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Good 4 inch frame?
#16
I went for one of these for the VTX:

[Image: Matek_VTX-HV-video-transmitter-HV-VTX.jpg]
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#17
(07-Sep-2017, 02:16 PM)unseen Wrote: I went for one of these for the VTX:

[Image: Matek_VTX-HV-video-transmitter-HV-VTX.jpg]

Good choice, I was looking at this one as it has all the same functions as the Tramp but slim design and a little less $ (which is always a good thing)
[-] The following 1 user Likes RENOV8R's post:
  • unseen
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#18
(07-Sep-2017, 03:24 PM)RENOV8R Wrote: Good choice, I was looking at this one as it has all the same functions as the Tramp but slim design and a little less $ (which is always a good thing)

Yeah, it doesn't have the NFC wand feature, but that's not interesting to me anyway.

What I really liked was the fact that it stacks easily on top of your flight controller and that it includes a 1A 5V BEC which makes it perfect for powering the Split without having to use the flight controller's BEC. The real winning feature for me is the complete lack of "yet another connector".

Even though I have Molex Picoblade and JST-SH shells and pins with a matching Engineer crimp tool, I'd much prefer just to solder some nice flexible silicone insulated wires than make custom cables and plugs!

The fact that I can control the VTX from Betaflight is the icing on the cake.
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#19
It's slim enough that I'm wondering if it would actually fit between the AIO board and the Split?
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#20
(07-Sep-2017, 05:53 PM)RENOV8R Wrote: It's slim enough that I'm wondering if it would actually fit between the AIO board and the Split?

It might, but I'm a little worried about the heat from both the VTX and the Split's DVR processor. I'm not quite sure yet how I'm going to put it all together. I need to see where the hottest parts of each board will be and how the air flow looks.
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#21
(07-Sep-2017, 06:26 PM)unseen Wrote: It might, but I'm a little worried about the heat from both the VTX and the Split's DVR processor. I'm not quite sure yet how I'm going to put it all together. I need to see where the hottest parts of each board will be and how the air flow looks.

Great!  I've been wondering how much heat the Split produces.  I've got a couple sitting on my bench and want to integrate one into my QAV build.  You can be the guinee pig hahaha
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#22
The Runcam 3 gets pretty warm when it's recording and it has the same hardware inside as the Split. The DVR chip is doing real time compression of an HD video stream and that takes plenty of horsepower which translates to heat in the end.

It probably won't get hot enough to damage itself when mounted in a stack, but if there's a VTX right below or above it, things might start getting a bit too hot for comfort.

I'll do some testing once I have all the parts in. I've got a nice point and shoot IR thermometer that I can use to measure the temperatures, so it should be fairly easy to look at what temperatures both the Split and the Matek VTX will reach.
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#23
Well, it's a start at least!

[Image: IMG_20170912_183520_zpsctpduhne.jpg]
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#24
All the electronics arrived yesterday and my motors are now on a flight from Singapore and are scheduled for delivery tomorrow!

I might end up swapping the flight controller for the even newer and more bleeding edge Racerstar Tattoo F4S AIO as that has a dataflash chip for some minimal black box logging and also has BLHeli_32 ESCs. It might need to be fitted sideways though as the USB connector is at the front, rather than the rear and it might be difficult to get to. I'll know more about that once I've actually started mounting everything to the frame.

The only problem with these everything in one boards is the lack of UARTs. After one is used for the receiver, there's only one UART free! So if I want to use SmartPort and control the Matek VTX with the Tramp interface, I'll have to remap the LED output as a soft serial for SmartPort. If I also want to connect the Runcam Split to the flight controller, I'll have to connect some tiny wires to pins PB10 and PB11 on the MCU to access UART3. That's some very, very fine soldering work, but with a steady hand and a microscope, it should be possible.
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#25
I burned my fingers once on chip soldering :S respect for just giving it a go Tongue
Hating UART limitations, even with 4 UARTS (1 usb and 1 serial receiver) there is not much left.
Check out my videos @ www.youtube.com/Marcelfint and let me know what you think!
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#26
It used to be that three UARTs was plenty, but the last half a year has seen more and more parts of our machines adding serial control interfaces.

First was SmartPort, which wants two serial interfaces for one receiver, then came TBS SmartAudio and ImmersionRC Tramp taking another serial interface to control your VTX and now the Runcam Split offers control on yet another serial interface. If your OSD isn't directly connected via SPI, there's another serial interface used and now we have ESC telemetry to take up yet another serial port. Thankfully, you can put all four ESCs on one port, but even so, it's another port used and if you then want to add a GPS receiver to the mix, even an F405 with all the ports available isn't going to have enough ports.

It's great to be able to control all these things from the flight controller as it offers exceptional flexibility but in hindsight, implementing all these interfaces as serial ports might not have been such a good idea. It would seem that those who were suggesting some time ago that designers started moving to CAN Bus instead of serial ports were on the right track.
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