RS232 x2 /RS485 x2  for Raspberry Pi  B+ 2B 3B 3B+ & Pi Zero/W

   

1. 2UART-ext TTL with Extension socket

a. 2x RS485 extension Module
b.
2x RS232 extension Module
c. 2x RS232 /2x RS485 extension Module

 

Spec

1. Provide RS232 x2 / RS485 x2 
2. Jumper select RS232 / RS485 output (Rs232/RS485 module)
3. RS485 auto RTS control by software
4. RS485 D+ D-  120 ohm resister select
5. It provides an individual 3.3V power for UART Board
6. Provide HAT EEPROM for future driver program update.
7. Raspberry Pi model 3B & Pi Zero W still can use on board Bluetooth & WiFi

 

2UART-ext system Board

   

a. 2UART-ext+ 2x RS485 extension Module
b.
2UART-ext+2x RS232 extension Module
c. 2UART-ext+ 2x RS232 /2x RS485 extension Module
 

2UART-ext+2x RS232 extension Module + DB9 cable
2UART-ext+ 2x RS232 /2x RS485 extension Module
 
+ DB9 cable

Male DB9 Pin 1  to Pin9  output 

 DCD , RXD, TXD, DTR, GND, DSR, RTS, CTS, RI

 

                                                      

Serial GUI Control Panel
Control up to 4 Serial Ports

                        

  • 1. Scan: Scan for available UART devices.
  • 2. Launch cutecom together when starting Serial Port.
  • 3. Port number in system
  • 4. Baud Rate choose
  • 5.6.7.  UART Port  Information:  Port Address 0x48,0x49, 0x4c, 0x4d

              Chip Address Location, Channel Number ( 1 / 2 ), TX and RX receive counter,

              and Serial port Location /dev/pts/X

  • 8. RS485 : Enable RS485 in this Port
  • 9. Start : Start UART port

 

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;
./Pi232 -a ADDR -c CHANNEL -b BAUD -s DEVPTS

./Pi485 -a ADDR -c CHANNEL -b BAUD -s DEVPTS


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;
./Pi232 -a 0x4d -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

./Pi485 -a 0x4c -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

 

 

     Enable RS232 in command mode   

 

 

  Enable RS485 in command mode

 

 

   

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  

 

 
type "top" in terminal 
Enable 4 Port RS232 x2 - RS485 x2 
 You will see 2 x Pi232 & 2 x Pi485 run in system 
 
 
 
File Download      

  Software Pack

  User Manual

 

Package Content

   1x  2xUART-ext Main board

1x  2x RS232 / RS485 module  board

1x manual 

  

 
 

Raspberry Pi

extra UART

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