Tools

FT232RL 3.3V 5V FTDI USB To TTL Serial Adapter Module
The USB to TTL serial adapter is based on the high quality and very popular FTDI FT232RL chipset and is an excellent way to connect TTL serial devices to a PC through a USB port. 
 Works perfectly wth the Arduino Pro mini boards and ESP8266 boards 
 Ideas 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 
 
 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 
 
 FEATURES 
 
 Support 3.3V, 5V 
 Chipset FT232RL 
 USB power has over current protection, using 500MA self-restore fuse 
 RXD/TXD transceiver communication indicator 
 Pin definition: DTR,RXD,TX,VCC,CTS,GND 
 Pitch:2.54mm 
 Module size: 3.60cm x 1.85cm (L x W) 
 
 Shop 
 AliExpress