Release the button as it says Done uploading. Press the reset button while the code is being compiled. Make sure to select the right board and COM port. The code above will blink the inbuilt LED 13 of the Arduino Mini Pro three times to display the data communication between the PC and Arduino Mini Pro through the CP2102 USB-to-UART module. The above code is very simple to understand the working of the UART module. the loop function runs over and over again foreverĭigitalWrite(LED_BUILTIN, HIGH) // turn the LED on (HIGH is the voltage level)ĭigitalWrite(LED_BUILTIN, LOW) // turn the LED off by making the voltage LOW initialize digital pin LED_BUILTIN as an output. the setup function runs once when you press reset or power the board This example code is in the public domain. Model, check the Technical Specs of your board at:

If you want to know what pin the on-board LED is connected to on your Arduino The correct LED pin independent of which board is used. It is attached to digital pin 13, on MKR1000 on pin 6. Most Arduinos have an on-board LED you can control. Turns an LED on for one second, then off for one second, repeatedly. Connecting DiagramĬonnect the pins of CP2102 UART Module with Arduino Mini Pro according to the table provided down below: Arduino Pro Mini Then go to Tools > Serial Port > Select COM port. Open Arduino IDE > Tools > Board > Select Arduino Mini Pro. If it is detected, it is ready to be used. Open Device Manager and check the COM port.Software and Tools > CP210x Windo w s Drivers > Download and Install.Some of the additional features of the USB to UART module are described below: Package Type: 28-pin QFN package (RoHS-compliant).When it changes its state, a hardware interrupt is produced. It indicates when a good carrier is received from the modem.Īctive low Ring Indicator input pin. It shows that the terminal is ready for data transfer.Īctive low Data Carrier Detect input pin. It shows that it is ready to accept the data.Īctive low Data Terminal Ready output pin. It supports the Xon/Xoff handshake mechanism.Īctive low Ready-to-Send output pin It supports the Xon/Xoff handshake mechanism.Īctive low Data Set Ready input pin. The pin configuration in tabular are detailed as below: Pin NameĪctive low Clear-to-Send input pin. The pinout of the compact CP2I02 UART module is as shown: Pin Configuration

TX/RX LED: These LEDs indicate the functioning of the respective pins.

Serial to usb pinout