Here are the first elements of my mini-review of the new DJI phantom clone, the QW350-2 from Plastic shenzen chitwan compagny. This model of course is including GPS, compass and baro for GPS lock and RTH but also a full 5.8G FPV system. All the setup for around 360 USD…We will see if the quality have been sacrified
+ 1 x QW350-2 (with a 3S 2700mAh, 20C LiPo ending with JST connector )
+ 1 x Transmitter (using 4xAA lithium batteries included)
+ 1 x Props wrench
+ 1 x Charger for the LiPo battery
+ 1 x Charger for Lithium batteries
+ 1 X Phone holder to use your smartphone as camera
+ 8 x Spare 8045 props (4 CW, 4 CCW)
+ 1 x Instruction manual (English/Chinese)
+ 8 x Stickers (4 blue, 4 red)
Some free room is available mainly in height
2 attach system is available in the front and the rear parts. Nice initiative to attach a GoPro or the proviced smartphone clips attach
The 433Mhz antenna is located on the rear right leg
while the 5.8G antenna is located inside the battery bay
The front left attach of the landing skid welcome a 1.25mm mini-JST 5p connetor.
This one must be used to connect the PC software (see below)
Same type of LEDs as for the Phantom
Without battery, the weight is
and with the 2700 battery
A 2700maH 3S LiPo with a discharge rate of 20C… Maybe a little bit weak for it offers around approximatively 13min of flight
It’s very easy to open the top canopy part. Only 4 screws per arms. In 3 minutes, you can open it. A good point for maintenance. The general quality of the soldering job is very positive.
The GPS module is hidden behind a RF shield
Some 22 type motors, no KV mentionned probably very similar to the phantom ones
No mention about the maximum supported amperage… I will look for more information. The soldering job is very clean
A large 8 bits ATmega chip …
the L883 as compass and MEAS for barometer. This architecture is very known …. smell like APM compatible and the answer is YES !!!. It’s arducopter compatible !!!! you can connect the QW350 to the mission planner software via the FTDI cable. I made one with a mini-JST 5p.The black wire is GND, red is +5V, yellow is RX and green is TX (you will have to invert RX<->TX and TX<>RX with your FTDI device). Here is wiring diagram to build your own cable.
Notice also the presence of a BGC free port probably to control a gimbal ? I have to investigate.
Finally, there is an UART port… Maybe to connect a telemetry/Bluetooth device. Need also an investigation.
On top right of the PDP, a switch can be installed… I don’t know for which usage
A nice model of FPV camera. The color are sharp and light sensitivity relatively good.
Unfortunatly the FPV camera is fixing the ground. You will need to mode the canopy to fix it horizontaly
The bind button is located on top
5.8G FPV transmitter
Located under this black heatshrink. Assumed to be a 400mW model working in boscam band AFAIK. Notice the presence of a uFL connector.
A free port to install a 1.25mm 3P switch is available
Only two 3-way switches are available.
The left one selects flight mode:
– upper position: manual mode
– central position : altitude hold mode
– bottom position : GPS lock position mode
The right one selects emergency modes:
-upper mode : no specif action
-central position : RTH (GPS mode must be engaged too)
-bottom position : Emergency landing
2 tiny switch buttons are located behind
The “red” one is the bind button if I translated correctly from chinese. I think you have to press both this tiny TX bind button and the RX one to renew the binding procedure. To access the RX bind button, you will need to remove the top canopy part of the QW350.
The other tiny switch button is to activate Lithium. I never pressed on this one even if instruction manual says to do…. It works directly to charge the batteries
4 Lithium batteries
The RF chip. As you can see differents frequencies are avaible covering the 433Mhz and 700-800Mhz
2 free connector available on the TX PCB. Maybe a way to install to extra pot to control a gimbal ?
A 4.3″ size approximatively without any sun shade… To be honest, it’s almost impossible to see something in day-light condition.
