Eachine Aurora 90, the test

The test ? In fact, the preview of this device, published here, gathers pretty much everything you need to know about the Aurora 90. This test is not really one: I will point out the positives and the points Negative after dozens of flights, enough to correct some problems, and answer the question "Should we buy it? ". Note that the device was given to us by the Banggood shop. As usual, tell us if you think the practice has influenced our judgment.

The positive points

The aircraft has an amazing fishing, very nice when you launch in a little fast outside or in the gym. The flight is rather healthy, although sometimes the reactions are those of a nano racer brushed, with swings that Acro mode does not eliminate. No effect Jello, the camera does not vibrate - unless it is disconnected from its support, held by a kind of membrane that acts as a shock absorber. It is necessary to position the camera so that it does not lean. The default settings for Betaflight are very nice, there is no need to touch them. The Betaflight OSD is convenient for monitoring battery voltage and flight time. The rest of the tools, like the artificial horizon (inverted, it is a mistake, on the machine in test), does not serve much. Simply disable the display in Betaflight. The OSD makes it possible to do it directly from the remote control, it is particularly convenient! Note that the two carbon blades protect the antenna of the camera, and can handle nice shocks. But then, is this the perfect brushless Tiny Whoop?

No Unfortunately

Here, the engines are enhanced by a spacer of AXC.

I begin the review of the defects with a concern ... that I did not meet. In steady flight, (Angle), many pilots experienced a strong drift. Recalibration does not correct the problem, but some pilots have indicated that the flight controller isolation improves the situation. Another boredom? The bearings holding the outer edges of the propeller guards are placed too close to the propellers. The result ? When the throttle is fully thrown, a propeller may touch these bearers. The punishment is immediate: one of the blades breaks clean, the Aurora 90 is unbalanced, and it is the crash. Still a concern? The propellers almost touch the propellers, there is no more than a millimeter at the end of the blades. The result ? If you hit an obstacle, the protection deforms slightly, the propeller touches it ... and breaks clean. Even punishment: it is the crash (but in general the touch is already enough to make the device fall).

Correction of defects

Furious FPV 1935-4 propellers are shorter than original ones.

To prevent the blades from striking the bearers, the solution is to raise the engines. You can tinker a support with the means of the edge. For my part, I preferred the Spacers sold by AXC, the creator of the Halo of which the Aurora 90 is the copy. They were at 1 pound the 4, their price seems to have increased. Carbon, of negligible weight, supplied with screws, they enhance the motors by one millimeter. This is enough to correct the problem. To avoid the propellers touching the protections, I chose to replace the original ones, which did not last long, by quadruple models 1935 of Furious FPV. They are available at Studiosport, at 4.50 € the 4. Marigold corrected!

Still defects?

They are linked to the Flysky version of the Aurora 90. The receiver only operates in conventional AFHDS mode (step 2A), which deprives Failsafe adjustment. Despite all my efforts in Betaflight, I have not been able to achieve engine shutdown in the event of radio link loss. More troublesome, I experience very frequent radio link cuts, all of which last for 1 to 3 seconds. An eternity when one is in flight, and they usually end in a crash. I tried to remove the radio antenna from the other components, to disconnect and reconnect the pigtail plug, to freeze it with hot glue. Nothing has been done. It seems that many drivers of the Fkysky version experience the same problem. And with the FrSky and DSM2 / DSMX receivers? Cases have been reported on RCgroups, but it seems that the concern is limited to Flysky receptors.

That's not all…

The microUSB connector for accessing the flight controller with Betaflight Configurator is incorrectly placed. It is impossible to access even with an ultra thin cable: a propeller protection is in front. To access it, rotate this protection. To do this, remove the screw in front of the USB connector. But a screwdriver, even fine, does not pass, the propeller is in front. It is actually more efficient to remove the motor completely to have access to the screw that allows to move the protection. 

Additionally, if you happen need to purchase some rc drone parts, you can search via Banggood website, which is one of the wholesale platform to provide affordable prices, such as 3-axis gimbal gopro, mini multirotor, etc.