extra  UART HAT Auto Load



Auto load UART when Pi Boot up in 3 way

1. command   ->  sudo crontab -e

 example for 4 UART port    0x4C , 0x4D

Auto Load Pi8s when Pi Boot


sudo crontab e


add 4 line in the end of file


@reboot /usr/bin/./Pi8s a 0x4C c 1 b 38400 s 1

@reboot /usr/bin/./Pi8s a 0x4C c 2 b 38400 s 2

@reboot /usr/bin/./Pi8s a 0x4D c 1 b 38400 s 3

@reboot /usr/bin/./Pi8s a 0x4D c 2 b 38400 s 4


when load minicom also open port1 (picom1 /dev/pts/x)

minicom D $(cat /dev/picom1)



2. create a folder in   /root/.config/

autostart file


3.    etc/rc.local              




Scan.sh    can help you know the UART port status




Command for UART HAT

Also provided is a terminal command mode to activate serial ports through a terminal / ssh.
You can also activate a serial port on boot up with the provided software.
Commands for starting the serial ports via command line;
ADDR = Address of Serial Port e.g. 0x48, 0x49, 0x4C, and 0x4D
CHANNEL = Channel of serial Port ( 1 / 2 )
BAUD = Baud Rate for the Serial Port
DEVPTS = PICOM Service Number ( Will direct the filename to /dev/picomX where X = your number )

For example, To start a serial port from 0x49, on channel 2 with 115200 Baud run the following;
./Pi8s -a 0x49 -c 2 -b 115200 -s 1
This will activate the serial port and then set /dev/picom1 to your serial port location /dev/pts/X





1. device ->   /dev/pts/1        2 . Baud rate  38400

3. click Open device  

4. input AT command (HC-05 blutetooth module)

5. screen will show Bluetooth module response  




Raspberry Pi

extra UART


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