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Writer's picturecassidyvoorhees

Component Three: Chasing Fire, Drone Video

Updated: Apr 29, 2021

Although I do not have a drone myself, I have friends that have some. If I can borrow or use one with a friend, I can get footage of places that I otherwise would not be able to see. I expect retrieving some footage would take a few hours. Drone footage is important because we can see things beyond what we usually would. I think of fires in California; having a drone that can record where fires are might be the key to stopping them from spreading at an alarming rate. (Catch them before the spread). If the weather permits and is not too dry, I would ideally make a somewhat large bonfire and see if my friend and I can spot the smoke from a distance. For this, a long-range drone would be ideal, and I think the most accurate detection I can get ahold of would be in a shorter radius.


I am waiting on my friend who agreed to help, that owns a drone for some free time. I will mimic a small series of fires, one big enough to create enough smoke that a tree on fire would roughly create. I hope to catch the smoke from the drone view; this simulation can help see fires through visual smoke detection before they spread out of control.



Unfortunately, we couldn't make the fire as big as we anticipated due to the burn ban. That was the only challenge as far as acquiring the best footage we can. However, once the burn barrel we used had a good fire, I threw a bunch of wet leaves and other living plant material to create a sound cloud of smoke, and that was when we were able to catch some decent footage. Overall, building a fire and getting good shots took around an hour and a half total. If drones were to be implemented and used to scout fires, they would need long-range capabilities for it to be worth using.


However, for the sake of the project, I think this is pretty solid. There were a couple of barriers, like the drone running low on battery. Luckily my friend had a backup battery pack.

The footage above is everything edited down to get the best possible footage the drone could capture. Overall I'm pleased with how this project turned out. In the future, I would like to see a drone with enhanced range capabilities, and a better camera find smoke from a greater distance.


Mavic Mini Specs


Takeoff Weight [1]

  • 249 g

Dimensions

  • Folded: 140×81×57 mm (L×W×H) Unfolded: 159×202×55 mm (L×W×H) Extended (with propellers): 245×289×55 mm (L×W×H)

  • Diagonal Distance

  • 213 mm

Max Ascent Speed

  • 4 m/s (S Mode) 2 m/s (P Mode) 1.5 m/s (C Mode)

Max Descent Speed

  • 3 m/s (S Mode) 1.8 m/s (P Mode) 1 m/s (C Mode)

Max Speed (near sea level, no wind)

  • 13 m/s (S Mode) 8 m/s (P Mode) 4 m/s (C Mode)

Maximum Takeoff Altitude

  • 3000 m

Max Flight Time

  • 30 minutes (measured while flying at 14 kph in windless conditions)

  • Max Wind Speed Resistance

  • 8 m/s (Scale 4)

Max Tilt Angle

  • 30° (S Mode) 20° (P Mode) 20° (C Mode)

Max Angular Velocity

  • 150°/s (S Mode) 130°/s (P Mode) 30°/s (C Mode)

Operating Temperature Range

  • 0° to 40°C (32° to 104°F)

Operating Frequency[2]

  • Model MT1SS5: 5.725-5.850 GHz Model MT1SD25: 2.400-2.4835 GHz, 5.725-5.850 GHz

Transmission Power (EIRP)

  • Model MT1SS5 5.8 GHz: <30 dBm (FCC); <28 dBm (SRRC) Model MT1SD25 2.4 GHz: <19 dBm (MIC/CE) 5.8 GHz: <14 dBm (CE)

GNSS

  • GPS+GLONASS

Hovering Accuracy Range

  • Vertical: ±0.1 m (with Vision Positioning), ±0.5 m (with GPS Positioning) Horizontal: ±0.3 m (with Vision Positioning), ±1.5 m (with GPS Positioning)


Gimbal

Mechanical Range

  • Tilt: -110° to 35° Roll: -35° to 35° Pan: -20° to 20°

Controllable Range

  • Tilt: -90° to 0° (default setting) -90° to +20° (extended)

