Arduino / Compatibles

The Adafruit Trinket M0 may be small, but do not be fooled by its size! It's a tiny microcontroller board, built around the Atmel ATSAMD21, a little chip with a lot of power. We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give up your...

Make your Arduino-based project tiny and with the Adafruit METRO Mini! The METRO Mini works great with the Arduino IDE, and runs the ATmega328P at 16MHz so it is pin-compatible with Arduino UNO R3 - note you won't be able to plug in shields, but great for use with breadboards. You can use this with the Arduino IDE (both desktop and cloud version) by selecting...

The Adafruit Gemma M0 is a super small microcontroller board, with just enough built-in to create many simple projects. It may look small and cute: round, about the size of a quarter, with friendly alligator-clip sew pads. But do not be fooled! The Gemma M0 is incredibly powerful! We've taken the same form factor we used for the original ATtiny85-based Gemma and gave...

One of our star development boards is the Adafruit METRO Mini 328, an excellent lil fellow that lets you make your Arduino-based project tiny. Recently we had to redesign this board to move from the obsolete CP2104 to the available CP2102N and one thing led to another and before you know it we made a completely refreshed design: the Adafruit METRO Mini 328 V2. The V2...

Deprecation Warning: The Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Trinket so that people can maintain some older projects, we no longer recommend it. Please check out the Trinket M0. It has built-in USB, more capabilities, and is comparable in price! Trinket may...

Deprecation Warning: The Pro Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Pro Trinket so that people can maintain some older projets, we no longer recommend it. Please check out the Metro Mini (ATmega328 @ 5V 16 MHz), ItsyBitsy 32u4 5V 16MHz, ItsyBitsy 32u4 @ 3.3V...

What's smaller than a Feather but larger than a Trinket? It's an ItsyBitsy! Small, powerful, Arduino-compatible - this microcontroller board is perfect when you want something very compact, but still with a bunch of pins. ItsyBitsy is only 1.4" long by 0.7" wide, but has 6 power pins, 6 analog & digital pins and 17 digital pins. It packs much of the same...

This is the Adafruit METRO Arduino-Compatible - with headers. It's a fully assembled and tested microcontroller and physical computing board with through-hole headers attached. If you don't want a Metro with the headers attached for super-slimness, check out our Metro without Headers. The METRO works great with the Arduino IDE, and runs the ATmega328P at 16MHz so it...

Long gone are the days of parallel ports and serial ports. Now the USB port reigns supreme! But USB is hard, and you just want to transfer your every-day serial data from a microcontroller to computer. What now? Enter the Adafruit CP2102N Friend! The CP2102N is very similar to the CP2104. Despite having a name with a lower number, its actually considered the...

What's smaller than a Feather but larger than a Trinket? It's an Adafruit ItsyBitsy M0 Express! Small, powerful, with a rockin' ATSAMD21 Cortex M0 processor running at 48 MHz - this microcontroller board is perfect when you want something very compact, but still with a bunch of pins. ItsyBitsy M0 Express is only 1.4" long by 0.7" wide, but has 6 power pins, 23...

FLORA is Adafruit's fully-featured wearable electronics platform. It's a round, sewable, Arduino-compatible microcontroller designed to empower amazing wearables projects.FLORA comes with Adafruit's support, tutorials and projects. Check out dozens of FLORA tutorials on the Adafruit Learning System, with more added all the time! The FLORA is small (1.75" diameter,...

It's half USB Key, half Adafruit Trinket...it's Neo Trinkey, the circuit board with a Trinket M0 heart and four RGB NeoPixels for customizable glow. We were inspired by some USB key flashlight boards that would turn any battery pack into an LED torch. So we thought, hey what if we made something like that but with fully programmable color NeoPixels? And this is what...

Metro is our series of microcontroller boards for use with the Arduino IDE. This new Metro M0 Express board looks a whole lot like our original Metro 328, but with a huge upgrade. Instead of the ATmega328, this Metro features a ATSAMD21G18 chip, an ARM Cortex M0+. At the Metro M0's heart is an ATSAMD21G18 ARM Cortex M0 processor, clocked at 48 MHz and at 3.3V logic,...

Long gone are the days of parallel ports and serial ports. Now the USB port reigns supreme! But USB is hard, and you just want to transfer your everyday serial data from a microcontroller to computer. What now? Enter the Adafruit CH9102F Friend, a version of our popular USB-Serial 'friend' breakouts that uses the affordable (and available) CH9102F - a 'near...

