[Lab] Anyone with RF experience?

[Jason Cobill]

   I paid something like $120 for basically this, a remote flash trigger
for my camera.
   The camera closes a switch through the flash mount that activates
circuit A, wireless signals tell circuit B to close, triggering the flash
to fire.
   The magic is that it's so close to instantaneous I can shoot something a
hundred yards away with no delay, no running cables all around.

   Trigger units are coming down in price now (I imagine $1 circuits are
destabilizing the market) but you could probably make a killing in the
local photographer community selling rx/tx camera trigger kits.

   http://www.henrys.com/62352-CACTUS-WIRELESS-FLASH-TRIGGER-KIT.aspx


On Wed, Dec 3, 2014 at 10:33 AM, Richard Wiens <richard.wiens at rogers.com>
wrote:

> I bought a very cheap (like $1) 433 MHz TX/RX pair awhile back and have
> just started to play with it.  All I want to do is remotely activate a
> switch.  Lots of examples on the interweb of hooking each end up to an MCU
> and sending data, but I really just want to push a button at one end and
> have a motor turned on at the other end.  Tried a little experiment with
> LEDs and the interesting thing is that holding the button down on the TX
> end only seems to produce a 'pulse' at the RX end...the LED doesn't stay on.
>
> Other cheap/simple remote ideas welcome (it needs to work outdoors over
> about 30m with clear line of sight.
>
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