Android Question send a byte from android to arduino

[ehsan2521]

hi
I'm new in b4a.can you guide me to send a byte of number to Arduino UNO with OTG and usb cable.do you have an example of b4a and Arduino?
THX

 

[Erel]

1. Use B4R to program the Aduino.
2. You can use felUsbSerial or UsbSerial2 libraries for the communication: https://www.b4x.com/android/forum/threads/felusbserial-alternative-usb-serial-library.62216/#content

 

[ehsan2521]

thanks Erel this program is for receive data by android but I need a program that sends byte or char to Arduino

 

[Erel]

felUsbSerial / UsbSerial2 allow you to read and write to the serial port.