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Eachine Tiny QX90 Review: Dimensions

A little about Eachine’s story first…

Eachine have been rather revolutionary for the quadcopter drone market. They first made quadcopters accessible to almost anyone with the Eachine H8 Mini — which at its time was an insanely cheap quadcopter — and then went on to revolutionise the FPV hobby with some really affordable quads. Come second half of 2016, Eachine came out with the Eachine Tiny QX90.

Yes, this is the same quad that’s sold by a number of shops under a number of different names. However, what differentiates Eachine from other brands is that they really seem to understand the market very well and thus, make changes to their quads accordingly.

Eachine Tiny QX90

In this case, Eachine were quick to realise that a huge section of the quadcopter market flew their quads with the Flysky FS-i6. Other tune-able brushed quads came with support for expensive radios such as the Taranis, etc. Eachine made the Tiny QX90 compatible with the FS-i6 using a tiny little receiver that exposed the brand to a huge market in return.

I happen to be a staunch fan of the Flysky FS-i6 transmitter. It is cheap, supports PPM, 20 model memory… what else can you ask for?!

Eachine Tiny QX90 Review

Specifications

  • Wheelbase: 90mm
  • Weight: 39g (without battery); 54g with stock 600mAh battery
  • Dimensions: 118 x 118 x 70mm
  • Flight controller: SP RACING F3_EVO_Brush
  • Firmware version: Cleanflight 1.13.0
  • Motors: 8520 Brush Motor
  • Prop Size: 55mm
  • Receiver: 3 variants – Frsky/Flysky receiver (FS-i6)/DSM2 receiver
  • Camera: 520TVL HD CMOS 1/4 inch Camera
  • VTX: 5.8GHz 25mW 32-ch
  • Battery: 3.7V 600mah LiPo battery

At the time of writing, the Tiny QX90 is available for $68.99 from Banggood (Flysky receiver).

Eachine Tiny QX90 Impressions

Eachine Tiny QX90 Review: Packaging

Coming back to the Eachine Tiny QX90, I took receipt of the shipment a few days back. It would be an understatement if I said I had to spend some time setting it up. For one, the propellers that ship with the Tiny QX90 are absolute crap, and I couldn’t get a 10 second flight out of the quad for like one whole day.

Eachine Tiny QX90 Review: Top
Eachine Tiny QX90 with UDI U27 props

After switching to other props (those from the UDi U27) and playing around a little with the PIDs, I could finally get the Tiny QX90 in the air… and then, getting it down was a problem (because it’s so much fun to fly).

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The Tiny X90 (BNF version; pre-assembled) comes in a foam-packed retail box that I absolutely love, because it allows me to carry around the QX90 without having to invest in another carrying case. It’s actually a very smart thing to do, because it ensures no damage is caused to the item during shipment.

Besides the quadcopter, you get a user manual (that actually works), a couple of extra motors, two 600mAh (generic, no brand) LiPos, one set of extra props, and a LiPo charging cable that can charge 2 1S LiPos from a 2S balance charger. It’s worth noting that the QX90 comes with a 25mW 520TVL camera in the box.

Eachine Tiny QX90 Review: FPV camera switches 2
Flysky micro receiver sandwiched between the FC and top carbon plate

The micro receiver that comes in the box is extremely small, and range that I’ve managed to get isn’t quite amazing. I expected to get a strong range indoors, which sadly doesn’t happen. If you want to simply do indoor FPV, something like an XK X100 + FX797T will be a better option. On the other hand, if you don’t mind going outdoors (which you really shouldn’t) the QX90 is an amazing pick.

How to bind Eachine Tiny QX90 to Flysky FS-i6

To bind the Eachine Tiny QX90 to your Flysky FS-i6, perform the following steps:

  • Turn off AFHDS 2A on your FS-i6 by going into Menu -> Rx Settings
  • Turn off transmitter
  • Short the ‘Bind’ and ‘Ground’ pins on the micro receiver
  • Turn on your Flysky FS-i6 while holding the ‘Bind’ button
  • Your FS-i6 should now be bound to the Eachine Tiny QX90!

Eachine Tiny QX90 how to bind to Flysky FS-i6

You can expect a range of something between 60-100m outdoors, which in my opinion is quite satisfactory. For FPV, I use the KDS Kylin FPV headset which is fast becoming my favourite. Irony is that the 25mW 5.8GHz VTX has a greater range than the 2.4GHz radio receiver. I’m truly hoping to see some more powerful micro receivers (Flysky already have one) in the next few weeks.

The carbon fiber frame of the Tiny QX90 seems really sturdy. I don’t see it coming apart anytime soon, especially given that it only runs brushed motors. Also, there are no ‘teeth’ or parts that poke out unlike the Tiny QX80, so I expect the frame to live a long life.

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What you’ll absolutely love about the Tiny QX90 is that it comes with a couple of 600mAh batteries as mentioned earlier. There’s no discharge rate mentioned on them, but they do the job really well. The best thing about them is that they really give the Tiny QX90 the advertised flight time of 5-6 minutes! This is quite a huge number, especially if you’re coming from something like a Tiny Whoop (or Chiny Whoop, for that matter).

The FPV camera isn’t the best (frankly, I prefer the FX798T over this) but doable. The camera makes things look a bit too saturated… a bit like how it used to work with Samsung Super AMOLED phones back in the day. That said, it’s absolutely fine in daylight, it’s only when surroundings turn dark that the camera starts showing signs of weariness.

Eachine Tiny QX90 PIDs

Here are the PIDs for the Tiny QX90 quadcopter:

Name Proportional Integral Derivative
ROLL 80 30 44
PITCH 80 30 44
YAW 185 45

Here’s a screenshot from the CleanFlight configurator app:

Eachine Tiny QX90 PIDs

Photos

Eachine Tiny QX90 Review: VS JJRC H36
Eachine Tiny QX90 vs the JJRC H36

Flight Demo

Eachine Tiny QX90 Summary

Eachine Tiny QX90 Review: Dimensions

Pros and Cons

There are a few things that I’d like to see on perhaps a revision of the Tiny QX90, such as:

  • Better propellers
  • Failsafe-enabled receiver (Flysky)
  • Better range
  • Obscure motor wiring

What you’ll appreciate on the Tiny QX90:

  • Flight time
  • Built
  • Flysky compatibility
  • CF frame

I’m overall very impressed with what Eachine have done to the Tiny QX90. Flysky compatibility is a boon, and Eachine should really be patted on the back for that.

Who I think should get themselves a Tiny QX90? People looking to get into FPV, and FPV pilots looking to keep themselves busy while their LiPos charge. On the other hand, if you’re looking for something ready to fly out of the box, consider the MJX X909T and the Hubsan H111D.

Get the Tiny QX90 from Banggood.

Next up I’ll be posting a review of the Tiny QX80, which is another one from the brushed series of micro FPV quadcopters. See you then!

  • alfonso

    PIDS?

    • Please hit refresh, they’re right there.

  • FotoAmg AmgFoto

    my loop time is 1000 by default should I use that or set to 2000 with 500hz refresh?