You have to connect the serial bus cable from the uC to the Raspberry.
It was connected to the lower middle USB-Port in this case,

1. start bash
(2. workon cv-4.5.3.56)
3. python
4. import serial
5. s = serial.Serial('/dev/ttyACM0', 9600)

Now you can control the LEDs.

To let the stripe light up in one color:
s.write(str.encode('RRR-GGG-BBB'))
eg: s.write(str.encode('255-000-000'))

To let the stripe light up in one of the 20 color patterns:
s.write(str.encode('color_pattern_XX')), where x is 01-20
eg: s.write(str.encode('color_pattern_01'))

Now you can start a program to detect the leds