ADAFRUIT METRO Mini 328 MCU Development Board 2590

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Legislation and Compliance

RoHS Certificate of Compliance

RS Components
RoHS Certificate of Compliance

EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.

Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.

RS definition of RoHS Compliance:

  • The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
  • and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering

The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:

PBB (Polybrominated Biphenyls)0.1%
PBDE ( Polybrominated Diphenyl Ethers)0.1%
Hexavalent Chromium0.1%
DEHP (Bis (2-Ethylhexl) phthalate)0.1%
BBP (Benzyl butyl phthalate)0.1%
DBP (Dibutyl phthalate)0.1%
DIBP (Diisobutyl phthalate)0.1%

The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".

RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.

Compliant Product Details
RS stock number 1245512
Product description ADAFRUIT METRO Mini 328 MCU Development Board 2590
Manufacturer / Brand ADAFRUIT INDUSTRIES
Manufacturer part number 2590

RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK

Statement of Conformity

RS Components
Statement of Conformity

This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.

Compliant Product Details
RS stock number 1245512
Product description ADAFRUIT METRO Mini 328 MCU Development Board 2590
Manufacturer / Brand ADAFRUIT INDUSTRIES
Manufacturer part number 2590

The foregoing information relates to product sold on, or after, the date shown below.


Date Jul 19, 2024

RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132

Product Details

Adafruit METRO ATmega328 Development Boards

Adafruit METRO Mini Development Board with Headers - ATmega328

Adafruit METRO Mini is a derivative of the Arduino UNO board (RS 769-7409) and a scaled down version of the METRO (RS 124-5519). You can find plenty of projects and example code to use and adapt. Running the ATmega328P at 16 MHz with 32 KB of flash and 2 KB of RAM it is perfect for most simple projects. There are 20 GPIO pins including analogue inputs, hardware UART, SPI and I2C, timers and PWM. Logic level is 5 V but it can easily be converted it to 3.3 V.

You can power the METRO Mini with a 6 V dc to 16 V dc PSU or by using the 5 V micro-USB connector. The METRO automagically switches between USB and DC.

Four indicator LEDs for easy debugging.

For projects where the board size is not important and you would prefer to have the headers pre-soldered onto the board there is the METRO board (RS 124-5519).


If you use a Mac or Windows, then install the FTDI VCP drivers from FTDI to make the COM/Serial port show up correctly.

- ATmega328 microcontroller with Optiboot (UNO) Bootloader
- USB Programming and debugging via the well-supported genuine FTDI FT231X
- Input voltage: 6 V dc to 16 V dc (a 9 V dc power supply is recommended)
- 5 V onboard regulator with 150 mA out
- 5 V logic with 3.3 V compatible inputs
- 20 Digital I/O Pins: 6 are also PWM outputs and 6 are also Analogue Inputs
- 32 KB Flash Memory, 0.5 K for bootloader, 31.5 KB available after bootloading
- 16 MHz Clock Speed
- Supplied with 4 rubber bumpers
- 53 x 71 x 13 mm / 2.1" x 2.8" x 0.5”
- Weight: 19 g


Attribute Value
Classification Development Board
Kit Name METRO Mini 328
Technology MCU
Processor Family Name SAM
Processor Part Number ATmega328
Processor Type MCU
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