full-duplex: both devices can send and receive at the same time.

half-duplex: devices can only send or receive at once.simplex: one direction only without a message back to confirm the receiving.The communication between these two devices can happen in different ways: When you need two-way communication, two wires are needed between RX and TX from both sides: In a sequence, through a single wire from a transmitter (= TX) to a receiver (= RX). See this user-contributed tutorial for more information.Serial communication can be used to transfer data between different boards, devices, etc. You can use the ISP header with an external programmer (overwriting the DFU bootloader). The ATmega16U2 is loaded with a DFU bootloader,refer to the DFU mode section. You can then use Atmel's FLIP software (Windows) or the DFU programmer (macOS and Linux) to load a new firmware if required. The ATmega16U2 firmware source code is available. The adapter can easily connect to the Arduino Mini.Īn onboard polyfuse limits the current to 500mA and protects the host computer from short circuits. Status lights include power, RX and TX activity. 5V, Ground and a Reset pin are also exposed. The USB Serial Adapter has an onboard micro-USB connector and 5 pins including RX (for receiving data from the computer) and TX (for transmitting data). The '16U2 firmware uses the standard USB COM drivers, and no external driver is needed. It features an Atmega16U2 programmed as a USB-to-serial converter, the same chip found on the Arduino Uno. This board converts a USB connection into a 5 volt Serial TX and RX that you can connect straight to the Arduino Mini or other microcontrollers, allowing them to talk to the computer.

The USB Serial Adapter has an onboard micro-USB connector and 5 pins including RX (for receiving data from the computer) and TX (for transmitting data).

The 16U2 firmware uses the standard USB COM drivers, and no external driver is needed. The Arduino USB 2 Serial micro features an Atmega16U2 programmed as a USB-to-serial converter, the same chip found on the Arduino Uno. With the Arduino USB 2 Serial micro get the 5 volt TX and RX lines from a computer USB port that you can connect straight to the Arduino Mini 05 or to other microcontrollers for programming or data communication.

Serial tx rx gnd