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Old Oct 22, 2012, 04:23 PM
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kristaps_r's Avatar
Latvia, Riga
Joined May 2010
654 Posts
Yippee!
NEW 3in1! 3way Video switch, RC Shutter, High current switch for FPV & AP

Hi Guys,

I want to present you small multifunctional device I have made for FPV and Aerial Photography. I call it RC Camera Controll (RCCC).



RCCC has following features:
  • 3 Channel RC Video Switch (switch one of 3 video inputs to video output)
  • High current LED switch output (Strobe and Headlights)
  • RC Camera shutter control (Focus, Shutter and GoPro mode)
  • LiPo battery low voltage alarm
  • 2 Channel mirroring from sum PPM stream for Pan/Tilt
  • Sum PPM or 3 PWM input control from RC receiver

You can buy some of this stuff here:
It is small 23mm x 40mm (including connectors) board weighting approximately 8g with cable that combines 3 devices: Camera shutter, Video switch and High current switch. It is controlled with sum PPM or regular servo signals from RC receiver.

3 CHANNEL RC VIDEO SWITCH
You can use 3 source video switch for example to switch between flight camera, GoPro camera and back view camera in your FPV plane or multicopter.

LED RC SWITCH
You can use high current (up to 2A) switch to control LED stobe and Headlight (1W...10W) LEDs and also have low battery warning indicated on Headlight LED's.

RC SHUTTER
Shutter is compatible with GoPro HERO1 and HERO2, all C3 plug and 2.5mm plug Canon cameras, Nikon cameras and also many other cameras that have shutter connector.
I have tested GoPro HERO2, Canon 5D, Canon 600D, Nikon D5000.
(Shutter function with GoPro camera operates as On/Off switch. You must set GoPro to One Button mode to start recording when turned On)

You can use Shutter controll to turn ON GoPro camera while in flight to record only needed footage and turn OFF before landing.
GoPro HERO 3 Silver and Black can be turned ON but not OFF. I have heard that White can also be turned OFF (not tested).

I also have Multifunctional GoPro cable with 3 functions:
  • Video out
  • Charging of GoPro in flight (or fly without battery)
  • Turn on/off GoPro when connected to RCCC board (Use OneButton mode to start recording after power ON)

Using live video from GoPro is not recommended as primary video for FPV because it has some delay.
It works with HERO1,2,3,3+.
With HERO 3 you can get video out, turn it ON (but not OFF) and charge camera (with latest firmware update).
If cable plugged in HERO2 new playback menu item appears and you can play captured videos.

GoPro camera compatibility chart


Here is video where I tried to show all features of RCCC
RCCC V1.0 (1 min 11 sec)


Strobe function added in v1.1
RCCC v1.1 High Current Switch functions (0 min 28 sec)


Here I am using video switch function for FPV
Video Switch (1 min 17 sec)


Multifunctional GoPro cable
GoPro HERO2 mutifunctional bus cable demonstration with RCCC device (0 min 44 sec)


Please feel free for any questions.
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Old Oct 22, 2012, 04:23 PM
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kristaps_r's Avatar
Latvia, Riga
Joined May 2010
654 Posts
HELPFULL INFORMATION

Setup when using regular servo channel outputs (PWM) RCCC V2
RCCC V2 Setup - regular servo channel control (PWM) (3 min 52 sec)


Setup when using sum PPM RCCC V2
RCCC V2 Setup - regular servo channel control (PPM) (3 min 49 sec)


Setup when using regular servo channel outputs (PWM) RCCC V1.X
RCCC v1.0 Setup - PWM (1 min 27 sec)


Setup when using sum PPM RCCC v1.1
RCCC v1.1 Setup - PPM (1 min 9 sec)


Setup when using sum PPM only RCCC v1.0
RCCC v1.0 Setup - PPM (1 min 11 sec)
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Old Oct 22, 2012, 05:09 PM
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United States, FL, Jacksonville
Joined Feb 2010
950 Posts
Very cool and well priced! This would be really good for aerial photography with a multi-rotor. Could fly into position with the FPV cam, turn on altitude hold and position hold, then switch to aerial cam that you could have on a gimbal system and position it how you like then take a picture.
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Old Oct 22, 2012, 08:32 PM
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Canada,Quebec
Joined Jan 2005
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What is the current capacity of the switch?

