HC-12 wireless RF Module - Arduino disconnects with 5V

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hi all,

i wanted start , hc-12 working using tutorial on here:

http://www.instructables.com/id/long-range-18km-arduino-to-arduino-wireless-commun/


so, using 2 arduinos , 2 hc-12 modules , remaining parts mentioned in example, think have connected displayed in example images. used send-receive example hoping make led on receiving board blink when pushing button on sending board.

but, connect vcc wire board 5v pin on arduinos, arduinos power off. stay on when use 3.3 v led have on receiving board never blinks when push button on sending board. checked connections , setup on , on again , seems match example perfectly.

does sound familiar anyone?

thank you!

quote
but, connect vcc wire board 5v pin on arduinos, arduinos power off.
so, when create short circuit, arduino shuts down. seems reasonable, me.

post link hardware using, , schematic. instructuble credibility rates -3 on scale of 1 10.

posting code not amiss, either.


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