Keep it as simple as possible!
In preparation for the JavaOne 2014 Session my 7″ touch screen from Chalk-Elec finally found a new home. I bought a 1 mm sheet of aluminium and treated it with my jig saw and a rasp and folded a triangle stand for the screen. Basically there would be room enough for e.g. a Rapsberry Pi… Continue Reading “PiMac unibody” or a new home for my touch screen
Just released a new version of MQTT.fx. New: “Publish”, “Subscribe” and “Broker Status” can now be detached to be opened in a separate window: Just drag a tab title and drop it where the window should be placed. Closing of the window restores the content at the former position. also I have done some UI… Continue Reading MQTT.fx 0.0.5 released
Just released new version of MQTT.fx. Download latest binaries HERE. New: – revisited UI (return of “real” buttons) – extended support for $SYS-topics: subscription for mosquitto or Hive MQ can be choosen (in respect to @dobermai). – publish and subcrive/receive are now different tabs – experimental support for http-proxy (in respect to @dimaki123). – last… Continue Reading MQTT.fx 0.0.4 released
Download latest binaries HERE. Most significant change: I have added a pane to show some status values of the broker: In v0.0.3 these $SYS topics are recognised (Tooltips are showing the descriptions): Version: $SYS/broker/version Build: $SYS/broker/timestamp Uptime: $SYS/broker/uptime Subscriptions Count: $SYS/broker/subscriptions/count Changeset: $SYS/broker/changeset Clients Connected: $SYS/broker/clients/active Clients Expired: $SYS/broker/clients/expired Clients Disconnected: $SYS/broker/clients/inactive Clients Maximum: $SYS/broker/clients/maximum… Continue Reading MQTT.fx 0.0.3 released
A new version of MQTT.fx is available and I have polished the pre-alpha version and added some new features to MQTT.fx. Download latest binaries HERE. The Video for Jim Weaver’s “Real World Apps” talk @GeeCon2014 in Kraków Controls to connect to the broker and to subscribe to topics are now placed in the header: “Connection… Continue Reading MQTT.fx 0.0.2
Download latest binaries HERE. Now that MQTT is on its way to become THE industry-standard protocol for IoT and M2M communication the IoT community might have to review current message strategies. Isn’t it a very good way to start with a JavaFX-Client to get into MQTT ;-)? So, currently I am working on JavaFX based… Continue Reading JavaFX based MQTT Testing Utility
The recently released NetBeans 8 holds a great gift for all Java Embedded Developers: Build-in support for Remote Java Standard Edition platform. To introduce this great and handy feature I created some screencasts: Part1: headless Part2: JavaFX on Pi Part 3 – Remote Platform Debugging José Pereda has also blogged about this feature in action:… Continue Reading NetBeans 8 – Shortcut to Remote Platforms
Switch on and off an LED and let run a motor at one speed and direction is easy, but what if I want to e.g. control the brightness of an LED or control motor-speed? A kind of analog signal is needed: This is done with Pulse-width modulation (PWM). PWM is a “modulation technique that conforms… Continue Reading Between 0 and 1 – PWM with Raspberry Pi