A
Stereo IR Wireless speaker system built with these modules. This photo
was made using IR photography. Note the LEDs appearing as bright points.
They are invisible to the unaided eye but bright in the near infrared
region
This
is an infrared audio receiver that receives audio information modulated
on an infrared beam. The PC board on left is the receiver and a set of
AA batteries power the receiver. This entire assembly mounts in a plastic
meter case
This
is the IR transmitter board, shown with four IR LEDS mounted for use as
a transmitter. The LEDS may be mounted in optics or a reflector assembly
to control the beam and coverage area
The
IR receiver board contains all the receiver and audio circuitry and will
run from 9-12 volts DC (6 to 8 AA cells). It will deliver up to 1 watt
of audio to directly drive a loudspeaker. The photodiode may be mounted
off the board in an optical assembly (Lens or parabolic mirror) to increase
range.
