Search Results

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B4J Tutorial [IoT] MQTT Protocol - Erel    Oct 19, 2015   (16 likes)   tags: MQTT, Messages

Machine to Machine (M2M) and Internet of Things (IoT) contexts where a small code footprint...
link: I run mosquitto in vps with Ubuntu 16.04.5 LTS and i use SSL without any problems, using b4j and b4...
link: I know this is an older thread, but I am posting this as a heads up: I am going to save anyone new ...
link: It is always better to start a new thread....

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B4J Library [IoT] jPi4J - Raspberry Pi GPIO controller - Erel    Feb 5, 2014   (14 likes)   tags: Raspberry Pi GPIO

This is a wrapper for Pi4J library. It allows you are control the Raspberry Pi board GPIO pins. Usi...
link: The library was updated with the latest version of Pi4J. It fixes the following error: Unable to de...
link: Please start a new thread in the questions forum. Make sure to post the full error message from the ...
link: Hi all! First of all, I love your job Erel... I receive this error using Pin 7 as input. (Programmin...

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B4J Tutorial [IoT] Linux Embedded Boards - Gettings started - Erel    Nov 16, 2015   (5 likes)

There are many Linux based, embedded boards available. Most or all of them support Java which means that they also support B4J. In o...
link: Please start a new thread for this question....
link: I just unpacked my raspberry pi 3 and am trying this. I got the bridge running with this command: java -jar b4j-bridge.jar (not jdk- ...

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B4J Tutorial [IoT] - Raspberry Pi CCTV with MQTT - Erel    Dec 21, 2015   (12 likes)

Simple solution that uses an embedded MQTT broker with a MQTT client to send the camera output to an...
link: Yes, but this is not the correct place for this question....
link: Instead of using an RPI, could I use my phone's camera? and how would it be? Thank you ....
link: Please start a new thread for this and post the relevant code....

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B4J Tutorial [IoT] Welcome to the Internet of Things - Erel    Nov 23, 2015   (16 likes)   tags: B4R, RASPBERRY, B4J, Erel, B4A

This example demonstrates how the B4X tools can be used to create a solution with multiple types of components and communication chan...
link: All the code is included. You don't need PHP....
link: Erel what About browser? should i write PHP script for making UI switch button?...

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B4J Tutorial [IoT] Traffic Light with Raspberry Pi - Erel    Sep 2, 2015   (7 likes)

This is a simple example of a traffic light implementation using Raspberry Pi 2. The red, yellow an...
link: An updated GPIO class for OrangePi, including Pulse Width Modulation: Edit: Found out that the READ ...
link: Found the solution ! The command modprobe does not run in a script, but it controls the loaded modul...
link: The attached program demostrates the lights on orangepi. It includes also a button which holds the c...

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B4J Library [IoT] jMRAA - Intel Edison - Erel    Nov 23, 2015   (4 likes)

This library is based on Intel mraa library: http://iotdk.intel.com/docs/master/mraa/ It supports d...
link: V1.20 is now available. The UART API is now exposed....
link: Thanks. That is great news!...
link: Support for UART will be added in the near future....

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B4J Tutorial [IoT] Web Server Performance: Raspberry Pi 2 vs. Intel Edison vs. BeagleBone Black - Erel    Nov 17, 2015   (9 likes)

I ran some tests to check how these boards perform as web servers. The tests were similar to the tests done here and here. Data was read and written to a SQLite database in wal mode. See this link f...
link: Could be interesting to see a report with the new PI 3...

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B4J Tutorial [IoT] Raspberry 2 & B4J from the scratch... - KMatle    Oct 28, 2015   (21 likes)

This tutorial is about: - Installing a brand new RaspBerry 2 (RB) (older models will do, too) - con...
link: Even stranger than that - if I connect the cable in addition and then remove it - it works, but neve...
link: Yes. I can run the server by the bridge but it does not get calls. Loading the browser page does not...
link: It is indeed strange. B4J-Bridge is connected over wifi?...

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B4J Code Snippet [IoT] RaspBerry: Execute Python script with parameters from B4J - KMatle    Nov 12, 2015   (7 likes)

With this snippet you can - call a Python script (command line) on you Raspberry (or other programs by changing the parameters) - with parameters - in "sh_ProcessCompleted" you will get the command line output in "StdOut" You need the "jShell" library (libs tab in b4j -> add it) Sub AppStart (Args() As String) Dim sh As Shell sh.Initialize("sh", ...

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