@emc2 Thanks! With this modification the sketch compiled successfully. Today I had time, so put everything together, and the BME280 works with the 2.4GH radio, temp/hum/pressure all reporting like they should.
Using arduino pro mini, bme280, nrf24, 2XAA Batteries. It reports to the mysensors serial gw, and then shown in domoticz.
I was able to do a photo, so the dallas temp, and le33 "mask" is on the opposite side, I think this is the problem. (in your example pictures they are on the good side)
No worries, I use currently the newbie pcbs for light switching,
Thanks Guys, finally a sketch which compiled for me 
I will try it in Domoticz later on.
@mfalkvidd good question, yes I have removed the two leds I found, but I am too lame to remove the voltage regulator 
I have read here that the most consuming part is the LED(s)
@mrhutchinsonmn have you managed to get your node working under HA? I would migrate from Domoticz to HA, but I have never saw any working sketch 
(I use relay switch, some temp+hum, light level measure)
I was able to do a photo, so the dallas temp, and le33 "mask" is on the opposite side, I think this is the problem. (in your example pictures they are on the good side)
No worries, I use currently the newbie pcbs for light switching,
Just FYI: I have ordered 20pcb in January, and even though they are 4.1rev (pcbway), the le33a voltage regulator's silk screen still points to the wrong direction (flat side outwards). Also the second picture here mentions 4.1 rev, but I think this is an older rev. flat side outwards will connect the le33a Vin 5V leg to the Vin for the NRF2.4 in the 4.1 rev. Or the other way is that the orientation is good, but then it should be on the other side of the board So if it would be on the same side like the capacitors, it would be ok. (I have realized this after the third node built up wrongly.. )
Do you know if the le33a gets 5V to the 3v3 leg, will it survive? Other components?
Thanks Guys, finally a sketch which compiled for me I will try it in Domoticz later on.
Hi, some -maybe- silly questions:
In the diagram you marked MysX connector number 9 as the "LED1", but that's the A5, and not the D3 where I see it is connected. (just asking this to be sure that I understand right the board, and the diagram)
So this is only a typo, right?
Other question is that I can use the mysensors LED dimmer example sketch with the rotary encoder with this board, right? It needs 4 digital pins, and MysX has 4: "D2, D3, D5, D6".
So I just have to replace in the sketch the #define KNOB_ENC_PIN_1 4 to #define KNOB_ENC_PIN_1 2?
"#define LED_PIN 3 // Arduino pin attached to MOSFET Gate pin
#define KNOB_ENC_PIN_1 4 // Rotary encoder input pin 1
#define KNOB_ENC_PIN_2 5 // Rotary encoder input pin 2
#define KNOB_BUTTON_PIN 6 // Rotary encoder button pin"
@maghac A friend just showed me your 1.8 version sketch, and for me so far this is the best working sketch even though I have one issue under Domoticz. (setup: raspberry with mysensors 2 serial gateway, node is arduino pro mini, and 4 mosfet, right now only on breadborad. )
So I can't control the white and the RGB leds independently. If I adjust the brightness for the W-led, like raise up, the RGB leds will lower their brightness in the same ammount. Same for the RGB, if I raise up the RGB brightness, the W led lowers itself.
Also the turn on/off seems to be strange if I want to turn on/off the RGB and W independently.
Are these features, or bugs width Domoticz?
I assumed that I will be able to control independently the W and the RGB channel, in domoticz I have two device, one RGB light device, and one White lamp device.
Can you please help, if all ok with this behaviour, or something needs to be adjusted for Domoticz in the sketch?
Thanks,
Yoshi
@mfalkvidd good question, yes I have removed the two leds I found, but I am too lame to remove the voltage regulator I have read here that the most consuming part is the LED(s)
@bluezr1 Interesting... I used it with a pro mini as well, and my problem was that it ate up the batteries in 2 weeks... So I would need more deep sleep for the same sketch
But for that 2 weeks, it was working well. Temp/Hum/Baro updated every minute.
Zbigniew Ko:
(2.1.1 mysensors compatible, but first you need to install the BME280_MOD-1022.h library in arduino IDE)
/**
* 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) 2013-2015 Sensnology AB
* Full contributor list: https://github.com/mysensors/Arduino/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 - Henrik Ekblad
*
* DESCRIPTION
* Pressure sensor example using BMP085 module
* http://www.mysensors.org/build/pressure
*
*/
// Enable debug prints to serial monitor
#define MY_DEBUG
// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
#include <SPI.h>
#include <MySensors.h>
#include <Wire.h>
// BME280 libraries and variables
// Bosch BME280 Embedded Adventures MOD-1022 weather multi-sensor Arduino code
// Written originally by Embedded Adventures
// https://github.com/embeddedadventures/BME280
#include <BME280_MOD-1022.h>
#define BARO_CHILD 0
#define TEMP_CHILD 1
#define HUM_CHILD 2
const float ALTITUDE = 184; // <-- adapt this value to your location's altitude (in m). Use your smartphone GPS to get an accurate value!
