CP2104 USB to Serial Bridge (Arduino Programmer)

Overview

This CP2104 USB to Serial Converter is super tiny, a highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating and programming.

Features

1. 3.3V and 5V compatible, with a switch on the board to select,
2. DTR pin, which is essential for Arduino auto-programming,
3. Super tiny, with a micro USB connector, and
4. 2Mbps maximum rate as required for the Ox64.

With this easy/cheap module, it would be the most ever easy for communication between your PC with Arduino, both for serial port communication of Arduino auto-programming.

Pins

• Pin 1 - DTR (Connect to Arduino Reset)
• Pin 2 - RXD (Connect to Arduino TX)
• Pin 3 - TXD (Connect to Arduino RX)
• Pin 4 - GND
• Pin 5 - IO (5V or 3.3V)

NOTE: Always try 3.3V first if you are unsure, as 5V could damage some boards!