Connecting 200 LEDs divided into 3 groups with pwm

Using Arduino LEDs and Multiplexing
1

I wonder how to connect 200 LEDs divided into 3 groups with PWM control, to the Star Map without fiber optics.

The first group connect 30 LEDs 10mm;
The second group connect 70 LEDs 5mm;
The third group connect 100 LEDs 3mm;

Would you like to fade these LEDs using the Arduino.

Do not know much about electronics.

2

You probably want to drive the LEDs with a higher voltage (say: 12V to 50V) so you can put a bunch of LEDs in series. Try this online calculator:

http://led.linear1.org/led.wiz/

Then you can use an NPN transistor that can handle the voltage and current to switch the array on and off via a PWM pin.

3