Burning LED

hi guys! this time I want to show the results of my project, i.e. led intensity. led intensity is a condition where the intensity of the LED changes every 200 milliseconds. make the value of the LEDs vary so that the LEDs look like a burning object. Without a long wait, let's see how to assemble them.
Step 1:Materials Needed

- 1x 9V battery
- 1x Arduino UNO
- 4x LED
- 1x Half breadboard
- 2x jumper wires
- 1x Battery holder with power jack
- 1x USB type A to type B
Step 2:Stringing Components
![Untitled Sketch.fzz_ - Fritzing - [Breadboard View] 5_10_2020 9_32_11 PM (3).png](/proxy/?url=https://content.instructables.com/FPH/YWI6/K9YL0HPA/FPHYWI6K9YL0HPA.png&filename=Untitled Sketch.fzz_ - Fritzing - [Breadboard View] 5_10_2020 9_32_11 PM (3).png)
arrange the components you provide. don't place the polarity (cathode-anode) wrong. Because it can cause this project to fail.Anode to digital 5.Cathode to GND.
Step 3:Code

this project is very dependent on the code provided. Here is the code that must be uploaded to Arduino:
const int PIN_LED = 5; // Pin PWM
void setup() {
pinMode(PIN_LED, OUTPUT); }
void loop() {
int nilaiAcak = random(176);
analogWrite(PIN_LED, 60 + nilaiAcak);
delay(200); }
Step 4:It Works!

This project should be successful. If it doesn't work, maybe you are not careful enough. Look at the circuit or code.