led

  1. SJQ

    Android Question Library to control side LEDs

    The company I work for have been looking at an alternative wall mounted android-based device with side LEDs. The device runs Android 8 I’ve previously used a different device from SIBO and I used their library (a jar file) with inline Java and that all worked, however this isn’t as simple. The...
  2. irhamnur00

    B4R Question ESP32 connected to Node-RED, but it can't receive a topic message input from the server

    I was just trying to make my first project with B4R. Also, I was a newbie in microcontroller programming. In this my first project, I make a dashboard in Node-RED to display a value from the ESP32 and to control the blue LED on ESP32. The value had been successfully sent, but until now the...
  3. P

    Android Question LED switch on / off

    I'm from Germany and there are electricity meters there where you can query the consumption figures. To do this, you have to light up a diode and thereby enter the code so that you can access the device. I wanted to trigger this "blinking" via APP. So I press a button and the LED (of the...
  4. epiCode

    B4A Library LEDLabel 1.01

    This is my first attempt to create a library Please be kind :) This allows you to make a label with tiny indicator on left which can be turned on or off (with any choice of color) Usage instructions: - Download the ledlabel.jar & xml and put it in the B4X additional library folder - Add...
  5. rwblinn

    B4R Library rLEDController

    rLEDController is an open source B4R B4XLib for controlling multiple LEDs. The LEDController enableds to control up-to 10 LEDs individually, like turn ON/OFF, turn on for period of time or number of timer ticks. Background The background for developing this module, is to control a number of...
  6. youjunjer

    Android Question Heartbeat Detect by LED Flash Light and Back Camera

    Hi All, I have a project to detect heartbeat by LED Flash Light and back camera. There are many apps already in the google play market. Such as 1. https://play.google.com/store/apps/details?id=si.modula.android.instantheartrate 2...
  7. DavideV

    B4A Class Torch class

    Hello, this is a simple B4A class to make easy the use of the built-in led of our beloved android devices. Tested on various devices up to android 8. The goal is to use the led as a Torch. The code is commented and comes with an example. It uses inline java and depends on: -Javaobject lib...
  8. P

    Android Question Turn On / Off Flash Led

    Hi to all, I'am trying to use the flash led of the phone like a Torch. I searched the community and found some examples (listed below), but none of them work in newer phone. To be more specific: - Motorola XT1039, Android 5: All example works - Sony Z5 Compact, Android 7: No Example Work -...
Top