diff --git a/lambda-test/Makefile b/lambda-test/Makefile
index a533629..d5fcefd 100644
--- a/lambda-test/Makefile
+++ b/lambda-test/Makefile
@@ -28,7 +28,7 @@
 
 PROGRAMMER_TYPE = avrisp
 # extra arguments to avrdude: baud rate, chip type, -F flag, etc.
-PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0
+PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM3
 
 ##########------------------------------------------------------##########
 ##########                   Makefile Magic!                    ##########
diff --git a/lambda-test/lambda-test.c b/lambda-test/lambda-test.c
index 7967d0e..70284cf 100644
--- a/lambda-test/lambda-test.c
+++ b/lambda-test/lambda-test.c
@@ -71,7 +71,7 @@
 	setupSleepMode();
 
 	// enable pull-up resistor so the measured voltage
-	// should be (close to?) AREF
+	// should be close to AREF
 	PORTC |= (1 << PC1);
 	// PORTC = 0xff;
 
@@ -158,7 +158,7 @@
 	setupSleepMode();
 
 	// enable pull-up resistor so the measured voltage
-	// should be (close to?) AREF
+	// should be close to AREF
 	PORTC |= ((1 << PC5) | (1 << PC0) | (1 << PC2));
 
 	_delay_ms(10);
@@ -266,15 +266,25 @@
 }
 
 bool testToInfoLean(void) {
-	const char* info = toInfo(1600);
+	const char* info = toInfo(1901);
 
 	return ! strcmp(info, LEAN);
 }
 
-bool testToInfoIdeal(void) {
-	const char* info = toInfo(1400);
+bool testToInfoOkay(void) {
+	assertTrue(0 == strcmp(toInfo(1900), OKAY));
+	assertTrue(0 == strcmp(toInfo(1700), OKAY));
+	assertTrue(0 == strcmp(toInfo(1501), OKAY));
 
-	return ! strcmp(info, IDEAL);
+	return true;
+}
+
+bool testToInfoIdeal(void) {
+	assertTrue(0 == strcmp(toInfo(1500), IDEAL));
+	assertTrue(0 == strcmp(toInfo(1400), IDEAL));
+	assertTrue(0 == strcmp(toInfo(1300), IDEAL));
+
+	return true;
 }
 
 bool testToInfoRich(void) {
@@ -310,6 +320,7 @@
 		{"sensors", "testLookupLinInterBelow", testLookupLinInterBelow},
 		{"sensors", "testLookupLinInterAbove", testLookupLinInterAbove},
 		{"sensors", "testToInfoLean", testToInfoLean},
+		{"sensors", "testToInfoOkay", testToInfoOkay},
 		{"sensors", "testToInfoIdeal", testToInfoIdeal},
 		{"sensors", "testToInfoRich", testToInfoRich}
 };
diff --git a/lambda/sensors.c b/lambda/sensors.c
index 66ab571..0b0696b 100644
--- a/lambda/sensors.c
+++ b/lambda/sensors.c
@@ -79,15 +79,6 @@
 	int32_t lambdaVoltage = divRoundNearest(getVoltage(PC2), 11);
 	lambdaVoltageAvg = average((lambdaVoltage << 4), lambdaVoltageAvg, 4);
 
-	// TODO just for testing, remove at some point
-	char log[64];
-	snprintf(log, sizeof(log),
-			"Ti %3d C %4ld - To %3d C %4ld - L       %4ld\r\n",
-			toTempI(tempIVoltage), tempIVoltage,
-			toTempO(tempOVoltage), tempOVoltage,
-			lambdaVoltage);
-	// printString(log);
-
 	measurement meas;
 	meas.tempIVoltage = divRoundNearest(tempIVoltageAvg, 16);
 	meas.tempOVoltage = divRoundNearest(tempOVoltageAvg, 16);
@@ -101,19 +92,20 @@
 }
 
 void display(measurement meas) {
-	div_t lambdaT = div(meas.lambda, 1000);
+	uint8_t lambdax10 = divRoundNearest(meas.lambda, 100);
+	div_t lambdaT = div(lambdax10, 10);
 
 	char log[64];
 	snprintf(log, sizeof(log),
-			"Ti %3d C %4d - To %3d C %4d - L %d.%03d %4d\r\n",
+			"Ti %3d C %4d - To %3d C %4d - L %4d %4d\r\n",
 			meas.tempI, meas.tempIVoltage, meas.tempO, meas.tempOVoltage,
-			lambdaT.quot, abs(lambdaT.rem), meas.lambdaVoltage);
+			meas.lambda, meas.lambdaVoltage);
 	printString(log);
 
 	char line0[17];
 	char line1[17];
 	snprintf(line0, sizeof(line0), "Ti %3dC To %3dC ", meas.tempI, meas.tempO);
-	snprintf(line1, sizeof(line1), "L %d.%03d %s    ",
+	snprintf(line1, sizeof(line1), "L   %d.%01d %s   ",
 			lambdaT.quot, abs(lambdaT.rem), toInfo(meas.lambda));
 	lcd_setcursor(0, 1);
 	lcd_string(line0);
@@ -168,9 +160,11 @@
 }
 
 const char* toInfo(int16_t lambda) {
-	if (lambda > 1500) {
+	if (lambda > 1900) {
 		return LEAN;
-	} else if (lambda > 1300 && lambda <= 1500) {
+	} else if (lambda > 1500 && lambda <= 1900) {
+		return OKAY;
+	} else if (lambda >= 1300 && lambda <= 1500) {
 		return IDEAL;
 	} else {
 		return RICH;
diff --git a/lambda/sensors.h b/lambda/sensors.h
index 6aed6e2..cd44d69 100644
--- a/lambda/sensors.h
+++ b/lambda/sensors.h
@@ -14,6 +14,7 @@
 
 // TODO put in Makefile?
 #define LEAN "Mager"
+#define OKAY "Okay "
 #define IDEAL "Ideal"
 #define RICH "Fett!"