Advantage of this sensor is fast and easy installing by the non qualified personal. The sensor is designed for large agriculture facility with many greenhouses where is needed to be controlled temperature and humidity, the atmospheric pressure is for control the motor of air inlet and outlet. With help of the sensor installed outside the greenhouse provide information about positive/negative pressure inside the greenhouse.
Finlay the software read accurate temp/humid value of the Si7021, and only atmospheric pressure of BMP180, the temperature sensor inside the BMP180 is used only by the sensor itself to provide accurate atmospheric pressure measurements.
The sensor can be used also for home automation, and drone applications where is needed correction of the UAV barometric sensor compared to the ground barometric sensor, also humidity measurement can help the pilot to calculate more accurate flying time.
Still, there seems to be 'someting rotten in the state of Network' where my LAN is concerned. Although the Arduino serial monitor says:
13:03:55.821 -> connected with XXX, channel 6
13:03:55.868 -> ip:192.168.178.4,mask:255.255.255.0,gw:192.168.178.1
13:03:55.915 -> ip:192.168.178.4,mask:255.255.255.0,gw:192.168.178.1
13:04:04.826 -> pm open,type:2 0
when I ping the IP-address I get:
Pinging 192.168.178.4 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.178.4:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
When I use the tool 'Wireless Network Watcher' I do see that a device is connected at 192.168.178.4 with the correct MAC address.
However, when I look at the management page of my FritzBox 7490 modem/router no device is mentioned at 192.168.178.4.
I remain at a loss here.
@JahFyahh - I still haven't managed to et round to it. I've been really busy since this project and its still hectic here. I'm sure i read a few reviews somewhere, here or google. Not sure.
I see a lot of "!TSF" and "NACK" which seems to be radio communication problems.
That's MySensors related and can be related to many things, from soldering problem to power / capacitor issues.
In MY_DEBUG mode you should see your temp/hum printed on serial every ~15s so there is something wrong there, either wiring or a code issue.
Ty with the example included with the library "i2c_SI7021.h", without any MySensors related stuff, to see if your sensor is detected. You should see temp/hum on the serial.
Thanks again, learned a lot... I decide to give a try there, I also had a look on some components' datasheet and seems to be what I need... Let's see, if end up getting the boards I'll publish a review here later.
