B4J Library [IoT] jPi4J - Raspberry Pi GPIO controller - Erel    Jun 26, 2023   (19 reactions)   tags: Raspberry Pi GPIO Updated libraries: https://www.b4x.com/android/forum/threads/pi4j2-raspberry-pi-i-o-library.136113/#content This is a wrapper for Pi4J library. It allows you are control the Raspberry Pi board GPIO pins. Using this library is quite simple. You can use it from a UI app or non-UI app. First you should initialize a GpioController object. The second step is to initialize one or more pins.../android/forum/threads/jpi4j-raspberry-pi-gpio-controller.37493/#post-232767 Download link: www... B4J Question Liberica 11.0.11 full JDK install problem in Raspberry Pi 4b - hatzisn    Jun 25, 2021 Good evening everyone, I tried to install Liberica 11 from their site (I also tried with 16) in Raspberry Pi 4b. I have read that the full JDK includes the JavaFX too to run UI applications in Raspberry Pi. I failed big time. I followed the installation instructions as described here: https://www.b4x.com/android/forum/threads/raspberry-pi-b4j-ui-applications-with-liberica-jdk.92950/ And here is what I get pi@raspberrypi:~/Downloads $ sudo apt install ./bellsoft-jdk16.0.1+9-linux-aarch64-full... B4J Tutorial Raspberry Pi with Java 11 - Erel    Aug 8, 2019   (16 reactions) Running UI apps on Raspberry Pi with Java 11 is relatively simple. 1. Download Liberica JDK. Download the lite version: https://github.com/bell-sw/Liberica/releases/download/11.0.1/bellsoft-jdk11.0.1-linux-arm32-vfp-hflt-lite.tar.gz 2. Copy it to the RPi and unpack it: tar -xvf bellsoft-jdk11-linux-arm32-vfp-hflt-lite.tar 3. Download the latest version of b4j-bridge (1.41+). wget www.b4x.com/b4j/files/b4j-bridge.jar 4. Run b4j-bridge: sudo jdk-11/bin/java -jar b4j-bridge.jar... B4J Tutorial [IoT][RPi] - Raspberry Pi Bluetooth Tutorial - Erel    Nov 10, 2015   (7 reactions) Using the new jBluetooth library it is possible to communicate with Raspberry Pi devices over... with a video that shows an Android device connects to the RPi with PiFace. The Android device... B4J Library Pi4J2 - Raspberry Pi I/O library - Erel    Jun 26, 2023   (19 reactions) At some point during 2019, the author of wiringpi, which is the native library that Pi4J was based on, stopped its development. Luckily, there is a new version of Pi4J which is now being actively developed and it works with all recent versions of Raspberry Pi. It is not backward compatible. jPi4J2 wraps the new Pi4J2 library. Currently only DigitalInput and DigitalOutput types are exposed. Blink example: Sub Process_Globals Private pi4j As Pi4J Private PinOut As DigitalOutput End... B4J Tutorial B4J and Raspberry Pi boards - Erel    Dec 5, 2018   (9 reactions) New tutorial based on Java 11: Raspberry Pi with Java 11 The first step is to download and run B4J-Bridge: Remote debugging with B4J-Bridge Raspberry Pi is a low-cost Linux board: http://www.b4x.com/basic4android/images/SS-2014-01-23_11.32.59.jpg B4J v1.50 adds support for these boards. Here are two screenshots: DBUtils: http://www.b4x.com/basic4android/images/SS-2014-01-23_11.36.26.jpg Moving smiley: http://www.b4x.com/basic4android/images/SS-2014-01-23_11.37.04.png Out of the box... B4R Tutorial Arduino + Raspberry Pi - Erel    Feb 12, 2018   (8 reactions) . This is a nice example as it shows how B4X tools can be used to program both the Arduino side and the Raspberry Pi side. Arduino and Raspberry Pi complete each other nicely. The Arduino is easier to connect to external hardware and the Raspberry Pi is a full and powerful computer. The two devices are connected... it is convenient to run the RPi side on the PC. Otherwise you need to disconnect the Arduino each time you want to compile and connect it to the PC. Once the program is ready we connect B4J to the RPi... B4J Tutorial [RPi] - PiFace Control And Display (CAD) - Erel    Jan 21, 2016   (16 reactions) https://www.b4x.com/basic4android/images/SS-2016-01-21_14.23.06.png jPi4J library supports the PiFace Digital extension. However it doesn't support the CAD module as the underlying library (Pi4J) doesn't support it. So we need to be a bit more creative here. We will run and interact with a simple Python script using UDP. Note that an external network is not required. The Python script w... B4J Question B4J GUI apps not supported anymore on RPi4? - sorex    Mar 10, 2022 Hello, I received a new Raspberry Pi 4B today at work and installed everything by following the 11.0.1 guidelines. But when I tried to run a B4J GUI app (empty and printing a log line) I get the errors you see below. Also the VNC connection totally freezes as long as the java application runs. The only cure is pulling out the power or using SSH to kill the java process with the highest process ID. Anyone else who had this problem? The console app doesn't have any issues or errors tho... B4J Question Raspberry Pi 4B GPIO Not working - fredeady    Jun 1, 2020 I can't get an LED to toggle on any of the Pi's GPIO pins. I see that Gordon has updated wiredPi but no longer supports it. I loaded his latest version 2.52 on the Pi. Buster comes with 2.50. I loaded up the Debian Pi4J jar on the Pi and am using the B4J library. I feel sort of dumb as I can't seem to make this work. I know I'm missing something. My Pi is running Buster. I can to... Page: 1   2   3   4   5   6   7   |