Hugo
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Old Oct 23, 2012, 01:48 AM
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Latvia, Riga
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I use N channel mosfet that is rated not less than 8 amps, but I haven't tested it with really heavy loads like this. I will try to do that using automotive headlight bulb.

Usually pin headers and connectors are rated for 3 amps. 3 amps should be no problem for this board.

I will post the results when I finish testing.

Kristaps

Quote:
Originally Posted by Hugeone View Post
What is the current capacity of the switch?

Hugo
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Old Oct 27, 2012, 07:50 AM
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Latvia, Riga
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So I tested RCCC with 60 Wat automotive bulb that is 5Amps at 12V.
After 10s switch became hot. I didn't tested longer than 30s (maybe some day in fire safe place)

RCCC v1.0 5amp current test (0 min 23 sec)


I think 3 Amps continous will be OK (will find 36W bulb to test).

And if you need 60W for something, you can use it for short times or added heatsink

Kristaps

Quote:
Originally Posted by Hugeone View Post
What is the current capacity of the switch?

Hugo
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Old Oct 28, 2012, 01:46 PM
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Can you post some pictures of your camera connectors, for example to a gopro?
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Old Oct 28, 2012, 01:55 PM
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Latvia, Riga
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Right now I have picture of my first GoPro cable, that has pretty big connector.


I Just got other connectors that are smaller and will solder cable next week and will have photo.
I will make photos of all available cables as soon as I will have them assembled.

Quote:
Originally Posted by boopidoo View Post
Can you post some pictures of your camera connectors, for example to a gopro?
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Old Oct 29, 2012, 10:15 AM
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Latvia, Riga
Joined May 2010
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Don't have good lights for photography but here are cables for GoPro and Canon with C3 connector.

Hi resolution pictures in first post.

All shutter cables have 3 pin servo female connector that connects to RCCC board like in this picture:


P.S. More pictures will come.

Kristaps
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Old Oct 29, 2012, 10:19 AM
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Denmark, kbh
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Quote:
Originally Posted by kristaps_r View Post
So I tested RCCC with 60 Wat automotive bulb that is 5Amps at 12V.

Be careful: The resistance of a light bulb is strongly temperature dependant. When the filament is cold, the resitance could easily be half or less of the resistance when white hot. The initial current of a 60W, 12V light bulb could be 10-15A.

Nice device you have designed, BTW.
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Old Oct 29, 2012, 12:16 PM
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Ok, so the gopro cable is only on/off? What about rec on/off and AV out? Is this possible with some kind of connector?
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Old Oct 29, 2012, 12:35 PM
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Latvia, Riga
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GoPro cable is used to turn GoPro On or Off because GoPro connector interface does not have record pin. All existing solutions I know for GoPro use power On/Off.
To start recording after power on you have to enable One button mode.

Kristaps


Quote:
Originally Posted by boopidoo View Post
Ok, so the gopro cable is only on/off? What about rec on/off and AV out? Is this possible with some kind of connector?
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Old Oct 29, 2012, 03:08 PM
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I am thinking also about AV out function using GoPro accessory connector, but at the moment don't have time for that.
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Old Nov 15, 2012, 03:01 PM
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Latvia, Riga
Joined May 2010
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New Batch

Hi,

Finally I have new batch of RCCC boards.
This time it is little improved:
  • Power source solder jumpers on bottom of board changed to connect 5V from RC receiver to switch output. Now you can switch 5V LEDs without battery connected.
  • Added strobe function to Switch output. Switch now has 3 states: OFF, Strobe, Steady ON.
  • Ability to disable some of functions (Shutter, Video, Switch) when using sum PPM. If you don't have enough channels you can use only one or two of them.
Boards are labeled RCCC V1.1


Cables also have just arrived and I have shutter cables for Canon with C3 and 2.5mm connectors, Nikon with N3 connector and GoPro 30pin connector.

Kristaps
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Old Nov 16, 2012, 10:03 AM
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robineche's Avatar
france
Joined Jan 2007
111 Posts
Can I use this board with a MK Flight controller ?
( wiring on a servo output for instance )

Your solution is cheaper than the GentleWIRE cable to control my canon 600d.
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