diff --git a/.gitignore b/.gitignore
index 8523ae6..3655197 100644
--- a/.gitignore
+++ b/.gitignore
@@ -116,4 +116,6 @@ _deps
 c/build
 !c/Makefile
 go/go_p2fa.h
-c/libs/go_p2fa.h
\ No newline at end of file
+c/libs/go_p2fa.h
+
+test.go
diff --git a/c/Makefile b/c/Makefile
index 644e977..8971525 100644
--- a/c/Makefile
+++ b/c/Makefile
@@ -27,7 +27,7 @@ else ifeq ($(USELIB_RPI), USE_LGPIO_LIB)
 else ifeq ($(USELIB_RPI), USE_DEV_LIB)
 	LIB_RPI += -lgpiod -lm
 endif
-LIB_RPI += -L./libs -lgo_p2fa
+LIB_RPI += -L./libs -lgo_p2fa -Wl,-rpath,./libs
 DEBUG_RPI = -D $(USELIB_RPI) -D RPI
 
 USELIB_JETSONI = USE_DEV_LIB
diff --git a/c/src/p2fa.c b/c/src/p2fa.c
index 1898a09..3596071 100644
--- a/c/src/p2fa.c
+++ b/c/src/p2fa.c
@@ -26,11 +26,22 @@ int draw() {
     EPD_2in13_V4_Init();
 
     Paint_Clear(WHITE);
+    Paint_DrawString(32, 10, "Hello, World!", &Font16, WHITE, BLACK);
+
     const char *confName = "default";
     GoString confStr = {confName, strlen(confName)};
     const char *code = getCode(confStr);
     Paint_DrawString(5, 5, code, &Font24, WHITE, BLACK);
 
+    Paint_DrawRectangle(10, 112, 240, 92, BLACK, DOT_PIXEL_1X1, DRAW_FILL_EMPTY);
+    uint64_t *timeLeft = getTimeRemainingMS(30);
+    for (int j = 0; j < 3; ++j) {
+        for (int i = getTimeRemainingMS(30); i > 200; i = getTimeRemainingMS(30)) {
+            Paint_DrawRectangle(10, 112, (timeLeft/(30*1000)) * 240, 92, BLACK, DOT_PIXEL_1X1, DRAW_FILL_FULL);
+            DEV_Delay_ms(100);
+        }
+    }
+
     DEV_Delay_ms(5000);
 
     Debug("Clear...\r\n");