bluetooth

I have a project I am working on where I have a Bluetooth keyboard that times out (and it must, so it is not an option to try to get around that time out) But when it times out it disconnects and causes my app to restart. The app has absolutely no code dealing with Bluetooth connections...

I wrote an application a little while ago to print to a Bluetooth printer. It worked, but occasionally it would lock up. I was using a TextWriter, which I subsequently found out was not the way to go, with AsyncStreams being the preferred way to go. I've just created a small sample application...

Since some months our app aborts printing via bluetooth on a DPP-250 printer in the middle of the text. I wrote a minimal app to test this (see attached zip). The jpg shows some tests: The first works, the next two abort, the next works, the last aborts. I'm using B4A 8.50 with Serial 1.26...

Since some months our app aborts printing via bluetooth on a DPP-250 printer in the middle of the text. I wrote a minimal app to test this (see attached zip). The jpg shows some tests: The first works, the next two abort, the next works, the last aborts. I'm using B4A 8.50 with Serial 1.26...

Hello, i see here, that many people have problems to install there wear app to his watches. I list the steps that are needed so that you can quickly look up when you need it. Phone: -install the "Google Wear" App for Android -connect your watch with the app -go to "Advance Settings" -enable...

Hello, I used Erel's example in Android Bluetooth / BluetoothAdmin Tutorial post: https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/ Does anybody know if there is a way (in Erel's chat example) to search only for devices that have the same app (Erel's...

My company developed a wind speed sensor that communicates via Bluetooth. The original code was developed about 2 years ago. A simple app, it worked very nicely running on Android 5. Now it seems the code does not run and can not be installed on Android 7. We are looking for a developer to...

My company developed a wind speed sensor that communicates via Bluetooth. The original code was developed about 2 years ago. A simple app, it worked very nicely running on Android 5. Now it seems the code does not run and can not be installed on Android 7. We are looking for a developer to...

I have an app that is to communicate with an STM32 sending short, usually single byte, commands and receiving large packets of sensor data over BT, frequently (50Hz or so). The app and the firmware are both written and run happily in simulation mode. They are just waiting for me to finish the...

Hola a todos. Estoy tratando de crear una sencilla aplicación que permita enviar comandos y recibir respuestas de un arduino. Este es el código que estoy empleando. #Region Project Attributes #ApplicationLabel: B4A Example #VersionCode: 1 #VersionName: 'SupportedOrientations...

I am developing a widget that I want to sell commercially. Doesn't do much really, a few sensors sending information every 250mS or so. This means comms to IOS and Android phones without a local router connection ( in the wild) The problem is that depending on the model of the users Android...

Can I communicate with cellphone through bluetooth with ESP32 ? It´s already implemented ? Thanks

I want to talk between two mobile phones (over SIP) out in the nowhere (where I cant use normal phone call) with bluetooth headset and Direct Wifi (hopefully over 100meters) between two or more phones! I cant understand why its so complicated! OK I don't need SIP but full duplex without click...

he Makeblock robot is a low-priced kit that is easily assembled and that works well as designed. The default control sofware is effective but does not work for custom complex control sequences. It is possible to replace the default firmware with one's own through B4R, Arduino IDE, or the mBot...

Hello. I have a question about the bluetooth connection. I know that here are guides on how to connect arduino with a bluetooth module, but all in the B4R program. However, I have the entire script written in the Arduino IDE, it is very extensive. It would take a long time for me to transform...

I have a special application where an Android device is configured as a kiosk and it is placed at a public location. Anyone having a special app in his/her phone is invited to send messages to this device via Bluetooth. I would want my Android device to behave like a printer - user scans for...

ANNOUNCEMENT Starting today, this library will be abandoned and will no longer be distributed. A new, more comprehensive Android library for ESC/POS thermal printers will be released. (BT, BLE, LAN, USB) (here) (No WRAP, No Java Only B4A) BT_Printer library allows you to print text and...