diff --git a/keyboards/scda/promicro_trackball/config.h b/keyboards/scda/promicro_trackball/config.h
index 48438e6adf6..707535f215a 100644
--- a/keyboards/scda/promicro_trackball/config.h
+++ b/keyboards/scda/promicro_trackball/config.h
@@ -19,6 +19,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define POINTING_DEVICE_ROTATION_90
 
+#define POINTING_DEVICE_INVERT_Y // remove for normal pointer usage
+#define PIMORONI_TRACKBALL_SCALE 1  // default 5
+
 #ifndef PIMORONI_TRACKBALL_ADDRESS
 #    define PIMORONI_TRACKBALL_ADDRESS 0x0A
 #endif
diff --git a/keyboards/scda/promicro_trackball/keymaps/default/keymap.c b/keyboards/scda/promicro_trackball/keymaps/default/keymap.c
index ad369c58367..717e7fbc6c1 100644
--- a/keyboards/scda/promicro_trackball/keymaps/default/keymap.c
+++ b/keyboards/scda/promicro_trackball/keymaps/default/keymap.c
@@ -1,12 +1,36 @@
 #include QMK_KEYBOARD_H
 
 bool set_scrolling = true;
+
+// Modify these values to adjust the scrolling speed
+#define SCROLL_DIVISOR_H 2.0
+#define SCROLL_DIVISOR_V 2.0
+
+// Variables to store accumulated scroll values
+float scroll_accumulated_h = 0;
+float scroll_accumulated_v = 0;
+
+// Function to handle mouse reports and perform (smoothed) drag scrolling
 report_mouse_t pointing_device_task_user(report_mouse_t mouse_report) {
-    if (set_scrolling) {
-        mouse_report.h = mouse_report.x;
-        mouse_report.v = mouse_report.y;
-        mouse_report.x = mouse_report.y = 0;
+    if (!set_scrolling){
+        return mouse_report;
     }
+
+    // Calculate and accumulate scroll values based on mouse movement and divisors
+    scroll_accumulated_h += (float)mouse_report.x / SCROLL_DIVISOR_H;
+    scroll_accumulated_v += (float)mouse_report.y / SCROLL_DIVISOR_V;
+
+    // Assign integer parts of accumulated scroll values to the mouse report
+    mouse_report.h = (int8_t)scroll_accumulated_h;
+    mouse_report.v = (int8_t)scroll_accumulated_v;
+
+    // Update accumulated scroll values by subtracting the integer parts
+    scroll_accumulated_h -= (int8_t)scroll_accumulated_h;
+    scroll_accumulated_v -= (int8_t)scroll_accumulated_v;
+
+    // Clear the X and Y values of the mouse report
+    mouse_report.x = mouse_report.y = 0;
+
     return mouse_report;
 }