FTDI FT232RL USB to TTL Serial Adapter  3.3V and 5V Operation

FTDI FT232RL USB to TTL Serial Adapter 3.3V and 5V Operation – Works perfectly wth the Arduino Pro mini boards and ESP8266 boards

This USB to TTL serial adapter is ideal for many uses, including:

Programming microprocessors such as ARM, AVR, etc
Working with computing hardware such as routers and switches
Serial communication with many devices such as GPS devices
Serial terminals on devices like the Raspberry Pi
Unlike most USB to TTL serial adapters, this adapter supports both 5V AND 3.3V operation!

Simply set the jumper as required to choose between 5V and 3.3V as labelled on the board.

The adapter comes with a right-angle connector fitted allowing you to use it straight away.

If you need to access any of the other inputs or outputs of the FT232RL.

All the useful signals are provided as through-hole solder pads – ideal for use with straight headers into a breadboard, for example.

The main connector has 6 pins:

DTR: Data Terminal Ready – an output used for flow control
RX: Serial data Receive pin
TX: Serial data Transmit pin
VCC: Positive voltage output – this is controlled by the jumper.

If the jumper is set to 5V, this will provide a 5V output. If the jumper is set to 3.3V, this will provide a 3.3V output.
CTS: Clear To Send – an input used for flow control
GND: Ground or 0V
For most uses, you can simply connect the following pins:

RX on this board to the TX pin on your device
TX on this board to the RX pin on your device
GND on this board to GND on your device

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