diff --git a/src/main.rs b/src/main.rs
index 78a1a7a..e27afe1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -85,19 +85,19 @@ fn main() -> ! {
 
     let mut led_pin = pins.led.into_push_pull_output();
 
-    let mut row_data_pin = pins.gpio2.into_push_pull_output();
-    let mut row_clock_pin = pins.gpio3.into_push_pull_output();
+    let mut row_data_pin = pins.gpio4.into_push_pull_output();
+    let mut row_clock_pin = pins.gpio5.into_push_pull_output();
 
-    let mut col_data_pin = pins.gpio4.into_push_pull_output();
-    let mut col_clock_pin = pins.gpio5.into_push_pull_output();
+    let mut col_data_pin = pins.gpio2.into_push_pull_output();
+    let mut col_clock_pin = pins.gpio3.into_push_pull_output();
 
     let mut white_pin = pins.gpio6.into_push_pull_output();
     let mut black_pin = pins.gpio7.into_push_pull_output();
     let mut strobe_pin = pins.gpio8.into_push_pull_output();
 
     loop {
-        for x in 0..24 {
-            for y in 0..16 {
+        for y in 0..16 {
+            for x in 0..20 {
                 shift_out_bits(
                     1 << y,
                     16,
@@ -116,7 +116,7 @@ fn main() -> ! {
 
                 black_pin.set_high();
                 strobe_pin.set_high();
-                delay.delay_ms(20);
+                delay.delay_ms(5);
                 strobe_pin.set_low();
                 black_pin.set_low();
 
@@ -126,20 +126,20 @@ fn main() -> ! {
 
         led_pin.set_high().unwrap();
 
-        for y in 0..24 {
-            shift_out_bits(0, 16, &mut row_clock_pin, &mut row_data_pin, &mut delay);
+        for y in 0..16 {
+            shift_out_bits(0, 24, &mut col_clock_pin, &mut col_data_pin, &mut delay);
 
             shift_out_bits(
                 1 << y,
-                24,
-                &mut col_clock_pin,
-                &mut col_data_pin,
+                16,
+                &mut row_clock_pin,
+                &mut row_data_pin,
                 &mut delay,
             );
 
             white_pin.set_high();
             strobe_pin.set_high();
-            delay.delay_ms(20);
+            delay.delay_ms(5);
             strobe_pin.set_low();
             white_pin.set_low();