TEST: JJRC JJPRO P175, the super-X RTF brushless FPV racer

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INTRODUCTION

After the popular JJRC X1, the first JJRC’s brushless racer, JJRC introduces a new line serie so-called “JJpro”. Two models are already introduced, the P175 and the P200 respectively two 175mm and 200mm X-brushless quadcopters. Here with the JJRC JJPRO P175 you can have a full RTF machine, 4S capble, full 3K carbon structure and naze32 compatible board. Please check also for more information the great thread: [url]http://www.rcgroups.com/forums/showthread.php?t=2702984[/url]

BOX CONTENT

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+ 1 x JJRC P175 (with a 3S 1300mAh LiPo with XT60 connector)
+ 1 x Transmitter (using 4xAA batteries not included)
+ 1 x Gopro camera mount
+ 1 x 5.8G Cloverleaf antenna
+ 1 x Velcro band
+ 1 x Bind plug
+ 4 x Zip-ties
+ 1 x Charger
+ 4 x Spare props (2 CW, 2 CCW)
+ 1 x Instruction manual (English)

OVERVIEW

Here no more a toy from JJRC, no more hybrid plastic canopy with proprietary FC and 4-in-1 board. With the JJPro line, everything is open-source based: a compatible naze32 board, BHheli-4S compatible 20A indivisdual ESC, efficient 800TVL CMOS FPV cam and a power 48CH VTX. Far away from their first models…. JJRC is also flirtling with the revival interest for X-design… after 4 years of total H-structure domination from the first blackhawk.

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-FRONT VIEW
Clearly an X structure with strong and large 3K carbons arms on the lower level. Aluminum standoff (5cm) and a second 3K carbon plate where a gopro camera mount can be installed.

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-SIDE VIEW

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Arms are really strong, 3mm of thickness with real 3K carbon structure

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while the upper plate is “only” 2mm

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Seems a super solid structure, that’s a good point.

The camera minimum tilt pitch angle is blocked by the receiver location. Actually the minimul angle is around 40 degrees so not adapted for beginners

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By gently shifting the receiver rear, you can decrease a bit this angle to around 25 degrees.

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The right side welcomes the microUSB of the skyline32 board, 100% compatible with the naze32. Good news, last Cleanflight 1.13 firmware is already flashed on the FC board.

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-REAR VIEW
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The FlySky receiver connected in PPM mode is well jailed inside the structure. The receiver is installed on velcro band and also secured with a zip-tie

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-UPPER VIEW
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-BOTTOM VIEW
You real need to fasten well the battery strap if you don’t want to loose midflight the battery. In any case, the battery seats on 4 metallic nuts… It’s not an ideal situation. A anti-slip pad should be added like some walkera runner 250 models.

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3 LEDs programmable via the LEd strip panel in CF/BF 🙂 There are not programmed out of the box…

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-WEIGHT
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More than 450g for a 175mm…. it’s a little bit heavy IMHO.

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Motors

4″ props are offered in the bundle, some 4045 to be more precise

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Unfortunatly, 5″ model can’t be installed on the P175 (only for the P200)

Props must be blocked with these nylstop M5 nuts, pretty hard to fasten

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You really need to fasten well.

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2205 motors are installed, a dimension a little bit different from the classic 2204. Probably the addition of a heatsink on top increase the total height size. They are announced to spin @2600KV and 4S compatible as well

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M5 thread for the shaft

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LiPo

A 1300mAh 3S LiPo announced to have 30C for discharge rate capacity.

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Video transmitter

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Be aware, when turned on the right the VTX delivers only around 11mw

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When turned on the left, full power is here

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SMA connector

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Inside the tiny hole to the right of the SMA connector, a white button selecting the Vfreq (short poress) and one of the 6 bands (long press). The “raceband” is supported

Camera module

A 800TVL CMOS camera with very good performances in term of light transitions behaviour.

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ESC

Some Emax lighting 20A directly flashed with BLheli 14.2 supporting oneshot 125 but this option is turned off by default in CLF.

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Be aware, if you want to flash newer BLheli firmware, to not flash the proposed firwmare (nano-serie) and to download first the correct hex file at: http://www.emaxmodel.com/blog/AmandaChen/ (see video)

Two ESC’s wires are very close to a nut/bolt combo. Potential shorts are here

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Transmitter

A very simple basic none-programmable radio, a flysky model supporting the AHFDS-2A protocol (recently deviated by goebish btw). Only two 3-way switches. No LCD…. No possibility to set the D/R, to set a throttle hold or to play with expo…. :(. As said previously, if you ahve any i6,i6s radio, (or a Devo with the A7105 RFchip + last goebish build) you will be able to bind this quadcopter with.

