 		
 		// Compute the mean.
 		uint16_t iMean  = (iSample1 + iSample2) * 0.5;
+		valueVariance->push( iMean );
 		
 		// Start this frame by assuming we are not on the screen.
 		bOnScreen = false;
 		
 		// If the LDRs are sensing the same thing, we are probably on the screen.
-		boolean bDelta_Suggest = iDelta <= LDR_OFFSCREEN_DELTA_GAP;
+		#ifdef HEIGHT_DELTA_CHECK
+			boolean bDelta_Suggest = iDelta <= LDR_OFFSCREEN_DELTA_GAP;
+		#else
+			boolean bDelta_Suggest = true;
+		#endif
 		if (bDelta_Suggest)
 		{
 			// Update the ranges.

				{
					// Set the flag and update the motor height.
					bOnScreen = true;
					iTargetPos = constrain(map(iMean, min, max, 0, MOTOR_TRAVEL), 0, MOTOR_TRAVEL);
				}
				else
				{

	Serial.begin(115200);
	
	// Wait two seconds.
	Serial.println("Boot v2.5");
	
	// Select a default clip mode from the set of possible modes, if one is not set.
	eClipMode = EEPROM.read(EEMODEADDR);
