diff --git a/examples/pico_display/CMakeLists.txt b/examples/pico_display/CMakeLists.txt
index d6f1847a..187ff8f4 100644
--- a/examples/pico_display/CMakeLists.txt
+++ b/examples/pico_display/CMakeLists.txt
@@ -1,11 +1,2 @@
-add_executable(
-  pico_display_demo
-  pico_display_demo.cpp
-  image_data.cpp
-)
-
-# Pull in pico libraries that we need
-target_link_libraries(pico_display_demo pico_stdlib hardware_spi hardware_pwm hardware_dma rgbled pico_display pico_graphics st7789)
-
-# create map/bin/hex file etc.
-pico_add_extra_outputs(pico_display_demo)
\ No newline at end of file
+include("${CMAKE_CURRENT_LIST_DIR}/pico_display_demo.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/function_test.cmake")
diff --git a/examples/pico_display/function_test.cmake b/examples/pico_display/function_test.cmake
new file mode 100644
index 00000000..0516ce53
--- /dev/null
+++ b/examples/pico_display/function_test.cmake
@@ -0,0 +1,10 @@
+add_executable(
+  function_test
+  function_test.cpp
+)
+
+# Pull in pico libraries that we need
+target_link_libraries(function_test pico_stdlib rgbled pico_display pico_graphics st7789 button)
+
+# create map/bin/hex file etc.
+pico_add_extra_outputs(function_test)
\ No newline at end of file
diff --git a/examples/pico_display/function_test.cpp b/examples/pico_display/function_test.cpp
new file mode 100644
index 00000000..bb43728b
--- /dev/null
+++ b/examples/pico_display/function_test.cpp
@@ -0,0 +1,81 @@
+#include "pico/stdlib.h"
+#include "pico_display.hpp"
+#include "drivers/st7789/st7789.hpp"
+#include "libraries/pico_graphics/pico_graphics.hpp"
+#include "rgbled.hpp"
+#include "button.hpp"
+
+using namespace pimoroni;
+
+ST7789 st7789(PicoDisplay::WIDTH, PicoDisplay::HEIGHT, ROTATE_0, false, get_spi_pins(BG_SPI_FRONT));
+PicoGraphics_PenRGB332 graphics(st7789.width, st7789.height, nullptr);
+
+RGBLED led(PicoDisplay::LED_R, PicoDisplay::LED_G, PicoDisplay::LED_B);
+
+int main() {
+
+    // Set the backlight!
+    st7789.set_backlight(255);
+
+    // Pens
+    Pen BLACK = graphics.create_pen(0, 0, 0);
+    Pen GREEN = graphics.create_pen(0, 255, 0);
+    Pen BLUE = graphics.create_pen(0, 0, 255);
+    Pen RED = graphics.create_pen(255, 0, 0);
+    Pen WHITE = graphics.create_pen(255, 255, 255);
+
+    // Buttons
+    Button button_a(12);
+    Button button_b(13);
+    Button button_x(14);
+    Button button_y(15);
+
+    // Title Screen
+    graphics.set_pen(WHITE);
+    graphics.clear();
+    graphics.set_pen(BLACK);
+    graphics.text("Pico Display Test", Point(10, 50), 4);
+
+
+    // Checks buttons and updates screen
+    while(true) {
+
+        if(button_a.read()) {
+            graphics.set_pen(GREEN);
+            graphics.clear();
+            graphics.set_pen(WHITE);
+            graphics.character('A', Point(100, 50), 8);
+            led.set_rgb(0, 255, 0);
+        }
+
+        if(button_b.read()) {
+            graphics.set_pen(BLUE);
+            graphics.clear();
+            graphics.set_pen(WHITE);
+            graphics.character('B', Point(100, 50), 8);
+            led.set_rgb(0, 0, 255);
+        }
+
+        if(button_x.read()) {
+            graphics.set_pen(WHITE);
+            graphics.clear();
+            graphics.set_pen(BLACK);
+            graphics.character('X', Point(100, 50), 8);
+            led.set_rgb(255,255,255);
+        }
+
+        if(button_y.read()) {
+            graphics.set_pen(RED);
+            graphics.clear();
+            graphics.set_pen(WHITE);
+            graphics.character('Y', Point(100, 50), 8);
+            led.set_rgb(255, 0, 0);
+        }
+
+
+        st7789.update(&graphics);
+
+    }
+
+        return 0;
+}
\ No newline at end of file
diff --git a/examples/pico_display/pico_display_demo.cmake b/examples/pico_display/pico_display_demo.cmake
new file mode 100644
index 00000000..d6f1847a
--- /dev/null
+++ b/examples/pico_display/pico_display_demo.cmake
@@ -0,0 +1,11 @@
+add_executable(
+  pico_display_demo
+  pico_display_demo.cpp
+  image_data.cpp
+)
+
+# Pull in pico libraries that we need
+target_link_libraries(pico_display_demo pico_stdlib hardware_spi hardware_pwm hardware_dma rgbled pico_display pico_graphics st7789)
+
+# create map/bin/hex file etc.
+pico_add_extra_outputs(pico_display_demo)
\ No newline at end of file