DroneFishing.com have come up with a really neat release mechanism to drop bait from a DJI Phantom 4, 3 Mavic and Inspire.
Here is the video that shows how to install this clever device.
How the Release Mechanism is Triggered
The release mechanism is wired into the front LED lights and is triggered from the app /controller by switching the LED lights on or off.
This process of switching the LED lights off can be an action programmed to trigger by pressing either the C1 or C 2 buttons.
Can the Release Mechanism affect the DJI Drone
This Bait Dropper was designed with the serious fisherman in mind taking every consideration to the DJI Phantom drone and its operation.
Both Phantom 3 and Phantom 4 utilize the landing legs for communication and navigation, on the Phantom 3 all four legs have light bridge antennas in and the one leg, has right at is bottom, the all important compass. On the Phantom 4, DJI added a second compass a little higher up on two of its legs.
When DJI designed the Phantoms they placed these as far away from the motors and any other electrical interference as possible, this is what gives the DJI drone such phenomenal range, stability and reliability.
DroneFishing’s bait dropper is the only release mechanism / device we have found that takes these factors into consideration, placing the electrical components high up on the drone away from the antennas and compasses minimising the chance of interference with the drone’s communication or navigation.
Also the release mechanism carries the load centrally below the gimbal, this ensures that all four props carry the load evenly, which increases the stability of the drone when carrying loads. The release mechanism also stays clear of the downward vision ultrasonic sensor’s and the camera itself.
The release mechanism is supposedly protected by international patents and design registrations. It weighs less than 50g in total, meaning that less stress is put on the drone for the same payload and if need be a heavier load can be carried.
It’s sleek very small (70x45x14mm) design also minimizes any interference with the aerodynamics of the drone when it is flying.
The release mechanism looks like a professional device that will not detract from the design of the DJI drone. When installed it can be left attached to the drone and the release bar can also double as a gimbal guard.
In the video you can see installation takes less than 5 minutes using basic tools.
None of the flying lights are obscured and the location of the release mechanism unit high on the drone fuselage allows the drone to be placed back into the original packaging for transportation without modifications to the packaging.
What Load can be Carried
The Phantom 3 is more forgiving than the Phantom 4 and can carry a slightly heavier load despite the P4 having stronger motors. Max loading is roughly 600g in total, any more and you risk losing your drone.
DroneFishing recommends lighter loads not going over 500g, this is to minimize stress on the drone itself.
Obviously the lighter the load the better and the longer the life of the drone itself. When lifting any mass the drone will not fly 28min on a battery charge whilst carrying any additional loads.
Any fishing line, will be real drag, and is constantly affected by wind speed, flying speed of the drone, direction and altitude.
A telltale sign of a too heavy load is the drone will start to jojo spinning back and forth. This is caused because a drone uses prop yaw to stabilize itself, if the motors are over revving there is no more yaw thrust left and your drone can not stabilize itself.
If this happens, the advice is to drop the load immediately and your drone should stabilize.
It will be interesting to see if this is used for fishing in Cornwall, but we can see the idea of the release mechanism having other commercial aerial photography applications and uses besides fishing.