Dear all,
I want to send the DHT to HA via USB connection between Arduino and RPI. I looked and searched on this forum and I figured out that I need to use mysensor. So this is what I have as arduino script /
#include <SPI.h>
#include <MySensor.h>
#include <DHT.h>
#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define HUMIDITY_SENSOR_DIGITAL_PIN 3
unsigned long SLEEP_TIME = 30000; // 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);
void setup()
{
gw.begin();
dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN);
// Send the Sketch Version Information to the Gateway
gw.sendSketchInfo("Humidity", "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);
metric = gw.getConfig().isMetric;
}
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);
}
gw.sleep(SLEEP_TIME); //sleep a bit
}
and this is my config in yaml:
mysensors:
gateways:
- device: /dev/ttyACM0
persistence_file: /var/opt/homeassistant/sensor/mysensors2.json
baud_rate: 115200
debug: true
optimistic: false
persistence: true
retain: true
version: 2.0
But or I do something wrong most likely or I forget something because I don’t see any values on the serial monitor of the arduino and on HA. I installed the libraries and copied the DHT22 script from the mysensor website so far no own input :).
Is there anyone who could help me with this issue and I don’t want to use ESP8266 because I prefer the more difficult way and also more inputs are connected to the arduino and I have 4 USB on the PI.