Bonjour à tous.
J'ai installé une sonde uv (guva s125d) sur un Arduino pro-mini qui envoi les valeur sur Domoticz.
Quand la sonde est a l’intérieur la valeur est bien à zéro, par contre quand je suis dehors et qu'il y a du soleil, même voilé, la sonde grimpe rapidement vers des valeurs maxi, ce qui laisse supposer qui si un jour il fait grand soleil (ça va bien arriver) je serais hors échelle.
Elle est alimenté en 3.5 volts, dans l'exemple d'Henri elle est en 5 volts.
La tension d'alimentation peut jouer sur la valeur des data ? Il faudrait rajouter une résistance ?
Merci.
/*
* The MySensors Arduino library handles the wireless radio link and protocol
* between your home built sensors/actuators and HA controller of choice.
* The sensors forms a self healing radio network with optional repeaters. Each
* repeater and gateway builds a routing tables in EEPROM which keeps track of the
* network topology allowing messages to be routed to nodes.
*
* Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
* Copyright (C) 2013-2019 Sensnology AB
* Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors
*
* Documentation: http://www.mysensors.org
* Support Forum: http://forum.mysensors.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
*******************************
*
* REVISION HISTORY
* Version 1.0 - epierre
* Contribution: bulldoglowell, gizmocuz
*
* DESCRIPTION
* Arduino UVM-30A
* Index table taken from: http://www.elecrow.com/sensors-c-111/environment-c-111_112/uv-sensor-moduleuvm30a-p-716.html
* Because this table is pretty lineair, we can calculate a UVI with one decimal
*
* Connect sensor:
*
* + >>> 5V
* - >>> GND
* out >>> A0
*
* License: Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)
*/
// Enable debug prints to serial monitor
#define MY_DEBUG
// Enable and select radio type attached
#define MY_RADIO_RF24
//#define MY_RADIO_NRF5_ESB
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95
#include <MySensors.h>
#define UV_SENSOR_ANALOG_PIN 0
#define CHILD_ID_UV 0
uint32_t SLEEP_TIME = 30*1000; // Sleep time between reads (in milliseconds)
MyMessage uvMsg(CHILD_ID_UV, V_UV);
uint32_t lastSend =0;
float uvIndex;
float lastUV = -1;
uint16_t uvIndexValue [12] = { 50, 227, 318, 408, 503, 606, 696, 795, 881, 976, 1079, 1170};
void presentation()
{
// Send the sketch version information to the gateway and Controller
sendSketchInfo("UV Sensor", "1.2");
// Register all sensors to gateway (they will be created as child devices)
present(CHILD_ID_UV, S_UV);
}
void loop()
{
uint32_t currentTime = millis();
uint16_t uv = analogRead(UV_SENSOR_ANALOG_PIN);// Get UV value
if (uv>1170) {
uv=1170;
}
//Serial.print("UV Analog reading: ");
//Serial.println(uv);
int i;
for (i = 0; i < 12; i++) {
if (uv <= uvIndexValue[i]) {
uvIndex = i;
break;
}
}
//calculate 1 decimal if possible
if (i>0) {
float vRange=uvIndexValue[i]-uvIndexValue[i-1];
float vCalc=uv-uvIndexValue[i-1];
uvIndex+=(1.0/vRange)*vCalc-1.0;
}
//Serial.print("UVI: ");
//Serial.println(uvIndex,2);
//Send value to gateway if changed, or at least every 5 minutes
if ((uvIndex != lastUV)||(currentTime-lastSend >= 5UL*60UL*1000UL)) {
lastSend=currentTime;
send(uvMsg.set(uvIndex,2));
lastUV = uvIndex;
}
sleep(SLEEP_TIME);
}
