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= Info =

This is an add-on board with two switched outputs and a 9V and 12V voltage tap. <<BR>>
The board can be connected to the switching outputs "OUT1 and OUT2 of the FlightCtrl. This allows LEDs to be switched or a camera to be triggered.

 '''Shoplink: [[https://www.mikrocontroller.com/index.php?main_page=product_info&cPath=65&products_id=576|Extension-PCB (Set)]]'''



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= Assembly =

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The board must still be equipped with the enclosed components. This requires a suitable soldering iron and basic knowledge in soldering.

'''When fitting the LED and the optocoupler, please pay attention to the correct installation direction.'''


The parts list consists of:
 * Resistance 1k Ohm (R4/R5)
 * Capacitor 100nF (C6/C8)
 * Mosfet FDD6637 (FET1/FET2)
 * LED "green" (LED1/LED2)
 * DC converter 9V 7809DT (IC4)
 * DC converter 12V TSR 1-24120 (IC2) ([[https://www.mikrocontroller.com/index.php?main_page=product_info&cPath=74&products_id=573|optionally available]])
 * Optocoupler TCMT1106 (OK1)



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= Circuit diagram =

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These connections are available:

||||||||<class="MK_TableNoBorder" tablestyle="width: 70%">||
 ||<width="45%" class="MK_TableNoBorder" -2>'''__Input__'''||<width="5%"class="MK_TableNoBorder">||<width="45%" class="MK_TableNoBorder"-2>'''__Output__'''||
 ||<class="MK_TableNoBorder">'''J7'''||<class="MK_TableNoBorder">switching input 1 (Out1 !FlightCtrl)||<class="MK_TableNoBorder">||<class="MK_TableNoBorder">'''9V'''||<class="MK_TableNoBorder">+9V out (from IC4)||
 ||<class="MK_TableNoBorder">'''J6'''||<class="MK_TableNoBorder">switching input 2 (Out2 !FlightCtrl)||<class="MK_TableNoBorder">||<class="MK_TableNoBorder">'''12V'''||<class="MK_TableNoBorder">+12V out (from IC2)||
 ||<class="MK_TableNoBorder">'''5V''' ||<class="MK_TableNoBorder">+5V connection from !FlightCtrl ||<class="MK_TableNoBorder">||<class="MK_TableNoBorder">'''S1/-''' ||<class="MK_TableNoBorder">switching output 1 (+12V switched) ||
 ||<class="MK_TableNoBorder">'''+/-''' ||<class="MK_TableNoBorder">voltage input (15-36V) ||<class="MK_TableNoBorder">||<class="MK_TableNoBorder">'''S2/-''' ||<class="MK_TableNoBorder">switching output 2 (+12V switched) ||
 ||<class="MK_TableNoBorder"> ||<class="MK_TableNoBorder"> ||<class="MK_TableNoBorder">||<class="MK_TableNoBorder">'''C+/C-''' ||<class="MK_TableNoBorder">switching output 1 (closing contact) ||
 ||<class="MK_TableNoBorder"> ||<class="MK_TableNoBorder"> ||<class="MK_TableNoBorder">||<class="MK_TableNoBorder">'''-''' ||<class="MK_TableNoBorder">GND ||
 
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{{{#!wiki tip 

If the input voltage is 15V or more, a 12V Traco / Recom (IC2) should be soldered.<<BR>>
If the input voltage is lower then 15V (e.g. you use a 2S/3S Lipo), you can also solder a solder bridge over the outer pads instead of a 12V Traco / Recom.<<BR>>
ATTENTION: with a solder bridge the Lipo voltage will be applied to the pads "12V" / "S1" / "S2" !

[[ http://gallery3.mikrokopter.de/var/albums/intern/MK-Baugruppen/ExtensionPCB/ExPCB-Bruecke-IC2.jpg?m=1530079459 | {{ http://gallery3.mikrokopter.de/var/thumbs/intern/MK-Baugruppen/ExtensionPCB/ExPCB-Bruecke-IC2.jpg?m=1530079459 }} ]]

 
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= Test =

After mounting the board, you can easily check the function. <<BR>>
If you close the contact "J6" or "J7" with GND, the respective output is switched through and the associated LED lights up.


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In the default setting there is no voltage at the outputs "S1" and S2 "and the switching output" C + / C- "has no continuity.

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If contact '''"J7"''' is connected to ground, "LED1" lights up and 12V is connected to "S1".<<BR>>
In addition, the switching contact "C + / C-" is bridged via the optocoupler ~-(observe polarity during measurement / connection)-~.
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And if the contact "SJ1" is bridged on the back side, 5V is at the pads "C - / -" ~-(only if you have connect the 5V input)-~.

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If contact '''"J6"''' is connected to ground, "LED2" lights up and 12V is connected to "S2".<<BR>>



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= Connection FlightCtrl =

The inputs "J6", "J7" and "5V" are connected to the switch output "Out1", "Out2" and "+5V" <<BR>>
of your !FlightCtrl. At the pads "+" and "-" the Lipo voltage is applied.


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= Connection examples =

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'''__Voltage tap__'''
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For the connection of external consumers (e.g. a video transmitter) 9V (0.5A) and 12V (1A) are available.
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~-
'''Attention:''' <<BR>>
If a bridge was soldered in place of the 12V Traco (IC2), the full lipo voltage is applied to the pad "12V", "S1" and "S2" !!!<<BR>>
The switching outputs "S1" and "S2" are then with max. 55A loadable.
-~
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'''__Connection lighting__'''
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LEDs can be connected to the switching outputs S1 and S2 and switched independently of each other. <<BR>>
Please note that the connected LEDs together do not need more then the max. 12V / 1A.<<BR>>
~-(Exception if a bridge is used instead of IC2)-~

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'''__Connection lighting + Shutter__'''
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In addition to lighting, a trigger for a camera can also be connected. <<BR>>
The lighting is then connected to the switching output "S2". The pads "C + / C-" can then be used to connect a trigger for the used camera.<<BR>>
~-(To protect the camera, the switching output "C + / C-" is connected via an optocoupler. When the contact is closed, a resistance of approx. 100 ohms is applied. When connecting the trigger, pay attention to the correct polarity. GND is on "C-", Focus and Trigger on "C +")-~


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'''__Connection lighting +  Canon-Ixus with CHDK-Script__'''
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If you use e.g. a Canon camera with ''CHDK-script'' you can also trigger this camera via e.g. a USB plug (if supported by CHDK for the used camera).<<BR>>
To do this, the solder bridge "SJ1" on the back must be closed. The USB plug is then connected to the pads "C-" (+5V) and "-" (GND).
























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