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://www.b4x.com/android/forum/threads/ble-bluetooth-low-energy-library.46099/#content Tips &....BLUETOOTH_SCAN) AddPermission(android.permission.BLUETOOTH_CONNECT) And requesting at runtime: Dim...("android.permission.BLUETOOTH_SCAN", "android.permission.BLUETOOTH_CONNECT", rp...
link: Hi, I have an app that works fine on many devices, but not on some. To test, on one of the devices that doesn't work, try the Erel demo, BLEExample - B4a. It's a Redmi A1. It does the proce...

95662 Updated implementation, based on B4XPages of https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/#content. The code is much simpler compared to... with targetSdkVersion 33. Note the new method to enable Bluetooth if needed. - Example updated....permission.ACCESS_FINE_LOCATION) AddPermission(android.permission.BLUETOOTH_ADVERTISE) AddPermission(android.permission.BLUETOOTH_CONNECT) AddPermission(android.permission.BLUETOOTH_SCAN) These are runtime...

Better implementation based on B4XPages: https://www.b4x.com/android/forum/threads/b4xpages-bluetooth-chat-example.119014/#content Tutorial was rewritten in April 2018. We will create a chat example between two Android devices. All the non-UI code is implemented in a class named BluetoothManager. It is initialized in Service_Create of the starter service. It is always better to implement communication related code in a service or a class initialized from a service. This way the communication...

This library allows you to print with thermal printers compatible with the ESC POS language in 4 different communication channels (USB, Bluetooth SPP, BLE, LAN) you can download the ble3 library from here The DEMO version prints one minute every 2. The full version of the library will be issued to... version, such as LAN, USB, NFC please contact me privately. OS Bluetooth SPP BLE (Beacon) USB...: BluetoothIsDisabled ConnectedToPrint (Success As Boolean) DataReceived (Buffer() As Byte) DisconnectToPrint (Mac...

Hi all! Terminal App is receiving the data as per attached screenshot. But I couldn't receive it in B4A app. The numbers in green color are the ones I want to parse. Any help appreciated. 160448...

: https://www.b4x.com/android/forum/threads/pybridge-bleak-bluetooth-ble.165982 And B4J v10.2 beta #4...

For the last couple of weeks I have been playing with an 80mm Bluetooth ESC/POS thermal printer... wide range of prices. Here then is a Printer class that will connect by Bluetooth to the printer...
link: . It's a very simple library to integrate and use. I did however update this library from bluetooth...
link: Hello, apparently it was a problem with the printer, one of those cheap ones. I tried it on another ...
link: Hello, I have a question. I need to print a QR code that is between 30 mm and 40 mm per side on pape...

This example implements a simple "walkie talkie". http://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Wikipedia_images_011.jpg/270px-Wikipedia_images_011.jpg (src: wikipedia) http://www.b4x.com/basic4android/images/SS-2013-06-30_16.26.21.png Once the two devices are connected, either over Bluetooth or over the local network, you can press on the activity and talk. The audio captured from the microphone will be sent to the other device and played. Note that this is a half...

The 0x2902 descriptor is written to by SetNotify, and that is working beautifully. But there are other descriptors (per https://www.bluetooth.com/specifications/gatt/descriptors ) and I cannot work out how to read descriptor 0x2904 aka "Characteristic Presentation Format". The descriptor shows up in a BLE Analyser app, alongside the 0x2902 notify descriptor for the same characteristic... currently, it is a pressure measurement in PSI, ie 0x27a5 per https://www.bluetooth.com/specifications...

I've got a customer in the field who has Android 10. His Bluetooth is turned on and he can access BLE devices via apps. On each app screen at the very top his Bluetooth icon is displayed.... On those 2 test phones I clearly see the Bluetooth icon displayed on the upper status bar as shown here... left & right mechanically. His Android 10 phone, however, shows that bluetooth icon on every app except for mine. So my customer in the field gets no Bluetooth signal from my app to my control...