Hi,
Here is a very simple project for measuring temperature and humidity.
We will need one RF USB RF69 Stick and two Temp Humidity Sensor FSK 433MHz RF69 (four AA batteries for Temp Humidity Sensors are required) and we will need to run some code to configure the USB Stick but don’t worry. I’ll explain everything .
Whole data can be sent up to 50 meters and I will read it on my Raspberry Pi3 (I will test it on my Odroid C1+ as well) but you can do it on any Linux PC.
First of all you will need to put some batteries into our sensors and then place them where you wish to measure your humidity and temperature. As you can see on the picture below I have nested my sensors in plastic enclosures.
Next you will need to download this code here: temp_hum_sensor.
If you are using Raspberry Pi then you will need to add additional software to extract it. Go to Menu–>Preferences–>Add/Remove Software and then in search field type in “7zip” and hit enter. Then tick two bottom boxes as per below picture and click Apply.
You will be asked to enter password. By default password is : raspberry.
After adding additional software go to the folder where you have saved your file. Right click on the file will give you two options:
Extract Here or Extract To… Pick the right one for you.
Now insert RF USB RF69 Stick into Raspberry Pi.
Open terminal and go to folder where the file was extracted and execute the file.
If you are not sure how to do that then just folow this step by step below:
and then:
After executing the file you should see the light flashing on RF USB RF69 Stick and start receiving data every five minutes. It should look like on the picture below:
2:21.4C:46.83RH –> Sensor_ID:Temperature:Humidity
Don’t worry if you don’t see data at first because from the time when you entered batteries into Temp Humidity Sensor FSK 433MHz RF69 till executing the code some time has passed. If there is no data received for more than five minutes then check the steps again
And that’s it.
If you need more techie description of the RF USB RF69 Stick then you need to click here and if you need this same on the Temp Humidity Sensor FSK 433MHz RF69 then you need to click here.
Thank you,
Michal
P.S
Range of Temp Humidity Sensor FSK 433MHz RF69 can be extended if required by soldering antenna onto it. Also, like I have mentioned it already, the sensors are preprogrammed to send data every five minutes.This was done to reduce energy consumption so the batteries can last a lot longer. Soon I will update here libs for the sensors so you will be able to set them up to your needs.
This project will evolve as I’m planning to add small screen to my Raspberry Pi3.
And for all more advanced coders you can download source code here: RF69 Sensor and add it to your Arduino libs.