You will need install one. The quality of the screen display is not fantastic…. but you can tune contrast, brightness via the menu.
As you can see in the unboxing video, the two upper button are used to navigate between sections of the menu. The central button is the “OK” button while the last two ones select different suboption inside a category. There is also builtin DVR welcoming a microSD card. A good point if you want to record or take photos of your FPV session. Videos in the DVR are recorded in 720×288
A RP-SMA connector is present…. a good point to install your favorite 5.8G antenna
On the left side of this RP-SMA connector, a tiny switch button cycles bethween the 9 boscam frequencies. By default, the QW350-2 is set to 5945Mhz (freq 8 in the FPV monitor)
As you can see, it’s a very sporty quadcopter out of the box with a lot of power available (especially with 9 inch props). Anyway, I don’t know if the electronics were perturbated by my GoPro clone camera of by some metallic strucre elements, I found in GPS hold and hold position modes some extra woobles, instabilities and even some deviation/shiftting/flyway in pure GPS hold mode (even afte a solid compass calibration via the mission planner software). Without the gopro cam and over grass no more drifting observed… I have to investigate this important point. Flight duration is in averarage of 13-15min.
A GPS hold and RTH demo
I decided to install my G-2D on the QW350-2
i) Use the +12V pad to install the power connector compatible with your gimbal. For me it’s a JST model
protect with electical (liquid) tape to avoid any potential shortcut
I connect the JST connector to my gimbal adapted for mobius
Here is the result
FPV CAM LENS ORIENTATION
In order to target more the horizon line. The actual camera is hold by this steepy plastic parts
The idea is to cut front part of these two plastic holder and to insert the cam in sandwitch between the canopy and these two parts. More with this mode, you can reinstall the camera as initially.
VRX Clover Antenna
VTX antenna mod
– Unclip the uFL connector
– Untape the 5.8G plannar antenna
– Clips the uFL connector of your SMA/RP-SMA coax cable
– Localize where to drill the connector hole
and drill thanks to a drimel
– Insert and screws your antenna connector
Well, the QW350-2 is for me a little nice surprize. Pretty good FPV cam with OSD, good video link range, good radio range thanks to the 433Mhz freq. Be aware, the QW350-2 is a sporty quadcopter out of the box… so default settings are not really adapted for AP. I appreciated the general quality build for a 350-400 USD quad and the fact it’s arduicopter based. I only regret than the PC-connexion cable was not provided with my box. Maybe it will be included in some future batches. After modding the FPV camera orientation and adding a gimbal power port, the QW350-2 is even more interesting IMHO.
+ Power full quadcopter
+ Compatible up to 9 inch props
+ Very well built (clean assembling)
+ Good packaging
+ Nice radio working @433Mhz
+ Powerful Lithium batteries for the radio & FPV monitor
+ DVR included in the FPV monitor
+ Powerful VTX (400mW)
+ uFL antennas connectors (for both the 433Mhz and 5.8G parts)
+ Good FPV camera (good light sensitivity, approx 110-120 degreees of FOV)
+ OSD information via minimOSD
+ Easy mantenance
– No FTDI cable to connect to the “Mission Planner” software (important to calibrate accelero and compass)
– Too sporty flight caracteristics out of the box
– No VTX frequency’s DIP switch on the quadcopter (but can be installed, 1.25mm pitch)
– FPV camera orientation (fixing the ground)
– Default PIDs values (some unstabilities/woobles especially in altitude hold/GPS modes)
– GPS sensitive to RF interferences (HD cam ?, metallic structures ?)
– No advanced instruction manual in the box
– DVR included in the FPV monitor buggy (can’t correctly stop file’s recording)
– FPV monitor menu navigation and stop recording keys combinaison
– No pot switches to control gimbal (but maybe it’s possible to add some)
This quadcopter have been courtesy provided by Gearbest in order to make a fair and not biased review. I would like to thanks them for this attitude.
You can find it actually for 357 USD at QW350-2