[Lab] Anyone with RF experience?
jason.cobill at gmail.com
Wed Dec 3 11:05:02 EST 2014
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
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.
On Wed, Dec 3, 2014 at 10:33 AM, Richard Wiens <richard.wiens at rogers.com>
> 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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