diff --git a/Adafruit_RA8875.cpp b/Adafruit_RA8875.cpp
index 68e6782..2af2b4f 100644
--- a/Adafruit_RA8875.cpp
+++ b/Adafruit_RA8875.cpp
@@ -418,12 +418,12 @@ void Adafruit_RA8875::touchEnable(boolean on)
   {
     /* Enable Touch Panel (Reg 0x70) */
     writeReg(RA8875_TPCR0, RA8875_TPCR0_ENABLE        | 
-                           RA8875_TPCR0_WAIT_4096CLK  |
+                           RA8875_TPCR0_WAIT_4096CLK |
                            RA8875_TPCR0_WAKEDISABLE   | 
-                           RA8875_TPCR0_ADCCLK_DIV4); // 10mhz max!
+                           RA8875_TPCR0_ADCCLK_DIV8); // 10mhz max!
     /* Set Auto Mode      (Reg 0x71) */
     writeReg(RA8875_TPCR1, RA8875_TPCR1_AUTO    | 
-                           RA8875_TPCR1_VREFEXT | 
+                        //   RA8875_TPCR1_VREFEXT | 
                            RA8875_TPCR1_DEBOUNCE);
     /* Enable TP INT */
     writeReg(RA8875_INTC1, readReg(RA8875_INTC1) | RA8875_INTC1_TP);
diff --git a/examples/buildtest/buildtest.ino b/examples/buildtest/buildtest.ino
index dddaa02..6a35478 100644
--- a/examples/buildtest/buildtest.ino
+++ b/examples/buildtest/buildtest.ino
@@ -80,11 +80,13 @@ void setup()
   Serial.println("Waiting for touch events ...");
 }
 
+#define XMIN 105
+#define XMAX 975
+#define YMIN 130
+#define YMAX 900
+
 void loop() 
 {
-  float xScale = 1024.0F/tft.width();
-  float yScale = 1024.0F/tft.height();
-
   /* Wait around for touch events */
   if (! digitalRead(RA8875_INT)) 
   {
@@ -94,7 +96,9 @@ void loop()
       tft.touchRead(&tx, &ty);
       Serial.print(tx); Serial.print(", "); Serial.println(ty);
       /* Draw a circle */
-      tft.fillCircle((uint16_t)(tx/xScale), (uint16_t)(ty/yScale), 10, RA8875_WHITE);
+      tx = map(tx, XMIN, XMAX, 0, tft.width());
+      ty = map(ty, YMIN, YMAX, 0, tft.height());
+      tft.fillCircle(tx, ty, 5, RA8875_WHITE);
     } 
   }
-}
+}
\ No newline at end of file