mA ● Buzzer: ~$4 ● Logic components: ~$2 ● Total: ~$6 Pros: ● We decide form factor Cons: ● Waste of time ● More expensive

Solution 1- Timed Sounding

Solution 2- Fault Sounding

Homemade Locator Light Make our own ● 400mA per LED ● 3 425 lumen LED, ~$8 ● Power circuitry, ~$5 ● Mounting PCB, ~$5 ● Wiring ~$2 ● Total ~$20 Pros: ● We decide form factor Cons: ● Waste of time ● More expensive