Adafruit Metro 328 with Headers - ATmega328

Key Features:

• ATmega328 microcontroller with Optiboot (UNO) Bootloader
• A fully assembled and tested microcontroller and physical computing board with through-hole headers attached
• 32KB of flash and 2KB of RAM, running at 16 MHz
• Compatible with "Classic" and "R3" Shields

This is the Adafruit METRO Arduino-Compatible - with headers. The METRO works great with the Arduino IDE, and runs the ATmega328P at 16MHz so it is shape and pin-compatible with Arduino UNO R3 shields and boards. You can use this with the Arduino IDE (both desktop and cloud version) by selecting ' Arduino UNO' in the Boards menu. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. METRO is the culmination of years of playing with AVRs: it' s a development board that is easy to use and is hacker friendly.

Power the METRO with 7-9V polarity protected DC or the micro USB connector to any 5V USB source. The 2.1 mm DC jack has an on/off switch next to it so you can turn off your setup easily. The METRO will automagically switch between USB and DC.

Item Specifics
Optiboot bootloader pre-installed
USB Programming and debugging via well-supported genuine CP2104
Input voltage: 7-9V (a 9VDC power supply is recommended)
5V regulator can supply peak ~800mA as long as the die temp of the regulator does not exceed 150*C
3.3V regulator can supply peak ~150mA as long as the die temp of the regulator does not exceed 150*C
5V logic with 3.3V compatible inputs, can be converted to 3.3V logic operation
20 GPIO: 6 - PWM outputs & 6 - Analog Inputs
6-pin ICSP Header
32KB Flash Memory - 0.5K for bootloader, 31.5KB available after bootloading
Adafruit Black PCB with gold plate on pads
Size: 53mm x 71mm / 2.1" x 2.8"
Height (w/ barrel jack): 13mm / 0.5"
Weight: 19g
Arduino IDE compatible