The Arduino Pro Mini is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, an on-board resonator, a reset button, and holes for mounting pin headers. A six pin header can be connected to an TTL2USB board to provide USB power and communication to the board.The Arduino Pro Mini is intended for semi-permanent installation in objects or exhibitions. The board comes without pre-mounted headers, allowing the use of various types of connectors or direct soldering of wires. The pin layout is compatible with the Arduino Mini.

Specifications:

• Microcontroller     ATmega328P
• Operating Voltage     5V
• Input Voltage     7-9 V
• Digital I/O Pins     12 (of which 5 provide PWM output)
• Analog Input Pins     8
• DC Current per I/O Pin     40 mA
• Flash Memory     32 KB (of which 2 KB used by bootloader)
• SRAM     2 KB
• EEPROM     1 KB
• Clock Speed     16 MHz

1pc * Arduino Pro Mini 5V 16Mhz