Some people have reported problem when first radio transmit after sleep was send.

Added radio powerUp() in "sleeping" example sketches.

libraries/MySensors/examples/DallasTemperatureSensor/DallasTemperatureSensor.ino

@@ -46,6 +46,7 @@ void setup()
  
 void loop()     
 {     
+  gw.powerUp();
   sensors.requestTemperatures(); // Fetch temperatures from Dallas
   delay(100);
   for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {

libraries/MySensors/examples/DistanceSensor/DistanceSensor.ino

@@ -35,6 +35,7 @@ void setup()
 
 void loop()      
 {     
+  gw.powerUp(); // Power up radio
   int dist = metric?sonar.ping_cm():sonar.ping_in();
 
   Serial.print("Ping: ");

libraries/MySensors/examples/EnergyMeterPulseSensor/EnergyMeterPulseSensor.ino

@@ -60,9 +60,11 @@ void setup()
 
 void loop()     
 { 
-  unsigned long now = millis();
+   unsigned long now = millis();
   // Only send values at a maximum frequency or woken up from sleep
   if (SLEEP_MODE || now - lastSend > 1000*SEND_FREQUENCY) {
+    gw.powerUp(); // Power up radio
+
     // New watt value has been calculated  
     if (!SLEEP_MODE && watt != oldWatt) {
       // Check that we dont get unresonable large watt value. 

libraries/MySensors/examples/HumiditySensor/HumiditySensor.ino

@@ -36,7 +36,8 @@ void setup()
 }
 
 void loop()      
-{     
+{  
+  gw.powerUp(); // Power up radio
   delay(dht.getMinimumSamplingPeriod());
 
   float temperature = dht.getTemperature();

libraries/MySensors/examples/LightSensor/LightSensor.ino

@@ -28,6 +28,8 @@ void setup()
 
 void loop()      
 {     
+  gw.powerUp(); // Power up radio
+
   int lightLevel = (1023-analogRead(LIGHT_SENSOR_ANALOG_PIN))/10.23; 
   Serial.println(lightLevel);
   if (lightLevel != lastLightLevel) {

libraries/MySensors/examples/MotionSensor/MotionSensor.ino

@@ -28,6 +28,7 @@ void setup()
 
 void loop()     
 {     
+  gw.powerUp(); // Power up radio
   // Read digital motion value
   boolean tripped = digitalRead(DIGITAL_INPUT_SENSOR) == HIGH; 
         

libraries/MySensors/examples/PressureSensor/PressureSensor.ino

@@ -47,6 +47,8 @@ void setup() {
 
 
 void loop() {
+  gw.powerUp(); // Power up radio
+
   float pressure = bmp.readPressure();
   float temperature = bmp.readTemperature();
   

libraries/MySensors/examples/SoilMoistSensor/SoilMoistSensor.ino

@@ -30,6 +30,7 @@ int lastSoilValue = -1;
  
 void loop()     
 {     
+  gw.powerUp(); // Power up radio
   // Read digital soil value
   int soilValue = digitalRead(DIGITAL_INPUT_SOIL_SENSOR); // 1 = Not triggered, 0 = In soil with water 
   if (soilValue != lastSoilValue) {

libraries/MySensors/examples/WaterMeterPulseSensor/WaterMeterPulseSensor.ino

@@ -79,6 +79,8 @@ void loop()
 	
     // Only send values at a maximum frequency or woken up from sleep
   if (SLEEP_MODE || currentTime - lastSend > 1000*SEND_FREQUENCY) {
+    gw.powerUp(); // Power up radio
+    
     // New flow value has been calculated  
     if (!SLEEP_MODE && flow != oldflow) {
       // Check that we dont get unresonable large flow value.