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    HGLRC Sector 132 4K is a pretty new design concept in its ability to used as a 3" micro and a 2.5" 'proptected' cinewhoop while able to record 4K with the Caddx Tarsier 4K dual camera. Its a compelling quadcopter due to its affordable price and the ability to be flown inside and outside.

    The quadcopter comes as a BNF (bind to fly) or PNP (plug and play). The BNF version offers two different types of receiver, FrSky R-XSR, and FrSky XM+. PNP version comes without a receiver and that means that you will have to buy a separate receiver and put it in by yourself.

    At the date of writing this review, HGLRC Sector 132 4K comes with a price of around 160 USD with free worldwide shipping for the PNP version and around 175 USD for the version that comes with the FrSky XM+ receiver. 

    If we went ahead and bought all the parts separately, the price would come to around 260 USD without a receiver so you are saving yourself around 85 USD and 2-3 hours that would take you to build it completely.


    1x F4 Zeus AIO Flight Controller
    1x FD VTX Micro
    4x FD1106 3800KV Brushless Motor
    1x Sector132 Freestyle Frame Kit
    1x CADDX Tarsier 4K
    6x Gemfan 2540 propeller
    6x Gemfan 3035 propeller
    1x Hammer Antenna
    1x Receiver(BNF version)


    The quadcopter was well protected in its box, it came with extra screws for mounting the prop guards, TPU GoPro mount, 6x Gemfan 2540 propeller and 6x Gemfan 3035 propeller.

    The CADDX Tarsier 4K camera stick out, but when the prop guards are on its well protected. The receiver antennas are protected and held by plastic tubes, which could be a failure point but had no problems with it soo far.

    The frame features a unibody design, it bends a bit but feels nice and has chamfered edges.

    All the wiring is well done with nice solder joints, everything fits well due to the AIO Zeus board.

    The whole build uses M2 screws, and you get a bunch of spares included in the box. The frame is missing one row of standoffs to fit the VTX which is not a deal breaker but it flexes and it could potentially be a breaking point.

    The unibody bottom plate with arms is 3mm thick while the top plate is 2mm. If you break an arm you have to replace the whole frame but thats a given on 3" frames.





    HGLRC Sector132



    Weight (Dry)


    Weight (AUW)


    Optional RX

    FrSky XM+

    Flysky A8s V2

    Crossfire Nano


    FD Micro 400mW Smart Audio


    Caddx Tarsier 4K


    HGLRC F4 Zeus AIO 15A


    FD1106 3800KV

    Battery Connector



    Since this is a transformer drone with different weights and flight styles to get the most out of it you should be using two different batteries dependent on the application.

    For flights with prop guards and inside you should use a 3S battery for better throttle control. HGLRC recommends a 3S around 550mAh with average flight times of 3-5 minutes.

    For flights without prop guards and 3" propellers you could use a 3S but if you are outside a lighter 4S would make this little 3" scream. HGLRC recommends a 4S 450mAh, you could use a bigger pack but at cost to performance. Flight time on this setup is 3 minutes average so make sure you grab a couple of them since it is really fun to fly.

    We used Tattu r-line packs for our testing and were getting good results, you could use any brand just make sure the packs are with a XT30 plug.


    The Sector 132 comes with HGLRC electronics, HGLRC F4 Zeus 15A 4in1 ESC Flight Controller is an AIO board with FC, PDB and ESC built in. Thanks to it being AIO the whole stack fits in nicely since the camera stack fills up most of the space in the frame.

    The flight controller is an F4 board that comes with Betaflight 4.0.4 flashed. It has OSD, 4 Uarts, 8MB of BlackBox memory, 2 custom PID profiles for 2.5" props with prop guards and a tune for 3" props without prop guards.

    The tune is OK, it is a base tune without bidirectional DShot since the ESC is BlHeli_S, you could flash JazzMaverick BlHeli_S SiLabs on it but it flies pretty good without it. The ESCs are 15A which is plenty for a 3". The board comes with a low-esr capacitor preinstalled which will eliminate any noise issues you might run into without it. It is always recommended to use a capacitor with AIO boards.

    The HGLRC FD VTX Micro has a 20x20 board with a IPEX connector, the quadcopter comes with an antenna. The VTX goes up to 400mW and has smart audio for changing the setting in the Betaflight OSD menu. HGLRC VTXs are well known to be reliable and put out the advertised power. 

    The 5.8Ghz antenna is mounted on a TPU 3D printed part with the receiver antenna inside the plastic tubes, on the bottom there is an option to mount it horizontally and mounting options for a 900Mhz receiver antenna like for TBS Crossfire.


