diff --git a/src/calc/calc.c b/src/calc/calc.c
new file mode 100644
index 0000000..e69de29
diff --git a/src/calc/calc.h b/src/calc/calc.h
new file mode 100644
index 0000000..e69de29
diff --git a/src/input/input.c b/src/input/input.c
new file mode 100644
index 0000000..e69de29
diff --git a/src/input/input.h b/src/input/input.h
new file mode 100644
index 0000000..e69de29
diff --git a/src/led/led.c b/src/led/led.c
new file mode 100644
index 0000000..e69de29
diff --git a/src/led/led.pio b/src/led/led.pio
new file mode 100644
index 0000000..e69de29
diff --git a/src/main.c b/src/main.c
index 54f15db..5acc467 100644
--- a/src/main.c
+++ b/src/main.c
@@ -43,21 +43,14 @@ int main()
 	sleep_ms(100);
 	tft_start_pixels(lcd_config.pio, lcd_config.sm);
 	while (true){
-		for(size_t i = 0; i < 8; i++) {
-			tft_fill(0);
-			dma_channel_wait_for_finish_blocking(dma_chan);
-		}
 		tft_start_pixels(lcd_config.pio, lcd_config.sm);
-		absolute_time_t start = get_absolute_time();
-		for(size_t i = 0; i < 8; i++) {
-			tft_fill(31807);
-			dma_channel_wait_for_finish_blocking(dma_chan);
-		}
-		absolute_time_t end = get_absolute_time();
-		volatile int64_t diff = absolute_time_diff_us(start, end);
+		tft_fill(0);
+		dma_channel_wait_for_finish_blocking(dma_chan);
+		sleep_ms(1000);
+		tft_start_pixels(lcd_config.pio, lcd_config.sm);
 		tft_fill(31807);
 		dma_channel_wait_for_finish_blocking(dma_chan);
-		// actual refresh rate ~25hz
+		sleep_ms(1000);
 	}
 	return 0;
 }
diff --git a/src/tft.c b/src/tft/tft.c
similarity index 81%
rename from src/tft.c
rename to src/tft/tft.c
index c6a66cc..78960fa 100644
--- a/src/tft.c
+++ b/src/tft/tft.c
@@ -60,13 +60,17 @@ void tft_init(const struct tft_config* config, int dma_channel) {
     gpio_put(tft_cfg.gpio_bl, 1);
 }
 void tft_fill(uint16_t color) {
-    uint32_t color_left = ((uint32_t)color) << 16;
-    uint32_t two = 0;
-    two |= color_left;
-    two |= color;
-    uint32_t pix_buf[320*480/4]; 
-	for(size_t i = 0; i < 320*480/4; i++) {
-		pix_buf[i] = two;
+    for(size_t i = 0; i < 8; i++) {
+		dma_channel_wait_for_finish_blocking(dma_chan);
+        uint32_t color_left = ((uint32_t)color) << 16;
+        uint32_t two = 0;
+        two |= color_left;
+        two |= color;
+        uint32_t pix_buf[320*480/4]; 
+	    for(size_t i = 0; i < 320*480/4; i++) {
+	    	pix_buf[i] = two;
+	    }
+        dma_channel_set_read_addr(dma_chan, pix_buf, true);
 	}
-    dma_channel_set_read_addr(dma_chan, pix_buf, true);
+
 }
\ No newline at end of file
diff --git a/src/tft.h b/src/tft/tft.h
similarity index 100%
rename from src/tft.h
rename to src/tft/tft.h
diff --git a/src/tft.pio b/src/tft/tft.pio
similarity index 100%
rename from src/tft.pio
rename to src/tft/tft.pio
diff --git a/src/ui/ui.c b/src/ui/ui.c
new file mode 100644
index 0000000..e69de29
diff --git a/src/ui/ui.h b/src/ui/ui.h
new file mode 100644
index 0000000..e69de29