Adafruit Metro Mini 328 - 5V 16MHz

18951

14.95 USD
Qty
Price
1
$14.95 ea.

Tiny breadboard-friendly UNO-compatible development board.


Description [Hide]

We use the ATmega328 for a lot of projects. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When we need to go small, we use a Pro Trinket 3V or 5V, but if you want to have USB-to-Serial built in, we reach for an Adafruit METRO Mini.

METRO Mini is the culmination of years of playing with AVRs: we wanted to make a tiny, breadboard-friendly development board that is easy to use and is hacker friendly. Metro Mini can be programmed with the Arduino IDE (select 'UNO' in the boards dropdown)

  • ATmega328 brains - This popular chip has 32KB of flash (1/2 K is reserved for the bootloader), 2KB of RAM, clocked at 16MHz
  • Power the METRO Mini with 6-16V polarity protected on the Vin pin, or plug the micro USB connector to any 5V USB source.
  • METRO has 20 GPIO pins, 6 of which are Analog in as well, and 2 of which are reserved for the USB-serial converter. There's also 6 PWMs available on 3 timers (1 x 16-bit, 2 x 8-bit). There's a hardware SPI port, hardware I2C port and hardware UART to USB.
  • GPIO Logic level is 5V but by cutting and soldering closed a jumper on the bottom, you can easily convert it to 3.3V logic
  • 5V onboard regulator with 150mA out, 3.3V 50mA available via FTDI chip
  • USB to Serial converter, there's a genuine FTDI hardware USB to Serial converter that can be used by any computer to listen/send data to the METRO, and can also be used to launch and update code via the bootloader
  • Four indicator LEDs, on the top of the PCB, for easy debugging. One green power LED, two RX/TX LEDs for the UART, and a red LED connected to pin PB5 / digital #13
  • Easy reprogramming, comes pre-loaded with the Optiboot bootloader
  • Beautiful styling by PaintYourDragon and Bruce Yan, in Adafruit Black with gold plated pads.

The Metro Mini comes as a fully assembled and tested board, with bootloader burned in and also a stick of 0.1" header. Some light soldering is required if you'd like to plug it into a breadboard, or you can solder wires or header directly to the breakout pads. Once headers are installed they can be fitted into 0.6" wide sockets.

Specifications

  • ATmega328 microcontroller with Optiboot (UNO) Bootloader
  • USB Programming and debugging via the well-supported genuine FTDI FT231X
  • Input voltage (Vin): 6-16V (a 9VDC power supply is recommended)
  • 5V logic with 3.3V compatible inputs, can be converted to 3.3V logic operation
  • 20 Digital I/O Pins: 6 are also PWM outputs and 6 are also Analog Inputs
  • 32KB Flash Memory - 0.5K for bootloader, 31.5KB available after bootloading
  • 16MHz Clock Speed
  • Adafruit Black PCB with gold plate on pads
  • 18mm x 44mm x 4mm / 0.7" x 1.7" x 0.2"
  • Weight: 3g
  • Derivative of "Arduino UNO R3 Reference design" 
  • Open source hardware files on GitHub!

You Might Also Like [Hide]

50725

Arduino Pro Mini 328 - 5V/16MHz

You need to wedge an Arduino into a really tiny spot? Simple - just use a SMD '328 IC. Oh... you want a reset, and voltage regulator too? Why didn't you say so!

$9.95 USD

28922

The Solarbotics SketchBoard

A fully assembled surface mount Arduino-compatible.

$17.50 USD

21035

Breadboard Jumper Wire Bundle

This 70-piece flexible wire jumper kit is sure to replace your old-style solid-wire jumpers. These are more flexible, robust, and easy to use!

$6.00 USD

KARDW

Solarbotics Ardweeny

Looking to build the smallest, handiest, bread-board friendly Arduino-compatible? The Ardweeny fits on the back of the included ATmega328P, taking up no more valuable breadboard space than the microcontroller itself!

$9.95 USD

BAMPPK

The Mighty Mini Bundle

The Mighty Mini Bundle is basically an Arduino in its prime that has exercised... a lot! Not only is it skinny but it has the rated regulated power of 5 ordinary Arduinos (5 Amps) to back it up.

$31.00 USD

28931

Freeduino Starter Bundle - Ultimate

Ready to dive head-first into the waters of Freeduino Land (which is actually also known as "The Fabulous Republic of Arduino")? This comprehensive bundle is what you're looking for.

$91.79 USD

28930

Freeduino Starter Bundle - Basic

If you just want to dip your toe in the waters of FreeduinoLand (which is actually also known as "The Fabulous Republic of Arduino"), this basic bundle is what you're looking for.

$56.60 USD

K SV-Atmel

Solarbotics Sumovore Atmel Brainboard V2.0

This Sumovore add-on brainboard replaces the standard discrete logic brain with a powerful, programmable microcontroller! (Requires host product)

$20.95 USD

R4.3M

4.3M Resistor

5% accuracy 1/4 watt resistors to get you started with your BEAM experiments.

$0.20 USD

PIC16F877A

Microchip PIC16F877A

This is the Microchip PIC16F877A microcontroller that is used in our K SV-PIC Brainboard add-on.

$7.95 USD

Currency


Login

Email:

Password:

Remember Me

Forgot Your Password?

Don't Have an Account?
Sign Up!