Adafruit Metro Mini 328 - 5V 16MHz SKU: 18951
Adafruit Metro Mini 328 – 5V 16MHz
$14.95 USD
Tiny breadboard-friendly UNO-compatible development board.
In stock
Description
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!
More Info
Weight | 0.007 kg |
---|---|
Dimensions | 8 × 6 × 0.3 cm |
Ecosystem |
Only logged in customers who have purchased this product may leave a review.
Related products
-
Arduino Experimenters Kit (without Arduino)
SKU: ARDX-NA$60.00 USDAlready have an Arduino, but not sure what to do with it? Add it to our Solarbotics edition of the Arduino Experimenter's Kit!
In stock
Add to cart -
Sparkfun Pro Mini 328 – Compatible with Arduino – 3.3V/8MHz
SKU: 50720This is a 3.3V Arduino running the 8MHz bootloader, in a very small package - a Mini Arduino, you might say!$15.29 USDIn stock
Add to cart -
Arduino Starter Bundle – Basic
SKU: 28935This kit is basically the same as the Basic Freeduino Starter Bundle, but it includes the Arduino Uno, which requires no extra soldering. It is a great way to get started on using Arduinos.$59.71 USDIn stock
Add to cart -
Adafruit Wave Shield
SKU: 18955Sometimes a gentle "beep" and "boop" isn't enough from a microcontroller. The Adafruit Wave Shield adds these audio capabilities to your Freeduino SB / Arduino!$23.45 USDOut of stock
Read more -
Solarbotics Photopopper Photovore V5.0
SKU: K PPThis new version of the Photopopper is still a solar-powered, light-seeking, obstacle-avoiding robot, but now with updated electronics & gold trim that make it twice as fast!$35.95 USDOut of stock
Read more
Reviews
There are no reviews yet.