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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 b4a i install mosquitto direct fro...
link: I know this is an older thread, but I am posting this as a heads up: I am going to save anyone new here hours of headache: The lates...

Updated libraries: https://www.b4x.com/android/forum/threads/pi4j2-raspberry-pi-i-o-library.136113/#...
link: Yes tried it and still the same error. I'm fairly sure the error is coming from the B4J library ...
link: You tried this: https://www.b4x.com/android/forum/threads/raspberry-pi-4b-gpio-not-working.118488/#p...
link: Hi All, Has anyone managed to get the jPi4J library working on a Raspberry PI CM4 module? I'm in...

The BeaconParser class parses the advertising data that is sent by BLE beacons. It supports iBeacons...
link: Great! Thank you Erel....
link: B4A example updated: - Based on xCustomListView. - targetSdkVersion set to 26. - COARSE permission ...
link: Erel, this example is very interesting, but it would be easy to update it to use the recent xCustomL...

There are many Linux based, embedded boards available. Most or all of them support Java which means that they also support B4J. In order to start development we need to install Java JRE 7+ (JDK is also good) and to run B4J-Bridge. The steps required: 1. Connect to the board with shell access (SSH). 2. Find the correct Java version and download it to your PC. Search Google for the board name + Ja...

Digi XBee modules are a great solution for wireless communication. Using two or more XBee modules you can create a wide area wireless network. The maximum range depends on the antenna and the configuration. Outdoors, it can reach several kilometers. Wyvpjy9MPD4 The bandwidth is relatively low so the messages should be short. In this example we will control the Raspberry Pi (B4J) with an Android...

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?...

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....

This library is based on Intel mraa library: http://iotdk.intel.com/docs/master/mraa/ It supports devices such as Intel Edison. Note that the attached library will not work on ARM devices such as Raspberry Pi or BeagleBone. Currently it supports GPIO. Support for more features can be added if needed. Example: Sub Process_Globals Private mraa As MraaController Private pinOut As MraaPinDig...

This is a simple example of a traffic light implementation using Raspberry Pi 2. The red, yellow and green leds are connected to pins 27, 28 and 29 (see the numbering scheme: http://pi4j.com/pins/model-b-plus.html). https://www.b4x.com/basic4android/images/SS-2015-09-02_12.40.21.jpg Using a timer we switch between four different states: ta2FJ0w_d5o The complete code: Sub Process_Globals T...

This tutorial is about: - Installing a brand new RaspBerry 2 (RB) (older models will do, too) - configure WiFi on the RB - get remote access to the RB from your PC via "Putty" - share files between RB & PC via "WinSCP" - prepare the B4J bridge on the RB - write a B4J programm and test/run it on the RB 1. Buying a Raspberry I recommend to buy a bundle. So you can be sure ...