Arduino pro mini ATMega328p board

When your project space is premium, and you need a small permanent solution for your project, Arduino pro-mini is the answer.

It requires less space, and you can solder it permanently on the project board.

It has an ATMega328P microcontroller and works on 3.3 or 5V voltage. You get 14 digital input/output pins, six analog pins, an onboard resonator (oscillator), a reset button, and mounting pin headers. 

The following is the product detail;

1. Arduino Pro mini board
2. ATmega328P microcontroller in SMD packaging.
3. Digital input/output pins - 14
4. PWM pins - 6
5. Analog input pins - 6
6. Support UART, SPI, and I2C communication channels. 
7. Input/output voltage - 3.3 - 5V
8. Current per input/output pin - 40mA
9. Clock speed 16MHz
10. 2KB SRAM, 32KB Flash, 1KB EEPROM

You can have two options for the power source;

1. Use a power source shield.
2. Solder the power source pins on the board.