All Products

SKU: AF-123

A pre-programmed ATmega328P chip with the Adafruit 'ADAboot' bootloader, ready to drop into an Arduino Uno, Duemilanove, Diecimila, or NG board. Use it to replace a damaged chip or build your own Arduino-compatible project on a breadboard or custom PCB. The ADAboot bootloader is compatible with ...

SKU: LB-PT9012

This ATmega328P-PU microcontroller comes in a 28-pin DIP package with the Arduino Uno Optiboot bootloader pre-loaded. Drop it into a breadboard or custom PCB and program it directly from the Arduino IDE — no Arduino board required. To get started, you'll need an external 16 MHz crystal or resona...

SKU: SF-DEV-10524

The name says it all on this one. An ATmega328 in DIP package, pre-loaded with the Arduino Optiboot (Uno 16MHz) Bootloader. This will allow you to use Arduino code in your custom embedded project without having to use an actual Arduino board. To get this chip working with Arduino IDE, you wi...

SKU: SF-DEV-15164

The SparkFun Qwiic OpenLog is an I²C-based data logger that stores serial data to a microSD card. Based on the popular OpenLog, this version replaces the serial interface with I²C and Qwiic connectors, allowing you to daisy-chain multiple sensors and log data without occupying your serial port. ...

SKU: AF-462

Turn any Arduino into an AVR chip programmer with this shield kit. Designed for burning Arduino bootloaders onto blank ATmega328P chips, it can also be configured as a standalone AVR ISP programmer that works without a computer — program blank chips up to 10× faster with audio feedback from the b...

SKU: AF-2488

The Adafruit METRO 328 is a fully assembled, Arduino UNO R3-compatible development board powered by the ATmega328P running at 16 MHz. It's shape and pin-compatible with Arduino UNO R3 shields, and works directly with the Arduino IDE by selecting "Arduino UNO" in the Boards menu. This version come...

SKU: DF-DFR0159

The 5V DFduino Pro Mini V1.3(Arduino Pro Mini Compatible) is a microcontroller board based on the ATmega328.It is a 5V DFduino running the 16MHz bootloader (select 'Arduino Duemilanove w/ 328' within the Arduino software). It is an advance version of offical Arduino Pro Mini. The DFRd...

SKU: AF-50

We sure love the ATmega328 here at Adafruit, and we use them a lot for our own 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 Metro Mini or a Trinket M0,...

SKU: EC-AAM328AT

This is a ATmega328 IC in DIP package, pre-loaded with the Arduino Optiboot (Atmega328 16MHz) Bootloader. This will allow you to use Arduino code in your custom embedded project without having to use an actual Arduino board.To get this chip works, you will need an external 16MHz crystal or resona...

SKU: SF-COM-11441

A 4-digit 7-segment display with a built-in ATmega328 microcontroller, controllable via Serial TTL, SPI, or I²C — no complex wiring or multiplexing required. Each segment, decimal point, apostrophe, and colon can be individually controlled. The ATmega328 comes pre-loaded with the Arduino bootload...

SKU: EC-CDD10240D

The devDuino Relay 1 Node V1.0 is a compact Arduino-compatible microcontroller board with a built-in mains power supply (110–220 V AC), a 10 A relay, and an nRF24L01+ wireless transceiver. It is designed for building wireless home automation networks with support for over-the-air (OTA) firmware u...

SKU: AF-193

This budget pack is an optimized collection of parts and pieces to experiment with Adafruit Metro 328 and the Arduino IDE at home, school or work. Great for students and those that want to get their feet wet, no soldering required!Includes the Adafruit Metro 328 with thru-hole heade...

SKU: AF-2590

The Adafruit Metro Mini 328 packs the same ATmega328P power as a full-sized Metro into a tiny breadboard-friendly form factor. Running at 16 MHz with 5V logic, it's pin-compatible with Arduino UNO R3 and works with the Arduino IDE by selecting "Arduino UNO" in the Boards menu. For the latest revi...

SKU: SF-COM-11442

The SparkFun 7-Segment Serial Display combines a 4-digit 7-segment LED display with an ATmega328 microcontroller, allowing you to control every segment using just a few serial lines. It supports three communication interfaces — Serial TTL, SPI, and I²C — making it easy to integrate into a wide ra...

SKU: AF-2010

Note: The Pro Trinket's bit-bang USB technique is a legacy approach that may not work reliably with modern operating systems. For new projects, consider an ItsyBitsy or Metro Mini board with native USB support at a comparable price. The Adafruit Pro Trinket 3V is a compact ATmega328P-based mic...

SKU: SF-COM-11629

A smart 4-digit 7-segment display that combines a classic white LED display with an onboard ATmega328 microcontroller. Instead of wiring up dozens of pins, you control the entire display over Serial TTL, SPI, or I2C — using just a few connections. The ATmega328 comes pre-loaded with the Arduino ...

SKU: DF-DFR0216-2 · MPN: DFR0216-2

This compact DFRobot microcontroller bundle is designed for learning, prototyping and physical computing projects. The DFRduino Uno V3.0 is fully compatible with Arduino UNO R3 and the Arduino IDE open-source development environment, which uses the Processing / Wiring language.The board is based ...

SKU: PI-A000073

The board everybody gets started with, with the ATmega328 (SMD). It has 14 digital IO pins (6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, and more. The Arduino Uno SMD R3 is a microcontroller board based on the ATmeg...

SKU: EC-MCA03328M

This Pro Mini version is 100% compatible with the original Arduino Pro mini. We add two analog IO - A6, A7 , and Power Input side add auto recovery insurance, and be allowed USB and Power Supply at same time.It is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input...

SKU: SF-DEV-13342

The LilyPad Arduino 328 Main Board is an Arduino-programmed microcontroller designed to be easily integrated into e-textiles and wearable projects. It offers the same functionality you find in other Arduino boards, in a lightweight, round package designed to minimize snagging and profile, with wi...