Electronics | Amateur radio | Nerdy Stuff
Apart from measuring regular capacitor and inductor parts, an LC100-A LC meter can be handy tool for measuring the inductance of your mini-quad motor windings, to determine if a particular motor has shorted turns or not.
To make the LC100 a bit more work bench friendly, a few modifications have been implemented.
7 – 15VDC Input Modification
The LC100-A expects … Read more...
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:
https://vk4ghz.com/the-0-06-fpv-camera-protector-shield/
🙂… Read more...
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 Effio-V board camera weighs 15g, the version in the housing weighs 22g.
I couldn’t care less about 7g more.
It’s … Read more...
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 low cost low volts alarm from Hobby King, here’s an easy solution.
It simply involves removing one of the piezo … Read more...
The Naze32 Flight Controller has a “lost model beeper” output, which looks like this on the schematic diagram:
We can see the beeper output is an open collector transistor, pulling one side of the piezo down to ground.
The other side of the piezo goes to +5V.
Check the specs of your piezo buzzer.
This is the piezo … Read more...
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 … Read more...
Following on from the prototype FPV microphone preamplifier assembled on Veroboard, a double-sided PCB was designed in DipTrace and the gerber files were sent to iTead studio, where 10 PCBs can be made for a paltry USD$10 + postage.
11 boards were actually received. Bonus!
This PCB is quite small at only 23 x18mm.
The 3-D … Read more...
Up until today, I have been using a piezo buzzer (AKA lost model buzzer) from NextFPV.
It was ok but not as loud as what I would have like, but it was still louder than another piezo I had tried previously.
In a quest to find an even louder beeper, a piezo buzzer Cat # S6109 $3.10 from the … Read more...
An inexpensive way to reduce the risk of LiPo leads and/or XT60 connectors getting nicked by propellers.
The previous LiPo Guard served a dual-role, to help protect the low profile 5.8 GHz cloverleaf antenna as well, but in progressing from “L” plates to “P” plates, and looking for more speed, this v2 guard adds almost no extra drag.
Bearing in … Read more...
I currently fly FPV using a 7″ screen with a built in 5.8 GHz receiver. ie; no goggles here yet.
This screen has built in speakers, and I was curious if being able to listen to real-time audio would be helpful, or not.
The VTX has a mono audio channel and expects line level audio coming into it, so a … Read more...
Was out flying with a mate a few days ago, and this was found in the park:
A frisbee!
This makes an ideal launch pad, to get the Blackout MIni H Quad up out of the grass:
Like so:
And it has enough mass not to be blown away with prop wash.
🙂… Read more...
The typical board-type FPV camera is quite vulnerable, especially to moisture.
It only takes one blade of damp grass to get inside the frame, and will temporarily stop the camera from functioning properly.
To improve the board’s resistance to moisture getting across the SMD components, both sides of the PCB are covered with a protective lacquer.
Any well equipped electronics … Read more...
I was grouping Mini Quad propellers in zip lock plastic bags, but I’m now trying this idea.
Using some wing nuts and bolts lying around in the drawers, it keeps the same types of propellers grouped together.
You can instantly see how many of a particular colour/type you have :
Keeps them neatly organised in the multi-rotor field tool … Read more...
Fed up with breaking VTX antennas and LiPo battery leads getting clipped by propellers whilst learning to fly a Mini Quad?
Here’s an idea, and costs almost nothing.
At this stage I’m not concerned about any potential drag, so if you are, best you press your back button now! 😉
This is all about protecting the antenna during the … Read more...
Here is a low cost ESC programming jig idea, for when you need to calibrate multiple ESCs in one hit.
Made in about 15 minutes, and doesn’t require sacrificing any leads.
This particular jig accommodates up to 6 ESCs for a hex or Y6, but you could make a 4, 6 or 8 ESC variant along the same lines.
Most … Read more...
Genuine OEM Belt Clip for Anytone AT-D878UV & AT-D868UV - 3 Pack
$21.00 AUD
Eltek Flatpack2 24/48V Touchscreen Controller Kit
$145.00 AUD
YK04 Remote Control Kit
$30.00 AUD
K3NG Universal Rotator Controller Kit
$109.00 AUD
K3NG Universal Remote i2c Starter Kit
$20.00 AUD