Stabilization

  • 3-axis (tilt, roll, pan)

Max Control Speed (tilt)

  • 120°/s

Angular Vibration Range

  • ±0.01°


Sensing System

Downward

  • Operating Range: 0.5-10 m

Operating Environment

  • Non-reflective, discernable surfaces Diffuse reflectivity (>20%) Adequate lighting (lux>15)


Camera

Sensor

  • 1/2.3” CMOS Effective Pixels: 12 MP

Lens

  • FOV: 83° 35 mm Format Equivalent: 24 mm Aperture: f/2.8 Shooting Range: 1 m to ∞

ISO Range

  • Video: 100-3200 (Auto) 100-3200 (Manual) Photo: 100-1600 (Auto) 100-3200 (Manual)

Shutter Speed

  • Electronic Shutter: 4-1/8000s

  • Still Image Size

  • 4:3: 4000×3000 16:9: 4000×2250

Still Photography Modes

  • Single shot Interval: 2/3/5/7/10/15/20/30/60 s

Video Resolution

  • 2.7K:2720×1530 24/25/30 p FHD:1920×1080 24/25/30/48/50/60 p

Max Video Bitrate

  • 40 Mbps

Supported File System

  • FAT32(≤32 GB) exFAT(>32 GB)

Photo Format

  • JPEG

Video Format

  • MP4 (H.264/MPEG-4 AVC)


Remote Controller & Video Transmission

Operating Frequency

  • Model MR1SS5: 5.725-5.850 GHz Model MR1SD25: 2.400-2.4835 GHz, 5.725-5.850 GHz

Max Transmission Distance (unobstructed, free of interference)

  • Model MR1SS5 5.8 GHz: 4000 m (FCC); 2500 m (SRRC) Model MR1SD25 2.4 GHz: 2000 m (MIC/CE) 5.8 GHz: 500 m (CE)

Operating Temperature Range

  • 0° to 40°C (32° to 104°F)

Transmission Power (EIRP)

  • Model MR1SS5 5.8 GHz: <30 dBm (FCC); <28 dBm (SRRC) Model MR1SD25 2.4 GHz: <19 dBm (MIC/CE) 5.8 GHz: <14 dBm (CE)

Battery Capacity

  • 2600 mAh

Operating Current/Voltage

  • 1200 mA 3.6 V (Android) 450 mA 3.6 V (iOS)

Supported Mobile Device Size

  • Max length: 160 mm Max thickness: 6.5-8.5 mm

Supported USB Port Types

  • Lightning, Micro USB (Type-B), USB Type-C

Video Transmission System

  • Enhanced Wi-Fi

Live View Quality

  • 720p/30fps

Max. Bitrate

  • 4 Mbps

Latency (depending on environmental conditions and mobile device)

  • 170-240 ms


Charger

Input

  • 100-240 V, 50/60 Hz, 0.5A

Output

  • 12V 1.5 A / 9V 2A / 5V 3A

Rated Power

  • 18 W


Intelligent Flight Battery

Capacity

  • 2400 mAh

Voltage

  • 7.2 V

Max Charging Voltage

  • 8.4 V

Battery Type

  • Li-ion 2SEnergy

  • 17.28 Wh

Net Weight

  • 100 g

Charging Temperature Range

  • 5° to 40°C (41° to 104°F)

Max Charging Power

  • 24 W


Intelligent Flight Battery (1100 mAh)

Capacity

  • 1100 mAh

Voltage

  • 7.6 V

Max Charging Voltage

  • 8.7 V

Battery Type

  • LiPo 2S

Energy

  • 8.36 Wh

Net Weight

  • 50 g

Charging Temperature Range

  • 5° to 40°C (41° to 104°F)

Max Charging Power

  • 18 W


Phone APP for flight use

Name

  • DJI Fly

Required Operating System

  • iOS v10.0 or later Android v6.0 or later




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