Are you ready? Really ready? Cause here comes the fastest, most powerful Metro ever. The Adafruit Metro M4 featuring the Microchip ATSAMD51. This Metro is like a bullet train, with it's 120MHz Cortex M4 with floating point support. Your code will zig and zag and zoom, and with a bunch of extra peripherals for support, this will for sure be your favorite new chipset....

Are you ready? Really ready? Cause here comes the Adafruit Grand Central featuring the Microchip ATSAMD51. This dev board is so big, it's not named after a Metro train, it's a whole freakin' station! This board is like a freight train, with its 120MHz Cortex M4 with floating point support. Your code will zig and zag and zoom, and with a bunch of extra peripherals for...

Just about all electronics use TTL serial for debugging, bootloading, programming, serial output, etc. But it's rare for a computer to have a serial port anymore. This is a USB to TTL serial cable, with a FTDI FT232RL usb/serial chip embedded in the head. It has a 6-pin socket at the end with 5V power and ground, as well as RX, TX, RTS and CTS at 3V logic levels....

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, but when size isn't as much of a concern, we reach for an Adafruit METRO. New!...

Deprecation Warning: The Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Trinket so that people can maintain some older projects, we no longer recommend it. Please check out the Trinket M0. It has built-in USB, more capabilities, and is comparable in price! Trinket may...

Long gone are the days of parallel ports and serial ports. Now the USB port reigns supreme! But USB is hard, and you just want to transfer your every-day serial data from a microcontroller to computer. What now? Enter the FTDI Friend! The FTDI Friend is a tweaked out FTDI FT232RL chip adapter. Sure, like the well-known FTDI cable, it can provide power to your project...

Deprecation Warning: The Pro Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Pro Trinket so that people can maintain some older projets, we no longer recommend it. Please check out the Metro Mini (ATmega328 @ 5V 16 MHz), ItsyBitsy 32u4 5V 16MHz, ItsyBitsy 32u4 @ 3.3V...

Deprecation Warning: The Gemma bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Gemma so that people can maintain some older projects, we no longer recommend it. Please check out the Gemma M0. It has built-in USB, more capabilities, and is comparable in price! Love FLORA but want...

Interested in making neat stuff with an Arduino-compatible board but not sure where to start? This kit includes all the pieces needed to complete over 20 different circuit and projects. Basically everything you need to be playing within minutes of its arrival. No soldering required, works with Mac, Windows and Linux! This item is the same exact kit as...

What's Metro shaped and has an ESP32-S2 WiFi module? What has a STEMMA QT connector for I2C devices, and a Lipoly charger circuit? What has your favorite Espressif WiFi microcontroller and lots of memory for your next IoT project? That's right - its the new Adafruit Metro ESP32-S2! With native USB and a load of PSRAM this board is perfect for use with CircuitPython...

Just about all electronics use a UART serial port with RX and TX pins for debugging, bootloading, programming, serial output, etc. But it's rare for a computer to have a serial port anymore. Thus, a serial cable is an essential part of any electrical engineer's toolkit. This is a USB C to TTL serial cable with an FTDI FT232R usb/serial chip embedded in the head. It...

Just about all electronics use a UART serial port with RX and TX pins for debugging, bootloading, programming, serial output, etc. But it's rare for a computer to have a serial port anymore. Thus, a serial cable is an essential part of any electrical engineer's toolkit. This is a USB C to TTL serial cable with an FTDI FT232R usb/serial chip embedded in the head. It...

The Seeeduino XIAO Expansion Board is a great add-on board with a little-bit-of-everything. It works wonderfully with our QT Py boards so we're stocking it for folks to plug in their SAMD21 QT Py or RP2040 QT Py. It enables prototyping in an easy and quick way and with so many hardware add-ons, you can quickly explore near-infinite possibilities of Arduino and...

Never hack without a helmet, now you can protect your cute little Adafruit Metro Mini with this chic new Zebra Byte Case! This laser-cut DIY plastic enclosure is designed to perfectly frame your tiny microcontroller and firmly lock it in with high quality stainless steel screws at each corner. While this case leaves absolutely no wiggle room, there are still a few...

Piunora by Diode Delights is a compact, easy-to-use development board for electronics prototyping with Linux. It has a familiar form factor, legible pin labels, and a design that’s well suited to space-constrained applications. As a carrier board for the Raspberry Pi Compute Module 4 (CM4), Piunora is essentially a tiny version of the Raspberry Pi 4 Single...

