@Dwalt
actually the sketch is simple.
#include <SPI.h>
#include <MySensor.h>
#include <DHT.h>
#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_LIGHT 2
#define HUMIDITY_SENSOR_DIGITAL_PIN 4
#define BATTERY_SENSE_PIN A0 // select the input pin for the battery sense point
#define LIGHT_SENSOR_ANALOG_PIN A1
unsigned long SLEEP_TIME = 60000; // Sleep time between reads (in milliseconds)
MySensor gw;
DHT dht;
float lastTemp;
float lastHum;
boolean metric = true;
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
int oldBatteryPcnt = 0;
int battLoop =0;
int lightLevel =0;
int lastLightLevel =0;
void setup()
{
gw.begin(NULL,15);
dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN);
// Send the Sketch Version Information to the Gateway
gw.sendSketchInfo("Temp Humidity Light", "1.0");
// Register all sensors to gw (they will be created as child devices)
gw.present(CHILD_ID_HUM, S_HUM);
gw.present(CHILD_ID_TEMP, S_TEMP);
gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
metric = gw.getConfig().isMetric;
check_batt();
}
void loop()
{
delay(dht.getMinimumSamplingPeriod());
float temperature = dht.getTemperature();
if (isnan(temperature)) {
Serial.println("Failed reading temperature from DHT");
} else if (temperature != lastTemp) {
lastTemp = temperature;
if (!metric) {
temperature = dht.toFahrenheit(temperature);
}
gw.send(msgTemp.set(temperature, 1));
Serial.print("T: ");
Serial.println(temperature);
}
float humidity = dht.getHumidity();
if (isnan(humidity)) {
Serial.println("Failed reading humidity from DHT");
} else if (humidity != lastHum) {
lastHum = humidity;
gw.send(msgHum.set(humidity, 1));
Serial.print("H: ");
Serial.println(humidity);
}
lightLevel = (analogRead(LIGHT_SENSOR_ANALOG_PIN))/10.23;
if (lightLevel != lastLightLevel) {
Serial.println(lightLevel);
gw.send(msg.set(lightLevel));
lastLightLevel = lightLevel;
}
battLoop++;
if (battLoop > 10)
{
check_batt();
battLoop=0;
}
gw.sleep(SLEEP_TIME); //sleep a bit
}
void check_batt()
{
// get the battery Voltage
int sensorValue = analogRead(BATTERY_SENSE_PIN);
Serial.println(sensorValue);
// 1M, 470K divider across battery and using internal ADC ref of 1.1V
// Sense point is bypassed with 0.1 uF cap to reduce noise at that point
// ((1e6+470e3)/470e3)*1.1 = Vmax = 3.44 Volts
// 3.44/1023 = Volts per bit = 0.003363075
// vout = (sensorvalue x 3.3) / 1023
//vin = vout / (R2/(R1+R2));
float batteryV = ( sensorValue * 0.003225806 ) / 0.3; // divide R2/(R1+R2)
int batteryPcnt = sensorValue / 10 ;
if ( batteryPcnt > 100 )
batteryPcnt = 100;
Serial.print("Battery Voltage: ");
Serial.print(batteryV);
Serial.println(" V");
Serial.print("Battery percent: ");
Serial.print(batteryPcnt);
Serial.println(" %");
if (oldBatteryPcnt != batteryPcnt)
{
// Power up radio after sleep
gw.sendBatteryLevel(batteryPcnt);
oldBatteryPcnt = batteryPcnt;
}
}
//```