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FIRST USAGE

After some little tuning in CF (increasing rates to 0.5, turning on oneshot125 and configuring LED strip), I can say the P175 is almost ready to fly out of the box (you can fly it directly w/o without these little optimizations). Don’t forget also to turn on maximum VTX power to enjoy full FPV range.

WIth the default multiwii rewrite settings:

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This machine flies beautifully in 3S without gopro installed. With the camera installed, it’s another story and you loose a lot of agility. Some 5″ props would have been a good workaround …. but can’t be installed. At least a 4S can if you are planning to lift a HDcam. What to say except that I really like this machine … Great FPV range, very good FPV cam handling well light transitions and it’s fast !!!!!!
As you can see, the frame is super crash resistant. I falled for example from 15m high … just a small scratch on the antenna and got a direct contact with a tree too 🙂 no damaged at all.

CONCLUSIONS

The P175 was close to obtain a SeByDocKy’s award …. I would give it if a builtin OSD was here … Except that, I liked everything with machine: No need to spend 2h to tune everything: last CF version installed, strong 3K carbon X-design, strong FPV ring. It’s fast and fun !!! Nothing to add.. The machine targets intermediates to Advanced pilots…

UNBOXING & CONFIGURATION

PROS

+ Great machine
+ Almost perfectly configured
+ Solid structure
+ 4S compatible
+ BLheli strong 20A ESC
+ Oneshot 125 supported
+ Good FPV cam
+ Good FPV range
+ Builtin buzzer
+ Failsafe set correctly

CONS

– No OSD
– Camera minimum uptilt orientation blocked by receiver
– Battery sliding on nuts
– Basic flysky radio with only 2 switches
– Not 5″ compatible

RCgroups thread: http://www.rcgroups.com/forums/showthread.php?t=2716522

This quadcopter have been courtesy provided by Banggood in order to make a fair and not biased review. I would like to thank them for this attitude.
You can find it actually for 236USD at http://www.banggood.com/JJRC-JJPRO-P175-Skyline32-5_8G-48CH-Raceband-600mW-800TVL-Coms-FPV-Racer-ARFRTF-p-1065997.html

8 Comments

  • fabien says:

    Hi
    i received my P175.
    when i connect with cleanflight (version 1.2.4), i have no button “back-up” to save configuration ?
    I have gyro and accelero (green) but not magneto ?
    An idea ?
    Thanks
    Fabien

    • SeByDocKy says:

      Yes it’s normal since 1.2.4 they removed the save and load config. The best way is to dump all settings via the CLI. go in CLI and type “dump”
      As far I know there is no magneto for the P175. It’s a racer, a baro/magneto are completly useless …

      • fabien says:

        Thanks
        it’s what i have done for saving .
        what a strange idea to remove this back-up !!!
        i was surprise for the magneto because it’s activated in your vidéo…
        After 2 flights, my P175 is very unstable.
        I set up all PIDs like yours in the vidéo, except i didn’t update the BLhéli.
        Is it really necessary to update them ?
        They are in 14.2 version.
        Thanks

        • SeByDocKy says:

          Are you sure yo fly in angle mode first ? Did you perform gyro/Accelero calibration ? No really necessary to upgrade ESC firmware.

  • fabien says:

    Hi SeByDocky
    One of the ESC (emax ligthning 20A) is dead.
    Do you think i can replace it by a RACERSTAR or an other brand ?
    I suppose obviously i replace the 4 ESC.
    can i choose 30A (i think i’m not sur) ?
    If not, what compatibility must i respect to make it work correctly ?
    Thanks
    Fabien

  • fabien says:

    Hi
    thanks for link
    Banggood is a good shop but delivery time is very long and not always sure.
    i would prefer to order in french shop
    and enjoy to change 4 ESC by some 30A (as recommanded for 2205 motors)
    But i don’t know if all brands are compatibles from where my previous questions
    Racerstar seems to be a good brand, equiped lot of quad, and you can find in lot of shops, but will my P175 work with them ?
    Of course, if i have no choice, i will buy them from banggood
    Thanks
    Fabien (french)

    • SeByDocKy says:

      Ok… In this case, take some BLhel_S/Dshot 600 to enjoy last ESC functionalities… I guess with 30A, no problem tu support 4S.

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