Eachine TX805 5.8GHz video transmitter with SmartAudio review

I love Team BlackSheep Unify Pro series of video transmitters. But they are bloody expensive. $50 for an HV version is way too much in my opinion. Still, I own several of those. Whey on Banggood I've found a presale of Eachine TX805 VTX with SmartAudio for $16, I could not resist and I've ordered a couple of them. This is what came out of it:

FrSky R9M and R9 Slim long range radio system review

When FrSky R9M long range transmitter and FrSky R9 receiver series started to pop up some time ago, there was a lot of speculations "it is any good?" "is it a Team Black Sheep Crossfire killer" "cheap Crossfire alternative?". In time, new firmware started to appear, new receivers and so on. And oh yes, EU LBT version finally also appeared. And what… FrSky even was giving R9M for free with X10S Horus.

ZOHD Nano Talon V-tail airplane review

Let's cut to the chase: my final review of ZOHD Nano Talon is: this airplane is crap. Just like that. Period. It might be good looking, it might be spacious inside and quite well thought through but it lacks one thing: it does not want to fly well. As simple as that.

As long as air is calm and there is no wind it's kind of OK. You can even have some fun with it. Yaw still sucks, a roll is strange but it's OK. But as soon as wind appears and Nano Talon has to fly through the disturbed air, it is over. This thing just does not wants to fly straight. Always tipped to one side, unresponsible and wobbly. Nope nope nope…

Blow-o-meter review: Uni-T UT363BT anemometer from Banggood

Uni-T UT363BT mini anemometer

No idea how accurate it is, but surely results are plausible. Bluetooth with iENV Android application also works, but instructions how to set it up were not clear. The secret is that you do not have to bind UT363BT with a phone. Just open the iENV app, enable Bluetooth in UT363BT and connect. No pairing required!

Realacc UXII circular polarized 5.8GHz FPV antenna – Lumenier AXII chinesium clone

Cloners gonna clone and chinesium keeps being chinesium! It did not take long for Banggood / Realacc to clone Lumenier AXII FPV antennas and call them Realacc UXII circular polarized FPV antenna. Coincidence? I do not think so.

Realacc UXII circular polarized 5.8GHz FPV antenna

I've ordered few of those in December, they arrived last week and this is what came in package

Realacc UXII circular polarized 5.8GHz FPV antenna

Realacc UXII circular polarized 5.8GHz FPV antenna

Unfortunately, in this case, the build quality was typical chinesium. As soon as I opened one of them, antenna disintegrated… oh bugger…

Realacc UXII circular polarized 5.8GHz FPV antenna

I only hope the other (the one I did not open) works like expected. I did not test them in real life conditions since the weather is rather bad over here. This weekend maybe… In a meantime, here is a video of what is happening inside Realacc UXII 5.8GHz antenna.

Hands on: Matek 5.8GHz 40CH VTX-HV in an interesting form factor

Is it only me, or is Matek starting to build very good FPV hardware? I think everybody knows Matek's PDB. Matek F405 flight controller series is also very popular. But do you know Matek also started to build VTXes? I didn't and when a friend showed me this:

Matek VTX-HV 5.8GHz 40CH 25mW/200mW/500mW

I almost knew I want one. Matek 5.8GHz 40CH VTX-HV is quite interesting design. It can be mounted above flight controller: M3 mounting holes are 30.5 apart. That's not all, it supports serial protocol (Tramp), can be powered from 5V rail or main LiPo (7-24V), has u.fl IPX connector, comes with small dipole antenna and SMA pigtail, has 3 power levels (25mW, 200mW and 500mW) and supports Raceband.

Matek VTX-HV 5.8GHz 40CH 25mW/200mW/500mW

But the best feature are: 2 buttons and a set of LEDs. It really makes setup super easy. Press Button A to select function, press Button B to cycle options (power, band, channel). And current state is presented with LEDs. Cool. Not like with TBS Unify Pro where you have to count blinks!

Errata

Bangood stated it uses SmartAudio, but it is not true. It is ImmersionRC Tramp protocol. Thank you Andrey for pointing that out.

Hands on: FrSky XSRF3O flight controller

Since I just started to add support for "old" FrSky XSRF3O flight controller to INAV (expect this in a release after 1.8) it might be a good idea to share few words about it.

FrSky XSRF3O flight controller in a box

First of all, it comes in a box. Why am I mentioning this? Because none of my flight controllers, and I own at least more than a dozen, came in box. C'mon, this is huge! I'm not joking, this is really a nice touch.

Continue reading Hands on: FrSky XSRF3O flight controller

Toy Stirling engine = best toy ever and best Christmas gift?

How is it until Christmas? 2 months and something. Pretty close. And like every year there will be problem: what to buy someone who has everything? Tough one, right? Sweater? Socks? Toy Stirling engine? I vote for Stirling engine for sure. There is only one precondition: recipient has to like mechanics 🙂

I’ve tested the cheapest toy Stirling engine from china you can get. For less that $20 you get a functional engine model that, surprise, surprise, works. Amazing, right? Here is my video review of it:

Oh, by the way, for me, this is the best toy ever!