Hi. We are working on a project wherr we can use fingerprint scanner and gsm A6 to open doors or lockers. But the problem is that when we set the baud rate for gsm as 4800 the fingerprint is not working but when we set the baud rate for fingerprint sa default(57600) the gsm will not work. Can someone help pls? We dont know how can we set the baud rate for the fingerprint and gsm to work all at once. Thanks.
You cannot have 2 different devices on the same serial port. Best would be an Arduino like a Mega that has 3 extra serial ports (beside THE USB serial port for sketch upload). Then you can have a hardware port for each device.