// Sleep time between reads (in ms). Do not change this value as the forecast algorithm needs a sample every minute.
const unsigned long SLEEP_TIME = 60000;
const char *weather[] = { "stable", "sunny", "cloudy", "unstable", "thunderstorm", "unknown" };
enum FORECAST
{
STABLE = 0, // "Stable Weather Pattern"
SUNNY = 1, // "Slowly rising Good Weather", "Clear/Sunny "
CLOUDY = 2, // "Slowly falling L-Pressure ", "Cloudy/Rain "
UNSTABLE = 3, // "Quickly rising H-Press", "Not Stable"
THUNDERSTORM = 4, // "Quickly falling L-Press", "Thunderstorm"
UNKNOWN = 5 // "Unknown (More Time needed)
};
float lastPressure = -1;
float lastTemp = -1;
float lastHum = -1;
int lastForecast = -1;
const int LAST_SAMPLES_COUNT = 5;
float lastPressureSamples[LAST_SAMPLES_COUNT];
// this CONVERSION_FACTOR is used to convert from Pa to kPa in the forecast algorithm
// get kPa/h by dividing hPa by 10
#define CONVERSION_FACTOR (1.0/10.0)
int minuteCount = 0;
bool firstRound = true;
// average value is used in forecast algorithm.
float pressureAvg;
// average after 2 hours is used as reference value for the next iteration.
float pressureAvg2;
float dP_dt;
boolean metric;
MyMessage tempMsg(TEMP_CHILD, V_TEMP);
MyMessage humMsg(HUM_CHILD, V_HUM);
MyMessage pressureMsg(BARO_CHILD, V_PRESSURE);
MyMessage forecastMsg(BARO_CHILD, V_FORECAST);
float getLastPressureSamplesAverage()
{
float lastPressureSamplesAverage = 0;
for (int i = 0; i < LAST_SAMPLES_COUNT; i++)
{
lastPressureSamplesAverage += lastPressureSamples[i];
}
lastPressureSamplesAverage /= LAST_SAMPLES_COUNT;
return lastPressureSamplesAverage;
}
// Algorithm found here
// http://www.freescale.com/files/sensors/doc/app_note/AN3914.pdf
// Pressure in hPa --> forecast done by calculating kPa/h
int sample(float pressure)
{
// Calculate the average of the last n minutes.
int index = minuteCount % LAST_SAMPLES_COUNT;
lastPressureSamples[index] = pressure;
minuteCount++;
if (minuteCount > 185)
{
minuteCount = 6;
}
if (minuteCount == 5)
{
pressureAvg = getLastPressureSamplesAverage();
}
else if (minuteCount == 35)
{
float lastPressureAvg = getLastPressureSamplesAverage();
float change = (lastPressureAvg - pressureAvg) * CONVERSION_FACTOR;
if (firstRound) // first time initial 3 hour
{
dP_dt = change * 2; // note this is for t = 0.5hour
}
else
{
dP_dt = change / 1.5; // divide by 1.5 as this is the difference in time from 0 value.
}
}
else if (minuteCount == 65)
{
float lastPressureAvg = getLastPressureSamplesAverage();
float change = (lastPressureAvg - pressureAvg) * CONVERSION_FACTOR;
if (firstRound) //first time initial 3 hour
{
dP_dt = change; //note this is for t = 1 hour
}
else
{
dP_dt = change / 2; //divide by 2 as this is the difference in time from 0 value
}
}
else if (minuteCount == 95)
{
float lastPressureAvg = getLastPressureSamplesAverage();
float change = (lastPressureAvg - pressureAvg) * CONVERSION_FACTOR;
if (firstRound) // first time initial 3 hour
{
dP_dt = change / 1.5; // note this is for t = 1.5 hour
}
else
{
dP_dt = change / 2.5; // divide by 2.5 as this is the difference in time from 0 value
}
}
else if (minuteCount == 125)
{
float lastPressureAvg = getLastPressureSamplesAverage();
pressureAvg2 = lastPressureAvg; // store for later use.
float change = (lastPressureAvg - pressureAvg) * CONVERSION_FACTOR;
if (firstRound) // first time initial 3 hour
{
dP_dt = change / 2; // note this is for t = 2 hour
}
else
{
dP_dt = change / 3; // divide by 3 as this is the difference in time from 0 value
}
}
else if (minuteCount == 155)
{
float lastPressureAvg = getLastPressureSamplesAverage();
float change = (lastPressureAvg - pressureAvg) * CONVERSION_FACTOR;
if (firstRound) // first time initial 3 hour
{
dP_dt = change / 2.5; // note this is for t = 2.5 hour
}
else
{
dP_dt = change / 3.5; // divide by 3.5 as this is the difference in time from 0 value
}
}
else if (minuteCount == 185)
{
float lastPressureAvg = getLastPressureSamplesAverage();
float change = (lastPressureAvg - pressureAvg) * CONVERSION_FACTOR;
if (firstRound) // first time initial 3 hour
{
dP_dt = change / 3; // note this is for t = 3 hour
}
else
{
dP_dt = change / 4; // divide by 4 as this is the difference in time from 0 value
}
pressureAvg = pressureAvg2; // Equating the pressure at 0 to the pressure at 2 hour after 3 hours have past.
firstRound = false; // flag to let you know that this is on the past 3 hour mark. Initialized to 0 outside main loop.
