See how I can pick chimes right out of the
air!
Magic!
In this video, I will show you how I do this
with just a LIDAR Scanner and an Arduino.
Ok, sounds awful, but after some trainig:
Well, to be honest, I was cheating.
I am too lazy to practice, and so I coded
this into the Arduino Sketch and only moved
my hands.
But if you are interested in how I did this,
write it into the comments and subscribe to
my channel in order to never miss anything.
The rotating part that you see here, is the
LIDAR.
LIDAR is the abbreviation for "light detection
and ranging".
It works like RADAR, but uses Laser instead
of Microwaves.
The LIDAR is being controlled by an Arduino
Mega, that converts the measured distances
into chimes.
These are then fed into the microphone jack
of my computer for amplification and recording.
Lets see how the lidar works inside.
There is a small DC Motor, that drives a turntable.
Now I carefully remove the cap.
Inside, there are the Laser diode and the
receiver diode.
The Laser diode emits short pulses of Infrared
light which are reflected by the objects around.
The reflected light is then detected by the
receiver diode.
The electronics mesures the time between the
emission and detection of the reflected light
and calculates the distance.
The accuracy is less than one centimeter!
Watch the LIDAR's laser in action.
This is how it is seen by a Raspberry Pi infrared
camara.
You can clearly see the laser spot flying
around.
If my hands are in a sector of 90 degrees
above the LIDAR, the LIDAR harp will output
up to two tones a tine.
All the other sectors are ignored.
That´s all for now.
Thanks for your interest, see you later.
Bye-Bye
