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Arduino USB v2.0 Changed: USB replaces RS-232 interface, Improved: Arduino can be powered from host Arduino Extreme [1] ATmega8 [52] 16 MHz Arduino 81.3 mm × 53.3 mm [ 3.2 in × 2.1 in ] USB The Arduino Extreme uses many more surface mount components than previous USB Arduino boards and comes with female pin headers. [1]
FTDI US232R : USB to RS-232 cable. A USB-to-serial adapter or simply USB adapter is a type of protocol converter that is used for converting USB data signals to and from serial communications standards (serial ports). Most commonly the USB data signals are converted to either RS-232, RS-485, RS-422, or TTL-level UART serial data.
The first board labelled "Arduino". Arduino USB [45] Arduino Yes ATmega8 [44] 16 MHz Arduino 3.2 in × 2.1 in [ 81.3 mm × 53.3 mm ] USB FTDI FT232BM Arduino USB v2.0 Changed: USB replaces RS-232 interface, Improved: Arduino can be powered from host Arduino Extreme [45] Arduino Yes ATmega8 [44] 16 MHz Arduino
Early arduino boards used the FTDI USB-to-UART serial chip and an ATmega168. [10] The Uno differed from all preceding boards by featuring the ATmega328P microcontroller and an ATmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter. In June 2023, Arduino released two new flavors of the Uno; R4 Minima and R4 Wifi.
Some serial Arduino boards contain a level shifter circuit to convert between RS-232 logic levels and transistor–transistor logic level signals. Current Arduino boards are programmed via Universal Serial Bus (USB), implemented using USB-to-serial adapter chips such as the FTDI FT232.
FTDI TTL-232RG: USB to UART cable FTDI FT232RL: USB to UART IC (in SSOP package) Internal die of FTDI FT232RL chip. FTDI was founded on 13 March 1992 [3] by its current CEO, Fred Dart (whose initials happen to be "FTD"). The company is an indirect descendant of Computer Design Concepts Ltd, a former semiconductor technology startup also founded ...