Arduino Pro Mini board comes without built-in USB circuitry, so an off-board USB-to-TTL serial adapter/Converter must be used to upload sketches. The FTDI USB 3.3V 5.5V to TTL Serial Adapter/Converter Module is an ideal choice for this purpose.
Packing List (bulk pack):
Features:
- Chip: FT232RL
- Interface: Mini USB
- Draw out all signal port of FT232RL chip
- RXD / TXD transceiver communication indicator
- USB power supply, can choose 5V or 3.3V, set by jumper
- With over current protection, using 500mA self-restore fuse
- Pin definition: DTR, RXD, TX, VCC, CTS, GND
- Pitch: 2.54mm
- Size (L x W): 36 x 18mm