using an external power supply crashes my light strip

src/main.rs

@@ -2,11 +2,11 @@ pub mod util;
 
 use util::lights::*;
 use std::sync::{Arc, RwLock};
-use std::thread;
 use rs_ws281x::{RawColor, Controller, ControllerBuilder, ChannelBuilder, StripType};
+use std::{thread, time};
 
-pub const LED_SIZE: usize = 450;
-pub const BRIGHTNESS: u8 = 255;
+pub const LED_SIZE: usize = 450; //450
+pub const BRIGHTNESS: u8 = 150;
 
 fn main() {
     let p: RawColor = [0, 0, 0, 0];
@@ -21,23 +21,25 @@ fn main() {
         .strip_type(StripType::Ws2812)
         .brightness(BRIGHTNESS)
         .build()
-	.expect("Could not construct LED Channel.");
     )
     .build()
     .expect("Could not construct LED Controller.");
 	loop {
         	let lights = lock_c.read().expect("Could not read array lock.");
-        	run_lights(&mut controller, &lights);
+        	run_lights(&mut controller, &lights).expect("Error running lights controller.");
 	}
     });
     let mut x: u8 = 0;
-    loop { 
+    loop {
+        thread::sleep(time::Duration::from_millis(250));
         if x == 255 {
             x = 0;   
         }
-        let color: RawColor = [x, x, x, 255];
+        let mut color: RawColor = [x, x, x, 150];
         let mut lights = lock.write().unwrap();
-        lights[0] = color; 
+        for i in 0..LED_SIZE {
+            lights[i] = color;
+        }
         x += 1;
     }
 }

src/util/lights.rs

@@ -4,14 +4,14 @@ use rs_ws281x::WS2811Error;
 use std::{thread, time};
 
 pub fn run_lights(controller: &mut Controller, values: &[RawColor; crate::LED_SIZE]) -> Result<(), WS2811Error> {
-    // println!("Value: {:?}", strip[0]);
-    thread::sleep(time::Duration::from_secs(1));
+    println!("Value: {:?}", values[0]);
+    //thread::sleep(time::Duration::from_millis(10));
     let channels: Vec<usize> = controller.channels();
     let mut strip = controller.leds_mut(channels[0]);
     for i in 0..strip.len() {
         strip[i] = values[i];
     }
 
-    controller.render();
+    controller.render().expect("Error rendering.");
     controller.wait()
 }