After my first experiments with 2elemtry, I decided to give MOSQUITTO a try. Mosquitto is a small MQTT message broker, which provides basically the same functionality like 2lemetry.

Here the steps, I got Mosquitto up und running on my Windows 8 machine:

  • Install Mosquitto from the website. To avoid any security issues I installed it in the directory c:\mosquitto
  • Edit the existing configuration file mosquitto.conf. Uncomment the following parameters and change them

port 1883
password_file c:/mosquitto/pwfile
allow_anonymous false

  • Open a command prompt (cmd.exe) and navigate to c:\mosquitto
  • Create a new password file for the new user dl2sba using this command mosquitto_passwd.exe -c pwfile XXXXXX. Enter the password YYYYYY twice.
  • Be sure to enable the windows firewall to let external applications access mosquitto.exe.
  • Start mosquitto in the command window with mosquitto.exe -v -c mosquitto.conf
  • Now you should see some initial output:

C:\mosquitto>mosquitto.exe -v -c mosquitto.conf
1400926309: mosquitto version 1.2.3 (build date 22/12/2013 13:36:32.54) starting
1400926309: Config loaded from mosquitto.conf.
400926309: Opening ipv4 listen socket on port 1883.

  •  Open another command window an start the provided subscribe-client of mosquitto

C:\mosquitto>mosquitto_sub.exe -t -h -d -v -u XXXXXX -P YYYYYY
Client mosqsub/5916-DL2SBA-5 sending CONNECT
Client mosqsub/5916-DL2SBA-5 received CONNACK
Client mosqsub/5916-DL2SBA-5 sending SUBSCRIBE (Mid: 1, Topic:, QoS: 0)
Client mosqsub/5916-DL2SBA-5 received SUBACK
Subscribed (mid: 1): 0

  • In the first command windowyou should now see some additional message

1400926458: New connection from on port 1883.
1400926458: New client connected from as mosqsub/5916-DL2SBA-5 (c2, k60).
1400926458: Sending CONNACK to mosqsub/5916-DL2SBA-5 (0)
1400926458: Received SUBSCRIBE from mosqsub/5916-DL2SBA-5
1400926458: (QoS 0)
1400926458: mosqsub/5916-DL2SBA-5 0
1400926458: Sending SUBACK to mosqsub/5916-DL2SBA-5

 If this happens, your first steps are done. Now continue reading hwoto connect to your Mosquitto MQT server from your arduino.

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.