Introduction
Eachine Q90C is essentially a simplified version of the previous Q90 model. Unlike its predecessor, the Q90C drone reaches the consumer in the RTF package, to be more precise, the default package includes control equipment and FPV goggles (you can buy a drone with or without goggles). Despite the fact that some features of the Q90C were partly eliminated, it is worth noting that the presented model turned out to be more practical, especially for those who first began to explore the world of drones. About what the updated Eachine Q90C has gained and what has lost further in our review.
Peculiarities
- Custom version of the F3 flight controller
- Compatibility with Betaflight configurator
- Powerful brushed 2S motors 8520
- Battery 7.4v 300mAh 25C
- 1000TVL FPV camera
- 8-channel VTX 25mW
- FPV goggles VR006 (for Goggles)
- 3-bladed 44mm rotors
- Flight time 6 minutes
- 3 × flight modes (including Acro mode)
- Low Battery Alert
- Signal Loss Alert
- Drone weight (with battery) 60 grams
Equipment
Eachine Q90C is available in two configurations with and without FPV goggles.
The set without glasses will include:
- Quadcopter Eachine Q90C
- 2.4GHz control equipment (power supply from 4 × AA sold separately)
- Drone battery 7.4V 300mAh LiPo (with micro LOSI connector)
- USB charger
- 4 × rotors (2 CW/2 CCW)
- 4 × spare rotors (2 CW/2 CCW)
- 4 × protection screws
- Main screw wrench
- 3 × Rubber bands for fixing the battery
- 2 × 3M double sided tape
- User’s Manual
Glasses set will include:
- Quadcopter Eachine Q90C
- 2.4GHz control equipment (power supply from 4 × AA sold separately)
- Drone battery 7.4V 300mAh LiPo 25C with micro LOSI connector
- USB charger
- 4 × rotors (2 CW / 2 CCW)
- 4 × spare rotors (2 CW / 2 CCW)
- 4 × protection screws
- Main screw wrench
- Eachine VR006 FPV Goggles
- glasses antenna
- AV cable
- Glasses charging cable
- 2 × alcohol wipes (for glasses screen care)
- 3 × Rubber bands for fixing the battery
- 2 × 3M double sided tape
- User’s Manual
Appearance
Specification
Drone
Brand
:
Eachine
Model
:
Q90C
Flight
controller
:
Custom version of SP Racing F3
Motors
:
collector 2S motors 8520
Video TX:
8ch 5.8GHz VTX 25mW
Camera:
1/3″CMOS 1000TVL
FOV:
110°
System
chromaticity
:
PAL
Food
drone
:
7.4V 300mAh LiPo 25C with micro LOSI connector
Corner
inclination
cameras
:
not adjustable
Distance
FPV
removal
:
120 meters
Time
flight
:
6 minutes
Carriers
screws
:
three-bladed 44mm
Dimensions
drone
:
88×58×40mm
Frame
:
90mm
materials
performance
:
plastic
The weight
With
battery
:
60 grams
Working
temperature
:
-10℃ to +40℃
FPV Goggles Eachine VR006
Single Antenna Version
Dimensions
:
138×129×79mm(without antenna)
The weight
:
165 grams
Diagonal
display
:
3 inches
Permission
:
500×300 pixels
Antenna
connector
:
RP-SMA
Working
voltage
:
1S battery (3.7-4.2v)
Worker
current
:
350-450mA
Sensitivity
reception
:
-95dBm
Food
:
built-in type 3.7V 500mAh
Time
work
:
1 hour
Auto search
channels
:
Yes
Language
menu
:
English
Functions
OSD:
Current glasses battery voltage / AV signal frequency
Video output
:
AV IN
Equipment
Working
frequency
:
2.4GHz
controlled
distance
:
≥120 meters
Food
:
4 × AA (purchased separately)
Motors
Eachine Q90C is equipped with powerful 8520 2S brushed motors. No KV information (Eachine Q90 has 2S 8520 14000KV motors). They provide exponential dynamics compared to those motors that are used on standard budget quads. On the model shown, they operate with 44mm 3-bladed rotors.
The screws themselves are quite effective in this combination, but the quality of their workmanship leaves much to be desired (every fall minus the screw / the screws fly off the motor shaft). Therefore, when buying a drone, it is advisable to immediately buy a backup set of rotors, made of higher quality materials.
Since the defect in the case of collector motors tends to be frequent, future Q90C owners are advised to purchase one spare CW / CCW motor each!
Camera
The drone is equipped with a standard 1000TVL CMOS camera for this series of drones, which works only in the PAL system. The module received a good viewing angle (FOV) for FPV flights – 110 °. The lens format is F7. In general, in practice, the camera has proven itself from the best side. The disadvantages include the fact that the camera did not receive tilt adjustment, which in itself excludes faster flights. Since the potential of the quadric is, without exaggeration, good, we will attribute this to a significant drawback.
