Anywhere you can connect to another nodes simply. Connect Xbee shield to Raspberry Pi and use ds18b20 sensor to log temperature information.

  1. Firstly, Connect your Raspberry Pi to internet and run sudo apt-get update to update your Raspberry Pi
  2. We should stop getty service on Raspbian.
    1. For non Raspberry Pi 3 machines, remember it’s /dev/ttyAMA0 that is linked to the getty (console) service. So you need to perform this command from a terminal window:
    2. For Raspberry Pi 3’s the command is similar but referencing /dev/ttyS0:
    3. You also need to remove the console from the cmdline.txt. If you edit this with:
      • sudo nano /boot/cmdline.txt


        remove the line: console=serial0,115200 and save and reboot for changes to take effect.
    4. You also need to enable uart with edit /boot/config.txt file
      • sudo nano /boot/config.txt and add enable_uart=1 to bottom of file then save and reboot for changes to take effect.
  3. Edit /boot/config.txt file with nano by running sudo nano /boot/config.txtand add dtoverlay=w1-gpio, save and exit.
  4. Edit /etc/modules file with nano by running sudo nano /etc/modulesand add following text, save and exit.
  5. Download source code
    • wget https://raw.githubusercontent.com/sixfab/rpiShields/master/tutorials/tutorial6/XbeeTemp.py
  6. Make it executable
    • sudo chmod +x XbeeTemp.py
  7. Run it
    • sudo python XbeeTemp.py

 

About hardware:

As you can see from the picture below, the 4.7Kohm resistor required for 1-wire is not installed during electronic assembly. This pin can be used for other purposes or you may want to use it with another shield. We have not been assembled to avoid problems in these situations. If you only plug in a DS18B20  sensor without this resistor, a 4.7 kohm resistor is required. But on some breakout cards with 1-wire communication this resistance is already installed. It is not necessary for breakout.

xbee1wire

9 thoughts on “Tutorial 6 | Raspberry Pi Ds18b20 Temperature Sensor logger with Sixfab Xbee Shield”

  1. Hello,
    I have follow the different steps to run the final script.
    But there is an error when I run the script :
    “Traceback (most recent call last):
    File “XbeeTemp.py”, line 5, in
    device_folder = glob.glob(base_dir + ’10*’)[1]
    IndexError: list index out of range”
    Have you an answer to this issue?
    Best regards,
    Charles

      1. I get the same error and when I run the ls command above I get the following list.

        00-400000000000 00-800000000000 w1_bus_master1

          1. I am having the same issue reported above, specifically what do we need to try in this tutorial? Are we trying to prove 1-wire on the raspberry PI?
            If I issue ls /sys/bus/w1/devices/:
            I get the following response:
            00-300000000000 00-500000000000 00-d00000000000 w1_bus_master1
            This is a brand new install of the raspberry PI.
            Thank you

  2. Hello,
    Your sensor (DS 18B20) is wired and you are connecting it like connecting with GPIO pins. What if we must use wireless sensors or lamps? Do you have a sensor recommendation to use and can you describe how to use with raspberry pi and Xbee?

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