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’)


This crystal, with one broken leg, will be moved to the other side of the PCB:

Move the …

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.

Previously described:

🙂…

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 mini HDMI leads out there.

You’re going to need a mini HDMI plug within a very small molded body, and … 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 your face, whilst putting the head strap over your head.


Temples slot in nicely between the foam padding pieces.… 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 workstation space.
The focus should be set on something much further away.

This is easy to rectify, once you have … 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 the tradeoff of directivity.

The object here is keep using omni directional antnnas, whilst achieving more receiver gain.

EBayer …