3D Robotics

3689454999?profile=originalI just got the Walkera QR Ladybird nanoquad and it's just frankly amazing. For $140, you get the quad, a 7 Channel 2.4 digital Devo 7 RC set with graphic backlit LCD display, a 240MaH LiPo and a LipPo charger. It can fly inside and out and has much better range than a Parrot AR.Drone (thanks to the proper RC gear). The RC gear alone is worth nearly that price (you can buy additional receivers for it here)!

Walkera says that it includes RC telemetry for battery and flight controller status:

1). Onboard telemetry system enables real-time monitoring of receiver, gyro, mix control and speed setting.
2). In-built telemetry function also enables and simplifies flight battery voltage monitoring.

We had a great time flying it around the living room. It's very stable, but as you would expect from a quad, very maneuverable. The transmitter starts up in regular mode (not dual rate or exponential, both of which are options), so it requires a very light touch on the sticks. A couple clicks of the trim and it will stay in one place. Because it moves fast and is so small, it's pretty easy to lose control in a small space, but the airframe seems quite robust. We crashed it lots of times, and just had to superglue on one of the motor holders after it cracked. Good as new!


Here are some shots of the incredible integration on the single flight controller board. It says it has a "six-axis gyro", but I think that must be a mis-translation from Chinese. It's probably a three-axis gyro and a three-axis accelerometer. Alternatively, it could just have a three-axis gyro, like the simple KK boards (in which case I don't know that the other three axes are supposed to be)

Top of the board, showing the flight computer and RC receiver


Bottom of the board, showing the motor controller microprocessors and four speed controller circuits.


Here's how the LiPo fits on the bottom:


A sense of the RC transmitter display


And a video in flight:

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  • Now available from Hobbyking in mode 1mode 2 (both $ 99.99) and Bind-and-Fly version ($ 69.99)

  • Moderator

    mine arrived today! Awesome!!!

  • Yes, it looks good, but really I have enough 7 channel tx's kicking around already. Ah well, I can always sell one of the others if I like the Devo.

    It looks like I'll have to wait till after the bank holiday, so I can swap it for a full version with TX, before I get to fly my ladybird.

  • Dave, no I don't have a Devo, but considering, since I've been looking at the specs.  The good thing about Walkera, is that the use the same radio across the line, so they're compatible with multiple craft.  Unfortunately, they are not following any standard, so are not compatible with other manufacturers.  At least the Devo 7 is decently priced.

  • Yes I thought I would be sacrificing the telemetry but still be able to bind for flight functions... Does anyone have any idea why Devo only, and is it hackable? 

    Ellison, do you have a Devo transmitter then? Can you bind that to a non-devo receiver? 

  • It also says that only with the "s" version of Devo transmitters is telemetry available.

  • Dave, from my reading of the manual, Devo only and it comes usually with a Devo 7.

  • yeap I need a breathalyzer on my buy now button ; )

  • Mmm it seems to me that you can only fly this with a devo transmitter - is that right? I got a bind a fly version and cant find any info on binding it to my dx6i or t7c - maybe i should have read more before hitting buy it now....

  • Thanks for the reply guys.

     I'm not sure of cost but maybe one board could also cost less than 4 separate ESCs so replacement is also easy.If say we had a failure in one motor maybe build something else with it like a tricopter or plane but hopefully it wouldn't come to that.

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