}
int forecast = UNKNOWN;
if (minuteCount < 35 && firstRound) //if time is less than 35 min on the first 3 hour interval.
{
forecast = UNKNOWN;
}
else if (dP_dt < (-0.25))
{
forecast = THUNDERSTORM;
}
else if (dP_dt > 0.25)
{
forecast = UNSTABLE;
}
else if ((dP_dt > (-0.25)) && (dP_dt < (-0.05)))
{
forecast = CLOUDY;
}
else if ((dP_dt > 0.05) && (dP_dt < 0.25))
{
forecast = SUNNY;
}
else if ((dP_dt >(-0.05)) && (dP_dt < 0.05))
{
forecast = STABLE;
}
else
{
forecast = UNKNOWN;
}
// uncomment when debugging
//Serial.print(F("Forecast at minute "));
//Serial.print(minuteCount);
//Serial.print(F(" dP/dt = "));
//Serial.print(dP_dt);
//Serial.print(F("kPa/h --> "));
//Serial.println(weather[forecast]);
return forecast;
}
void setup() {
metric = getControllerConfig().isMetric; // was getConfig().isMetric; before MySensors v2.1.1
Wire.begin(); // Wire.begin(sda, scl)
}
void presentation() {
// Send the sketch version information to the gateway and Controller
sendSketchInfo("BME280 Sensor", "1.6");
// Register sensors to gw (they will be created as child devices)
present(BARO_CHILD, S_BARO);
present(TEMP_CHILD, S_TEMP);
present(HUM_CHILD, S_HUM);
}
// Loop
void loop() {
// need to read the NVM compensation parameters
BME280.readCompensationParams();
/* After taking the measurement the chip goes back to sleep, use when battery powered.
// Oversampling settings (os1x, os2x, os4x, os8x or os16x).
BME280.writeFilterCoefficient(fc_16); // IIR Filter coefficient, higher numbers avoid sudden changes to be accounted for (such as slamming a door)
BME280.writeOversamplingPressure(os16x); // pressure x16
BME280.writeOversamplingTemperature(os8x); // temperature x8
BME280.writeOversamplingHumidity(os8x); // humidity x8
BME280.writeMode(smForced); // Forced sample. After taking the measurement the chip goes back to sleep
*/
// Normal mode for regular automatic samples
BME280.writeStandbyTime(tsb_0p5ms); // tsb = 0.5ms
BME280.writeFilterCoefficient(fc_16); // IIR Filter coefficient 16
BME280.writeOversamplingPressure(os16x); // pressure x16
BME280.writeOversamplingTemperature(os8x); // temperature x8
BME280.writeOversamplingHumidity(os8x); // humidity x8
BME280.writeMode(smNormal);
while (1) {
// Just to be sure, wait until sensor is done mesuring
while (BME280.isMeasuring()) {
}
// Read out the data - must do this before calling the getxxxxx routines
BME280.readMeasurements();
float temperature = BME280.getTemperatureMostAccurate(); // must get temp first
float humidity = BME280.getHumidityMostAccurate();
float pressure_local = BME280.getPressureMostAccurate(); // Get pressure at current location
float pressure = pressure_local/pow((1.0 - ( ALTITUDE / 44330.0 )), 5.255); // Adjust to sea level pressure using user altitude
int forecast = sample(pressure);
if (!metric)
{
// Convert to fahrenheit
temperature = temperature * 9.0 / 5.0 + 32.0;
}
Serial.println();
Serial.print("Temperature = ");
Serial.print(temperature);
Serial.println(metric ? " °C" : " °F");
Serial.print("Humidity = ");
Serial.print(humidity);
Serial.println(" %");
Serial.print("Pressure = ");
Serial.print(pressure);
Serial.println(" hPa");
Serial.print("Forecast = ");
Serial.println(weather[forecast]);
Serial.println();
if (temperature != lastTemp)
{
send(tempMsg.set(temperature, 1));
lastTemp = temperature;
}
if (humidity != lastHum)
{
send(humMsg.set(humidity, 1));
lastHum = humidity;
}
if (pressure != lastPressure)
{
send(pressureMsg.set(pressure, 2));
lastPressure = pressure;
}
if (forecast != lastForecast)
{
send(forecastMsg.set(weather[forecast]));
lastForecast = forecast;
}
sleep(SLEEP_TIME);
}
}