3.3 GHz FPV Cloverleaf Antenna
I was curious about how much bigger a 3.3 GHz cloverleaf antenna would be, compared to a 5.8 GHz antenna, to see if it was a viable alternative for FPV downlinks on 250 class mini quad.
So, I converted a … Read more...
FPV
FPV Camera Crystal Repairs
Board cameras used in FPV applications can be quite vulnerable, and sooner or later, through-hole leaded components can fatigue and break off with vibrations.
One of the most fragile components is the crystal.
(Standard designator for a crystal is ‘Y’)… Read more...
How to Build an FPV Camera Shield
A “how to” build video for the FPV Camera Shield, so you can bang a set of five of these out in about 15 minutes.
[jwplayer mediaid=”5191″ image=”https://vk4ghz.com/wordpress/wp-content/uploads/Poster-FPV-Camera-Shield.jpg”]
Previously described:
https://vk4ghz.com/the-0-06-fpv-camera-protector-shield/
🙂
The $0.06 FPV Camera Protector Shield
Another FPV camera died today, and it will be the last open board camera I fit… they are just too vulnerable.
Replacing the dead Effio-V 800TVL is another Effio-V 800TVL, but the variant that comes in a housing:
An … Read more...
RX-LCD5802 Fixing a Loose Power Socket
The DC input socket on this RX-LCD5802 7″ 5.8 GHz diversity monitor had become loose, as I discovered when attempting to charge it one day.
Aside from feeling “not quite right”, you could wiggle the charge plug around a … Read more...
Headplay Mini HDMI Lead
What were the Headplay design engineers thinking???
The Headplay HD 7″ Headset picture looks absolutely stunning when fed with a HDMI source, but the lack of clearance with the connector shroud makes it impossible to use many of the common … Read more...
Headplay HD and Glasses
If you normally need to wear glasses, then rest assured, this is no problem with the Headplay HD 7″ headset.
Picture are worth 1,000 words.
It’s much easier to insert the glasses first, then put the whole thing up to … Read more...
Headplay HD 7″ FPV Headset Review
[jwplayer mediaid=”4777″ image=”https://vk4ghz.com/wordpress/wp-content/uploads/Poster-Headplay-Review.jpg”]
Headplay HD Push Button Wire Loom – Be Careful
Took delivery of a Headplay HD FPV headset, and not along after, took it apart.
As you do!
To help with splitting the two halves, hold the switch panel down with a finger or thumb whilst you separate the … Read more...
Low Volts Alarm Mod – Reducing the Volume
If you’re wearing a FPV headset, goggles, or perhaps have a ground station being powered off a lipo battery you’ll want a low volts warning, but not a loud ear-splitting alarm going off right next to your ear!
Based on … Read more...
MWOSD – Display RSSI via Spare Radio Channel
Displaying RSSI on the micro MinimOSD can be achieved without adding the extra wire between it and the FrSky D4R II receiver’s signal pin 2 (used in CPPM mode).
It’s not hard to add the wire, but if the micro … Read more...
FR632 5.8 GHz Diversity Receiver Teardown
Here we take a look inside the FR632 5.8 GHz diversity 32 Channel Auto Scan LCD A/V Receiver obtained from the Hobby King AU Warehouse for just under AUD$75.
Described as:
First impressions: this is extremely well made.… Read more...
Fixing Xiaomi Yi Out of Focus Problem
It appears to be a common problem – the Xiaomi Yi action camera’s lens has been incorrectly preset in the factory.
I’m guessing the Chinese assembly workers set the focus on something no further than ~ 50cm within their own … Read more...
5.8 GHz LNA for FPV Receiver
To increase 5.8 GHz FPV range and minimise receiver dropouts, a broadband microwave LNA (Low Noise Amplifier) is assembled and tested.
Whilst you could use a gain antenna like a helix, or quad patch antenna, extra antenna gain comes at … Read more...
Micro Minim OSD Mounting in Blackout Mini H Quad
Micro MinimOSD is a tiny On-Screen Display board that works with the Naze32 flight controller and came from Buzz Hobbies in Perth.
First thing to do was solder up Video In, GND, and Video Out wires up to the … Read more...