User Manual

RB-Dfr-482 - Multi USB/RS232/RS485/TTL Converter
2.USB Cable A-B for Arduino
3.Micro USB Cable
4.Arduino Jumper Cables
STEP 2：Connection
1. Plug-in Micro USB cable to multiplexer board. The "POWER" LED turns on at the same time.
2. Multiplexer need to install driver before you use. Driver installed completed, please open Control Panel -- Device
Manager in your PC. You will see a new port.
driver download
3. According to the following connection diagram，connect it.
4.Plugin the A to B USB to UNO
STEP 3: Program a sample code for your Arduino UNO
Library installation
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void setup()
{
Serial.begin(115200);
}
void loop()
{
if(Serial.available()){
Serial.write(Serial.read());
}
}
STEP 4 ： Send and Receive data
We need a serial monitor for monitoring data. There are lots of good tools like putty, CoolTerm and so on. In this case, we