My Work In Progress

Lynxmotion UAVs / Drones
21

Some time in April I ordered the Suppo camera for my drone.

I had to wait to get a transmitter and receiver, but I have been trying to get this going for a little bit now and getting no-where…quickly

Is there any way to test this thing to see if it actually works?

I hooked it all up on the UAV and realized that I had nothing I could use the receiver with.

After a number of different cables, and a special interface box that goes FROM rca to hdmi, I am no further ahead.

HDMI on my tablet is output only… Go Figure!

I plug it (camera only) into my Win 10 PC using the USB connection. My computer doesn’t see it.

The red light on the camera lights up to say it has power. Yep. I’m impressed. It did that on the drone too.

I bought a pair of OTG cables, and both my smartphone and my tablet indicate that they support OTG.

I bought a 40 channel OTG 5.8ghz receiver. Beautiful looking little unit.

I can set a frequency on the transmitter, and autoscan on the receiver and it appears that some miracle is happening as the receiver detects a frequency is being used.

I have been installing different apps on the phone to see if I can get anything to display. Nada!!!

My phone and my tablet both see the Receiver as being connected, but I can’t pick up anything from the transmitter to verify the camera is working.

There are some great tutorials on the web using OTG and receiving images from the UAV’s camera

None of them are using the camera that I am using.

I know the receivers want between 8 and 13 VDC and they will only get 5V from USB, so I don’t know if maybe that is just too little to make the receiver work properly.

It’s too bad, because I have 12VDC on the UAV which I have to drop down to 5V for the transmitter and 5v for the receiver that I need to be 12V. It would have been good if the power requirements were swapped!

I’m building a saddle for my wife so she can sit on the UAV with her cell phone and take pictures for me. She says it’s still too cold here right now, but maybe when the weather warms up…

Any ideas?

Thanks,

Tim

22

Not sure which devices you are using together at this point.
Most of the FPV (including Suppo) will output an Analog signal in the same type you can have on a standard “yellow RCA” connector for TV.

If you want to use it on a PC or Mobile device it’s getting more complicated as you need to convert this signal to a digital one.
What’s the USB thing you got ? Any links and/or images ?

:slight_smile:

23

I thought that it was simply transmit and receive and didn’t really consider Analog vs digital. Yes, the original R60 outputs to RCA connectors.

Since none of these devices seem to come with reasonable documentation it’s hard to know what your are dealing with.

In the specific case of hooking the Suppo up to a PC or SmartPhone, since the connection is USB, I would expect that whatever signal conversion or processing has to happen would happen inside the Suppo to conform with whatever the USB standard is.

For example, I can connect a keyboard to the PC with the old style din circle connector direct to the motherboard and it will work, or I can get a converter that accepts the din connector and provides a USB connection, and as long as I can get drivers for the keyboard, it will work.

A mouse would be a better comparison since it is a serial device. I expect a serial mouse is analog, but maybe it is digital to start with.

Here is a link to the receiver

amazon.ca/Tomlov-Wireless-R … B01LKPH3EY

There is nothing that says this is analog or digital, and since it is a receiver, it should just pass the data that is coming from the transmitter should it not?

Now I am concerned.

If I had a monitor that would accept analog input I could see if it mattered whether I used the R60 or this OTG receiver. I don’t think it should matter.

Best,
Tim

24

Hi DiaLFonZo

Please forgive yet another complaint about the lack of documentation or poor quality of same as supplied by the manufacturers.

The X40 Transmitter needs 12V. (Period) - As does the R40 Receiver.

The Happymodel VMR40 OTG Mobile Video Receiver needs 12V. (Period)

My clue was the power led on the camera. It was only on steady when connected to the USB on the computer.

On the drone it was flashing once per second. That translated from an inspired guess to mean that the camera had power, but no input signal.
Not Mentioned Anywhere In The Documentation!!!

When I powered the X40 transmitter from a 12V wall transformer, the power light stopped flashing and stayed on steady.

I supplied the VMR40 OTG with 11.1V from the UAV battery and connected it’s USB OTG cable to the phone.

I ran the autoscan on the VMR40 and flashed past an image that could only have come from the camera. I backed up two channels on the receiver and got a crystal clear image.

There may be a better app on google play than CameraFi, … but … now that I connect, I can try different apps.

I was feeding the transmitter on the drone from +5V on the PDB. That’s easy to move to a 12V terminal which is obviously necessary.

Best,
Tim