In the first build, we used the TX5823 and 1g camera. The result was okay, it was really small and light weight, my mini quad was able to carry it and still had good flight time. However the noise caused by the motors really upset this FPV setup.
I tried making a power filter for it which didn’t help. In the end I had to get a separate Lipo battery to power this 5.8Ghz FPV setup. Although the battery is light, only 5grams, but the weight of the FPV setup has increased to a total 12g! I wasn’t particular happy with this.
There are other options, some are more expensive, but saves you trouble from DIY.
What is new in the second FPV combo build?
So I decided to build a second micro FPV setup, using a much better mini video transmiiter with built-in power filter and voltage regulator. I am also using a cheaper mini FPV camera to even out the extra cost by the VTX, so the total cost of this build is about the same as the previous one. And the result is amazing! I can comfortably power this FPV combo using the main battery, and I don’t even get any noise at all at full throttle. Total weight of this setup is 6.5g, almost half of the previous version.
Parts and Assembly
AltitudeRC 5.8GHz 25mW Nano FPV Transmitter – FatShark Compatible
The reason that I love this VTX is because of the built-in power filter. It really helps reducing noise in the power, which I couldn’t do with my custom made LC filter.
I am extremely lucky to catch a good deal here, after my purchase of this video transmitter, HK decided to put the price up, I probably saved $15 on this one :)
Note that this VTX runs on a different frequency band (Fatshark, ImmersionRC band) than the TX5823 which is the Boscam band.
Get yours from Hobbyking.
I remove the heatshrink and cut the antenna as short as possible. On the package, it clearly shows you how long you should cut the antenna to.
600TVL 120degree Wide Angle Super Mini FPV Camera with MIC
This mini FPV camera is as good as the 1g camera with wide angle lens (if not any better). It comes with a 170 degree wide angle lens, and it’s only 1/4 the price of the 1g camera.
Get the camera from Banggood.
Alternatively you can also use this one from Surveilzone.
This camera comes with a Mic which I removed since I don’t need audio. And I also removed the green and white wires (audio output) to save weight.
Note that the AltitudeRC video transmitter has a voltage output dedicated for the camera, which is rated at 3.3V, just perfect :D . I also twisted the power and ground wires, that helps reduce noise in the power. The whole thing weights only 6.5g, which is not bad at all!
My maiden flight with this setup.
Now, back to the Micro Quad build log.