bluetooth

RPM meter connected to Bluetooth OBD plug with ELM327. To request RPM you send to the ELM327 "010C" and the reply is: 7E8 04 41 0C 0D 80 . 7E8 = reply to test, 04 = reply with 4 bytes, 41 = reply OK, 0C = PID (command) echo, 0D 80 = 2 bytes of data. Most of the code is derived from Erel's examples.

I am using the BLE2 Library V1.38 and the latest B4A. The app is used to calibrate BLE-based equipment that I designed and generally works well. The company selected a generic tablet to issue to the calibration companies, the idea being that a standard device is easier to support, even though it...

Hello all, I would like to write an Android app that allows the phone to act like a Bluetooth HID keyboard. I want to send keystrokes and commands from the app to a BIuetooth-enabled computer. Is that possible with the BLE Peripheral library? Can someone please show me an example of how it is...

Hi How do I connect to the encrypted Bluetooth module HM-17? I want to connect to the HM-17 Bluetooth module through the Serial/BluetoothAdmin library What should I do? I also visited the post below, but no connection was made...

B4A - coder needed- Have an urgent job to do- Google maps GPS- WiFi- Bluetooth coding. Anyone interested pls contact me with your fees and ability-outline to work on this project on : robioptic@yahoo.com. :) Thanks Rob -o-o-

Hola! Tengo una aplicación desarrollada en B4A de un sistema de autoventa con impresión de albaranes que funcionaba desde hace años, pero a raíz de instalar la versión 9.8 me ha dejado de imprimir vía bluetooth en ciertos dispositivos antiguos, en otros sigue imprimiendo bien, y en otros...

Hi, I'm using the updated example from here: https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/ Discovery works with targetsdkversion="28" (Android9), but fail with targetsdkversion="29" (Android10). As I want to use in my app the latest features from...

Hello, I use Bluetooth BLE for my APP (iBLE 2.01). It works fine with iOS 12 (iphone 5 and iPad), but I have this error with iOS 13.3 (iPhone X) It crash after this line : Application_Start Application_Active Page1_Appear SignalHandler 6 Error occurred on line: 3874 (ChoixSession) Signal -...

I´m testing the bluetooth connection. When I run the program it reads all bluetooth arround and stop. If I go to Android Config anf disable the bluetooth the "Serial_Conected" routine inside BluetoothAdmin is calling without stop, even if you turn the bluetooth on again it doesn´t stop calling...

Hi B4A Masters... Can anyone here help me to wrapping MODBUS RTU? I have to create an application which will communicate with Bluetooth HC05 @ PLC Board using stardard Modbuss RTU. And how much I have to donate for this library?

Simply reset your throttle body in order to fix throttle problems . (This function works on most cars like Hyundai, Mercedes Benz , BMW etc... Note: Throttle Reset works with an ELM327 based car scanner that plugs into the diagnostics socket in the car and pairs with this app over Bluetooth...

This is my Gps sports tracking App. I started this project 10 months ago without previous android programming experience. I started the project with B4a 8.3 then I moved to B4a 9.3. With the great help of this forum, I can now say that the first version is finished. Further improvements of the...

Hi I’m trying to send data from the Arduino to mobile app and I’m getting a wired result and I’m unsure why I will try and send HelloWord from the Arduino and it comes out on the B4A Log as the following >H >elloWorld I have added the code I’m using below I got the code from the demo...

How do I get the key pressed from a bluetooth keyboard connected to a iOS device in B4i?

Hello everyone, i have written an app which searches for a certain device UID, I have a B4A app running on a device which is running Android 8.0 which basically just listens when the B4J app tries to connect, I followed @Erel 's tutorial here, My question is this, everything seems to work only...

Hi everyone, I have the question as described in the subject. I have this code in manifest: AddReceiverText(sBT, <intent-filter> <action android:name="android.bluetooth.device.action.ACL_CONNECTED"/> <action android:name="android.bluetooth.device.action.ACL_DISCONNECTED"/> </intent-filter>)...

hi, i have this structure: arduino serial monitor window - pc - usb - arduino mega - bt le modul - phone - ble2 example app ble2 example app find the bt device and connect but if me send data from pc via arduino it seems it not receive it, means it not appear in the window. but this works...

I am happy to present my library to print with Iphone (and iPad) with Bluetooh (BLE). Now I can print the images. If you want to have the activation code (Freeing all the functions) contact me in private. (For B4J versione see Here, for B4A versione see Here, for ZEBRA printer Here) This...

BT_Printer library allows you to print text and image to a bluetooth thermal printers It is similar to the BT_Printer library for Android (BLE_Printer for iOS), and implementations, events and methods are almost identical. We are working to have the same library for all platforms. On iOS it will...

This isn't a question, just an observation that might save someone the days of stress that I've just had. Symptom is an app that reads a BLE sensor, works great during development using B4A Bridge, solid as a rock. Then I recompile it with logging disabled (and now even comment out all...