    This is what makes this quadcopter soo interesting and worth buying. For such a low price you are getting a Caddx Tarsier camera that can record up to 4K HD video, this is really important on 3" setups since they are too small to carry a GoPro, this is the best way to capture video with a small quadcopter.

    Plus the FPV feed is on par with the best cameras out there, very similar to the Caddx Ratel. To change the FPV camera settings use the standard camera joystick, the connector is cut off for some reason and if you don't have a spare connector you are going to have a bad time changing any FPV settings, luckily the settings are very good out of the box..

    To change the setting on the camera you will need to use the app and connect to the camera with your phone. The quadcopter has to be powered on of-course. Use the app to check the picture and expose properly.   


    Frame Rate

    4K 16:9

    30 fps

    2.7k 4:3

    60 fps

    1440p 4:3

    60 fps, 30 fps

    1080p 16:9

    90 fps, 60 fps, 30 fps,

    720p 16:9

    120 fps


    The HGLRC FD1106 3800KV Brushless Motors are a bit small for a 3" since most of the 3" builds feature a 14xx motor, this was quite a surprise because they performed really well. This is due to a lower pitch and light propeller. We tried Gemfan Windancer 3028 3-blade Propellers which resulted in hot motors and a lot of propwash. There is a reason they chose such light props.

    When installing the prop guards use the longer screws included in the box, when switching back and removing the guards use the old screws, these will damage your motor since they are too long and will dig into the winding.


    The HGLRC Sector 132 4K has something unique about it, being a BNF getting this kind of customisability and versatility out of the box is unusual. The biggest advantage with a BNF like this being able to convert from a 3" freestyle micro to a safe indoor cinewhoop just by adding the propguards makes it feel like you are getting two quadcopters compared how different these configurations fly.

    This little guy can even carry a small HD camera like a GoPro Hero 5 Session, not that it is recommended considering how small the motors are plus you already have a 4K camera included. Non the less HGLRC provides you with a GoPro mount expanding the possibilities even more. 

    When in cinewhoop mode the quad does feel a bit underpowered paired with a 3S battery for outdoors flying, but this configuration flies really well indoors. While flying straight the hover throttle position is just below the centre of the stick leaving no room for punches but thats what we come to expect from cinewhoops that are meant for taking smooth and stable footage, the lack of stabilisation could be a deal breaker for some but considering what this quadcopter is this is completely acceptable.

    When in 3" freestyle mode the quadcopter feels just like any other 3" micro. Its small, light, fast and hella fun to fly in spots you wouldn't bring your 5". Quadcopters like this are great for flying on playgrounds and backyards. When in freestyle mode you will need to use a 4S battery, you might want to put a 1300mAh which you could, but to get the best performance HGLRC advises a much smaller battery 450mAh - 850mAh.

    Keep in mind the lighter it is the better its going to perform in smaller places, but if you want to throw it around like a 5" use a heavier pack.

    When installing the prop guards use the longer screws included in the box, when switching back and removing the guards use the old screws, these will damage your motor since they are too long and will dig into the winding.


    HGLRC did something different with this design, which is always welcome in the FPV hobby. You do get one quadcopter but it can be used in two very different ways giving you the flexibility to fly it indoors as well as outdoors while not sacrificing performance.

    HGLRC did something really beautiful with the options it provides you with out of the box letting you really choose how you want to fly this quadcopter. It is one of the cheapest 4K 3" micros on the market making it a clear banger!

    The closest thing to a quadcopter like this is the GepRC CineQueen 4K 3inch Hybrid CineWhoop which is 270$. The CineQueen has better specs in terms of bigger motors and a better ESC but since it is still BlHeli_S that doesn't make much difference. It also features a 3" prop guard and the HGLRC fits 2.5" props in its prop guards. 

    For the low price HGLRC is a great option compared to anything on the market, take into consideration that you get a 4K video recording capable quadcopter for 170$ that flies amazing on 4S and 3" props! You really cant go wrong with it, it is a ton of fun with and without prop guards. 

    By Timon 

    Review: HGLRC Zeus35 AIO Board

    Review: HGLRC Zeus35 AIO Board

    HGRLC Zeus35 is the updated version of the famous Zeus All-in-One F4 board. Lets take a look at what has been changed or added to this board and why is this board so interesting.


