Arduino Pro Mini Guide for Beginners

Posted by Robert on February 14th, 2021

Arduino Pro Mini 5V is characterized by its small size and is ideal for developing small devices. The connectors are not soldered to the board, allowing it to be connected via the supplied connectors as well as in a hinged assembly.

When working with the board, you may need to solder the legs. A soldering iron, solder, and flux will help.

The Characteristics

Microcontroller: ATmega328
Bit depth: 8 bits
Power supply voltage: 5V
Input voltage (recommended) 5-12V
Digital I/0 outputs: 14 lines (6 of which are PWM)
Analog inputs: 6 (ADC)
Maximum current on I/0: 40mA (for each pin)
FLASH memory: 32Kb (0.5Kb of which are for the loader)
SRAM: 2KB
EEPROM memory: 1KB
Clock frequency: 16 MHz
Length: 33 mm
Width: 18 mm
Weight: 2 g.

Power

The Arduino Pro Mini 5V can be powered from the USB port via the programmer or from an external power supply: a 9V AC/DC adapter, or a 12V AC/DC adapter connected to pins RAW and GND via a power jack (internal lead to RAW, external to GND). Also, power can be connected to the Vcc pin via a 5V stabilizer. The type of power supply is selected automatically.

More about the board

The Arduino Pro Mini comes in two versions:

• Arduino Pro Mini 3.3V - with a supply voltage of 3.3V and a clock frequency of 8MHz;
• Arduino Pro Mini 5V - with a supply voltage of 5V and a clock frequency of 16MHz.

The Arduino Pro Mini 5V is based on the ATmega328 microprocessor. The small size of the board is achieved by the compact arrangement of pins and the absence of a USB port with a converter. The board has 6 pins (BLK, GND, Vcc, RX, Tx, GRN) to connect the programmer.