reted30
Posts: 25
Joined: Mon Apr 30, 2018 7:24 am

Wireless Sensor module required to interface with Raspberry Pi

Thu Oct 11, 2018 10:41 am

I have worked with DHT11 sensor data but I am looking for the wireless sensor module which are battery powered and using less amount power while fetching the analog data of temperature as well as humidity and at the same time share the sensor data to Azure database also. Any advice will be grateful.

Andyroo

Re: Wireless Sensor module required to interface with Raspberry Pi

Thu Oct 11, 2018 9:42 pm

Tempted to say use an Arduino ESP8266 as it has an ultra low power mode and WiFI built in.

For example https://m.youtube.com/watch?v=TEr-oraSjN0 has over a year on batteries.

As for Azure, I would be tempted to try ODBC - I’ve had some luck with remote connections but lots of fails to MS/SQL and never got to the bottom of how / why it works some days and not others.

To get the data from the 8266 to the Pi you could try MQTT - this may also run on Azure but it always needed a SSL certificate to work and I’m not sure that would work on the Arduino.

A little bit more on your needs / skills may help to get a bit closer to a solution for you :)

PhatFil
Posts: 1700
Joined: Thu Apr 13, 2017 3:55 pm
Location: Oxford UK

Re: Wireless Sensor module required to interface with Raspberry Pi

Thu Oct 11, 2018 11:41 pm

for a relatively cheap and minimal work temperature and humidity sensor check out the xiaomi bluetooth temperature and humidity sensor and use the Pis bluetooth to query it. circa 18months of use from a singe aaa cell ;)

https://zsiti.eu/xiaomi-mijia-hygrother ... pberry-pi/

if using Node Red, the Node-red-contrib-xiaomi-ble node will query/interface with the device given its mac addy.

if determined to hack a solution i would suggest an esp32 module over an esp8266 due to its superior sleeping capacity and lower power use.
tho the wemos-d1 esp8266 and its plug in shields do make it fairly 'lego'

However avoid the dht11 sensors and spend the extra £ to get a dht22, afaik its both more accurate and has a longer operational lifespan.

henmina53
Posts: 20
Joined: Thu Apr 05, 2018 4:49 am

Re: Wireless Sensor module required to interface with Raspberry Pi

Fri Oct 12, 2018 11:46 am

Hello,

The most reliable and for long range sensor module please go through the product manual of wireless temperature sensor https://store.ncd.io/product/industrial ... ty-sensor/. Not only longer range The sensor module can work upto 500,000 transmission. You can communicate the sensor with Raspberry pi through UART communication or via USB any kind of suitable communication you want to use and can share the reading to Azure IOT Hub as per the following instruction mentioned in this link https://docs.microsoft.com/en-us/azure/ ... et-started.

Hope the this kind of sensor as well as data will be sufficient with to connect the sensor module with Azure

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