    F411 FC+35A BLS ESC
    Input Voltage: 3-6S
    FC Firmware: BF HGLRCF411(HGLR)
    ESC Firmware: BLHeli_S
    Installing Hole: 20x20mm/M3 or M2
    Dimensioms: 40x32mm
    Weight: 9.8g

    F411 Flight Control
    CPU: STM32F411
    MPU: MPU6000
    OSD: Support
    BEC: 5V/2A
    BlackBox: 16M
    UARTS: 2

    35A 4in1 BLHeli_S ESC
    Current Sensor: Support
    Constant Current: 35A
    Peak Current: 40A (10s)

    Package Included:
    1x Zeus35

    Recommended Parts:
    Motor: 1408/1407/1306/1106
    Propeller: 2-5 Inch

    Zeus35 AIO FC package contains the FC board, rubber grommets, XT60 connector with 14AWG silicon wires and optional 18AWG pigtail with XT30 connector. There are also two low ESR capacitors included – one 1000uF and one 220uF. Both are rated for 35V (6S).

    The weight of the Zeus35 is only 9.8 grams. Thats pretty lightweight in comparison with other similar AIO boards (Sunrise Cicada AIO 30A ESC & F4 FC – 22 grams, Airbot Nox AIO 35A ESC & F4 FC – 22 grams)

    Evolution of the Zeus

    HGLRC Zeus35 became larger (40x32mm) than its predecessor Zeus 15A (35x32mm). Zeus35 weight also increased from 6.5 to 9.8 grams. All this is due to the twice as more FET driver chips and increased board size to accomodate these FET’s. Zeus 15A had 12 FETs and Zeus35 has 24 FET drivers. Thats how it handles the 35A currents.

    On the one side of the board there are solder pads for UART2 and SBUS that are reserved for receiver. There are also Buzzer and LED control pads as well as S5 signal pad.

    On the other side of the board you can find the solder pads for VTX and FPV Camera. TX1 pad is reserved for VTX SmartAudio/IRC Tramp control (or can be used for GPS and any other device. See the Softserial configuration below) . 

    USB socket is secured with epoxy – it will not come off by plugging and unplugging the USB cable.

    The heart of the ESC is Silabs BB21 MCU and Toshiba TPN2R203 FETs rated @45A, so the specs of the ESC are right.

    Zeus35 has current sensor, the one that was lacking the previous version of Zeus FC.

    The mounting holes are M3 diameter and can be downsized to M2 by adding the included rubber grommets.

    HGLRC Zeus35 basic connection diagram:

    Receiver connects to the UART2, VTX SmartAudio control to the UART1

    Alternative HGLRC Zeus35 connection diagram if you want to connect Receiver, GPS and VTX SmartAudio

    GPS is connected to the UART1, Receiver to the UART2 and the VTX SmartAudio to the SoftSerialUART3.

    In order to set up the Softserial you need to enable the Softserial option in the Configuration tab in Betaflight Configurator:

    Then remap the resources by entering these commands in the Betaflight Configurator CLI:

    resource MOTOR 5 none

    resource serial_tx 11 B03

    Don’t forget to save the configuration by entering save command!

    After this you can see additional UART port as SoftSerial1. Now you can set this port for VTX SmartAudio control.

    Available @ 



    • Low profile installation
    • Lightweight FC+ESC combo
    • Supports 3-6S 
    • Blackbox flash
    • Current sensor


    • Only 2 UARTs are available (but can add softserial port)
    • Will not fit some of the frames due to the size



    HGLRC Zeus35 is highly integrated, ligtweight AIO FC+ESC board. It weights only 9.8 grams and it is the lightest AIO ESC and FC board for 20x20mm mount pattern.  However due its bigger size 40x32mm than its predecessor and can probably will not fit into all the 20x20mm mount size frames. 

    Zeus35 ESC provides 35A (45A burst) current and supports 3-6S battery input. This makes it competitive board for any light 5″ quadcopter. While it probably will not  fit the heavy racing setups, but will work on the quadcopters ranging from 3″ to 5″.

    Zeus35 has the same size 16Mb BlackBox flash chip as its predecessor, but has current sensor added to the board. 

    There is only 2 UART ports available on the HGLRC Zeus35 FC. First one is reserved for receiver and the second one is for the VTX control. This leaves with no UARTs for GPS or DJI Digital FPV system. However you can resource the S5 pad as Softserial port and use it for VTX SmartAudio freeing one additional UART port for GPS or DJI Digital FPV system.

    I wish the HGLRC would add solder pads for additional UART in the future iterations of the Zeus flight controlers.