Video transmitter
The Q90C is equipped with an 8-channel 25mW VTX (Eachine Q90 has a 40-channel 200mW). The board itself is located at the top of the quadric. A closer look shows that there are no Vfreq switches on the transmitter itself. In this case, the channel change is carried out by means of a button on the control equipment. It is worth noting the quality of the FPV broadcast, for a VTX module with a power of 25mW, this is more than.
FPV Goggles Eachine VR006
Version with one antenna!
flight controller
Unlike the Q90 predecessor, which is based on the full-fledged F3 (F3 Brushed Flight Controller), Eachine Q90C received a custom version of the flight controller (Customized Version Augmentation Flight Controller), which in turn is also compatible with the Betaflight configurator, but the only thing that the pilot can change using software, this is the PID settings. That’s what it says in the user manual. Here’s what you won’t find in the manual:
Important!
By connecting the drone to a PC and running the configurator, the user will see that in addition to the PID settings, other parameters will be available for adjustment. So, any manipulations with them (with the exception of the settings – PID) will lead to the impossibility of further operation of the quadcopter (the quad turns over when it tries to take off, the motors work uncontrollably and at maximum speed). Factory reset will be possible only after installing the old version of BF 3.1.1 (detailed in the video from 26 minutes)
Food
The quad is equipped with two can (2S) lithium polymer (LiPo) batteries with a capacity of 300mAh and a discharge rate of 25C (Eachine Q90 2S 350mAh 30C LiPo). According to the specification, it provides a flight time of 6 minutes. In practice, this time was a maximum of 4 minutes 30 seconds (the flight time of Eachine Q90 is 5-6 minutes).
Control
The Eachine Q90C comes with standard equipment built on the RF module, the XN297L chip (+ signal amplification module). Operates in the frequency range from 2.400 to 2.483 GHz. The equipment is powered by 4 × AA (purchased separately). The removal distance corresponds to the declared value in the manufacturer’s specification – 120 meters. The equipment received feedback from the drone through vibrations.
The remote control will vibrate frequently if:
- Low battery level of the drone/equipment,
- When connection is lost
- Each time you press the row of bottom buttons responsible for changing flight modes (Angel/Horizon/Manual), Rudder Sensitivity (D/R), changing FPV channels or switching to game mode (CH/Game) and linking equipment with the drone (Bing) .
Flight modes
At the disposal of the user of the 3-mode flight:
-
Angel
– electronics 100% control the horizontal position of the drone, dynamism and tilt angles are minimal. Mode for beginners. When you press the “Angel” button, the equipment vibrates once.
-
Horizon
– Electronics controls the horizontal position of the drone by 50%, giving the pilot more freedom in control. The angles of inclination will become sharper, the speed will be higher. When you press the “Horizon” button, the equipment vibrates twice.
-
Manual
– electronic stabilization is disabled, tilt angles are maximum. Unleashes the full flight potential of the drone. The mode is suitable for advanced users. When you press the “Manual” button, the equipment vibrates three times.
Simulator Support
Connect your drone to PC and launch FPV flight simulator – FPV Freerider. Then calibrate the drone hardware in the simulator menu and practice without wires and the risk of crashing the quad.
Price
The Eachine Q90C quadcopter is sold through all known Internet trading platforms at a price (for the version without glasses) – $ 63; for the version with FPV goggles – $88.
Conclusion
Eachine Q90C $88
pros
- Powerful collector drone / 3-bladed 44mm rotors
- high-speed
- Good FPV camera 1000TVL / VTX work
- Acro and Rattitude flight modes
- FPV goggles VR006 (for Googles version)
- Weight (with battery) 60 grams
- Demonstrative handling and FPV ranges
- Vibration feedback between drone and equipment
- Has rotor protection
- Price
Minuses
- Drone system failure (uncontrolled operation of motors) in case of correction of any other settings except PID
- Camera angle not adjustable
- No built-in buzzer
- No Failsafe on crashes
- Poor build quality of stock rotors
- Soldering required to replace motors
- Weaker battery than predecessor
- The basis of the construction is plastic
Barring the build quality of stock rotors and the severely limited custom PC adjustment options, the Eachine Q90C quadcopter is one of the most practical FPV solutions for beginner RTF pilots. By pairing high-performance 2S commutator motors with 3-bladed main rotors, the developers have managed to significantly improve the basic flight characteristics of the drone compared to the Eachine Q90 predecessor. In control, the drone is indicatively good in all three flight modes, the potential of the motors is quite enough to cope even with moderate wind.
The distance and the quality of the FPV broadcast deserve special respect, but still, you should not get carried away flying outside the line of sight, since this drone does not have a buzzer and it is easy to lose the quad. The strength of the drone as a whole is acceptable, only its rays cause doubts. In case of serious crashes, they are unlikely to be able to maintain their integrity, it is worth considering this and choosing open, unobstructed and deserted places for dynamic FPV flights. Eachine Q90C is definitely worth the money spent and belongs to the category of long-term purchases. Age limit, the manufacturer set 14+.
Video
Flight of the Eachine Q90C quadcopter (non-stock rotors).
How to connect to FPV Freerider Simulator.