{"product_id":"adafruit-metro-mini-328-5v-16mhz","title":"Adafruit Metro Mini 328 - 5V 16MHz","description":"\u003cp\u003eMETRO Mini is the culmination of years of playing with AVRs: a tiny, breadboard-friendly development board that is easy to use and is hacker friendly.\u003c\/p\u003e\n\u003cp\u003eThey sure love the ATmega328 at Adafruit, the processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When you need to go small, you can use a \u003ca href=\"https:\/\/shop.pimoroni.com\/products\/adafruit-pro-trinket\"\u003ePro Trinket 3V or 5V\u003c\/a\u003e, but if you want to have USB-to-Serial built in, reach for an \u003cstrong\u003eAdafruit METRO Mini\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eMetro Mini can be programmed with the Arduino IDE (select 'UNO' in the boards dropdown)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eATmega328 brains\u003c\/strong\u003e - This popular chip has 32KB of flash (1\/2 K is reserved for the bootloader), 2KB of RAM, clocked at 16MHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower the METRO\u003c\/strong\u003e \u003cstrong\u003eMini \u003c\/strong\u003ewith 6-16V polarity protected on the Vin pin, or plug the micro USB connector to any 5V USB source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMETRO has 20 GPIO pins\u003c\/strong\u003e, 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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGPIO Logic level is 5V\u003c\/strong\u003e but by cutting and soldering closed a jumper on the bottom, you can easily convert it to 3.3V logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V onboard regulator\u003c\/strong\u003e with 150mA out, 3.3V 50mA available via FTDI chip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB to Serial converter\u003c\/strong\u003e, 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour indicator LEDs\u003c\/strong\u003e, 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy reprogramming\u003c\/strong\u003e, comes pre-loaded with the \u003ca href=\"https:\/\/github.com\/Optiboot\/optiboot\" target=\"_blank\"\u003eOptiboot bootloader\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeautiful styling\u003c\/strong\u003e by PaintYourDragon and Bruce Yan, in Adafruit Black with gold plated pads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDetailed specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eATmega328 microcontroller with Optiboot (UNO) Bootloader\u003c\/li\u003e\n\u003cli\u003eUSB Programming and debugging via the well-supported genuine FTDI FT231X\u003c\/li\u003e\n\u003cli\u003eInput voltage (Vin): 6-16V (a 9VDC power supply is recommended)\u003c\/li\u003e\n\u003cli\u003e5V logic with 3.3V compatible inputs, can be converted to 3.3V logic operation\u003c\/li\u003e\n\u003cli\u003e20 Digital I\/O Pins: 6 are also PWM outputs and 6 are also Analog Inputs\u003c\/li\u003e\n\u003cli\u003e32KB Flash Memory - 0.5K for bootloader, 31.5KB available after bootloading\u003c\/li\u003e\n\u003cli\u003e16MHz Clock Speed\u003c\/li\u003e\n\u003cli\u003eAdafruit Black PCB with gold plate on pads\u003c\/li\u003e\n\u003cli\u003e18mm x 44mm x 4mm \/ 0.7\" x 1.7\" x 0.2\"\u003c\/li\u003e\n\u003cli\u003eWeight: 3g\u003c\/li\u003e\n\u003cli\u003eDerivative of \u003ca href=\"http:\/\/www.arduino.cc\/en\/Main\/ArduinoBoardUno\" target=\"_blank\"\u003e\"Arduino UNO R3 Reference design\"\u003c\/a\u003e \u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/Adafruit-METRO-328-PCB\" target=\"_blank\"\u003eOpen source hardware files on github!\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":3590453249,"sku":"ADA2590","price":14.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/2590.jpg?v=1434032876","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-metro-mini-328-5v-16mhz","provider":"Pimoroni Ltd","version":"1.0","type":"link"}