    Review: HGLRC FD435-VTX Stack

    Review: HGLRC FD435-VTX Stack

    HGLRC is well known manufacturer of the RC components. It has one of the widest selection of flight and speed controllers. In this review we will look closer at one of their products – HGLRC FD435-VTX



    HGLRC FD F4 Mini Flight Control
    CPU: STM32F405R6T6
    MPU: MPU6000-SPI
    Input Voltage: 2-6S Lipo 
    Built-in Betaflight OSD to adjust PID
    BEC Output: 5V@3A
    Size: 25.0×25.0mm
    Installing Hole: 20X20mm,M2
    Weight: 4.2g

    HGLRC FD 35A 4in1 BL32 3-6S ESC
    Input Voltage: 3-6S Lipo
    Constant Current: 35A
    Peak Current: 40A(10s)
    BEC Ouput: NO
    Size: 36x36mm
    Installing Hole: 20x20mm,M2
    Support Damped Mode:
    Weight: 6.5g

    Output Power: PIT/25mW/100mW/200mW/350mW Switchable
    Control Mode: BFOSD Control/Button
    BAT: 7-26V (3-6S)
    BEC: 5V 1A
    Video System: NTSC/PAL
    Antenna: MMCX
    Size: 24*27mm
    Installing Hole: 20x20mm,M2
    Weight: 2.7g

    HGLRC FD435-VTX is full stack with Flight Controller, 4in1 ESC and VTX. 

    Package contents: FC, 4in1 ESC, VTX, screws, silicone rubber spacers, cable set, low ESR capacitor, XT30 pigtail, MMCX linear antenna and MMCX to SMA (RP-SMA) pigtail.

    Closer view of the HGLRC Forward FD435-VTX stack boards.

    HGLRC Forward F4 flight controller has F405 MCU, MPU6000 gyro, connected via SPI interface. Is capable of accepting 2-6S battery input.

    The weight of the HGLRC Forward F4 FC is 4.2 grams.

    HGLRC Forward F35A 4in1 ESC is capable of 35A  (40A burst) output while accepting 3-6S Lipo input. It has current sensor, but has no BEC on board. Forward F35A runs on BLHeli_32 firmware and is capable of sending the ESC telemetry back to the FC, enabling the RPM filtering

    The weight of Forward F35A is 6.5 grams.

    HGLRC Forward VTX Mini has 4 power levels 25/100/200/350mW and has Pit mode with 0mW output. Channel, band and power level setting is controled via Betaflight OSD or push button. VTX Mini has microphone on board and is capable of transmitting the sound along the video feed.

    VTX Mini weights 2.6 grams without antenna.

    Total stack weight is 17.4 grams without wires.

    And total weight of the stack with wires and 2mm metal screws is 18.9 grams.

    Forward FD 35A ESC has arc curved solder pads that are convenient for soldering the ESC wires vertically.

    You can see the 6 layers of the copper by looking at the side of the motor solder pads.


    Setting up the HGLRC FD435-VTX 

    Port definitions:

    UART1 is for receiver telemetry (S.port) or uninverted receiver input (iBUS)
    UART2 is for VTX Betaflight control
    UART3 is for GPS or other peripherals
    UART4 is for ESC telemetry 
    UART6 is for inverted serial receiver input (SBUS)

    HGLRC FD435-VTX connection diagram:

    HGLRC FD435-VTX stack user manual:

    HGLRC FD435-VTX flight controller comes with the Betaflight version: 4.1.1 . So there is no need to update at the moment of writing this article, but if you will need to upgrade firmware target is OMNIBUSF4V6 or OMNIBUSF4V6 (AIRB) if using BF higher than 4.0. 


    HGLRC FD 35A 4in1 ESC runs on the BLHeli_32 firmware. ESCs have BLHeli_32 telemetry and should be enabled in ESC_SENSOR setting. You should also check if the number of the motor poles (magnets) is set correctly:

    Also ESC telemetry input should be enabled in the Betaflight Configurator Ports tab under UART4:

    If you want to update the BLHeli_32 firmware to the latest, you will need the BLHeliSuite32. You can find BLHeliSuite32 here:

    Open BLHeliSuite32, press [Read Setup] then [Flash BLHeli] and select the newest BLHeli_32 firmware.

    After flashing is complete you should see the information of all the 4 ESC with the new version.

    Battery voltage and current sensor divider settings:


    Conclusion, final thoughts

    HGLRC Forward F4 flight controller is connected to the Forward F35A ESC via cable connector, so no soldering is needed, however you need to solder the connecting wires if you wan to connect the Forward VTX-Mini to the stack. I would like if the wires were presoldered already from the factory. 

    FD435-VTX stack has 4in1 ESC, running BLHeli_32 firmware and this allows to use the RPM filtering for smooth flying. Only a few 20x20mm sized stacks have ESCs with BLHeli_32 firmware. This adds more value to this stack. 

    HGLRC FD435-VTX is a complete stack perfectly suitable for smaller 3-4 inch quads (because of the smaller 20x20mm boards size) but also can be used in the lighter 5 inch quad builds. 

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