serial

  1. R

    Spanish Error al imprimir por bluetooth

    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...
  2. yaniv hanya

    Android Question using usb with microchip controler

    Hello, I"m in the middle of project using android tablet to control a microchip, that in his turn control a machine. just sending serial command like- "openWaterPump", "closeWaterPump" ans so on. I did all my checking using ardoino, and it worked great. now we move to production level and we...
  3. walterf25

    B4J Question jBluetooth Pairing

    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...
  4. C

    Android Question Bluetooth printing aborts

    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...
  5. Cain Soft

    B4R Question Send AT command to AT-09 BLE module ?

    Hi All, How can I send AT command to AT-09 (HM-10 clone) BLE module ? The Arduino code is : #include <SoftwareSerial.h> SoftwareSerial mySerial(2, 3); void setup() { mySerial.begin(9600); Serial.begin(9600); delay(200); mySerial.println("AT+NAMEdemoBleX"); while (mySerial.available())...
  6. M

    B4J Question Strange issue with serial port

    Hi everyone , i have a a program that connect with a scales weight, i have no problem doing the conexion, the problem is when the scale is off, but conected , the serial recognize the port but when i try to connect with it and send the comand to obtain the weight i have to posible respons: 1.-...
  7. Humberto

    B4R Question ESP32 serial comunication with bluetooth

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