Piunora by Diode Delights is a compact, easy-to-use development board for electronics prototyping with Linux. It has a familiar form factor, legible pin labels, and a design that’s well suited to space-constrained applications. As a carrier board for the Raspberry Pi Compute Module 4 (CM4), Piunora is essentially a tiny version of the Raspberry Pi 4 Single...

The new and improved Programmer Shield is essentially a USB-JTAG converter that gives advanced users complete access to the Photon's memory space. It supports openOCD and the WICED SDK, and is built around the FT2232H high speed USB FIFO. Unlike the previous Programmer Shield, it is fully standalone and requires no third-party programmers. In addition to providing a...

Give your next project a lift with AirLift - our witty name for the ESP32 co-processor that graces this Metro M4. You already know about the Adafruit Metro M4 featuring the Microchip ATSAMD51, with it's 120MHz Cortex M4 with floating point support. With a train-load of FLASH and RAM, your code will be fast and roomy. And what better way to improve it than to add...

Are you ready? Really ready? Cause here comes the Adafruit Grand Central featuring the Microchip ATSAMD51. This dev board is so big, it's not named after a Metro train, it's a whole freakin' station! This board is like a freight train, with its 120MHz Cortex M4 with floating point support. Your code will zig and zag and zoom, and with a bunch of extra peripherals for...

Interested in making neat stuff with an Arduino-compatible board but not sure where to start? This kit includes all the pieces needed to complete over 20 different circuit and projects. Basically everything you need to be playing within minutes of its arrival. No soldering required, works with Mac, Windows and Linux! New! As of March 28, 2018 we've done a big refresh...

What's smaller than a Feather but larger than a Trinket? It's an Itsy Bitsy! Small, powerful, Arduino-compatible - this microcontroller board is perfect when you want something very compact, but still with a bunch of pins. Itsy Bitsy is only 1.4" long by 0.7" wide, but has 6 power pins, 6 analog & digital pins and 17 digital pins. It packs much of the same...

Heard about Arduino IDE-compatibles but not sure how to start? The Adafruit Metro is an ATmega328-based (like a lot of our own products) development board. Since it is shaped the same, and code/shield-compatible with the Arduino UNO R3 design, our Adafruit Metro is easy to use and hacker friendly and this is the perfect beginner kit for learning how to use the...

Coming soon! Sign up to be notified when these are in stock! Get ready for our fastest Metro ever - the NXP iMX RT1011 microcontroller powers this board with a 500 MHz ARM Cortex M7 processor. There's 4 MB of execute-in-place QSPI for firmware + disk storage and 128KB of SRAM in-chip We're still working on the design but here's some stuff you can look forward to:...

We're big fans of the Intel® Edison Compute Module but the connector's not generic like everyday header, and can be a bit difficult to find. No longer! This 70-pin receptacle header for the Intel Edison connects to the Edison Compute Module and allows breakout boards to be added more easily. If you're in the Edison block business, this is for you It's a tiny...

We're no longer selling this pack of Trinket 3V+5V, we recommend our Trinket M0 which has better USB support, way faster processor, a ton more memory and CircuitPython support! Be the life of your (hackerspace) party when you show up with this six-pack! Get 6 Trinkets at 12% off - comes with 3 x 3V Trinkets, and 3 x 5V Trinkets. As of October 12th, 2015 the 6-pack...

We're no longer selling this pack of Pro Trinket 3V+5V, we recommend our Metro Mini (5V 328P with USB-Serial Converter), Feather 328P (3.3V 328P with USB-Serial and LiPo charger), ItsyBitsy 32u4 (Available in both 3.3V and 5V) and the ItsyBitsy M0. The Metro Mini and Feather 328p both use the same ATmega328P chip, but come with a real USB-serial converter chip. The...

If you've ever struggled to use a solderless breadboard with an Arduino, you understand how frustrating it can be! This clone acts just like an Arduino, and works with the latest Arduino software. For many projects it can even be preferable! The kit includes all parts necessary, the assembly is straightforward and well documented. Since this design doesn't include a...

The Intel® Edison R2 Kit for Arduino is a compact computing platform that's small by design so you can easily integrate it into projects. It's primarily designed for "Internet of Things" projects and is pretty powerful for its small size. The Edison has a bunch of features that makes it appealing for makers of all skill levels. It uses a 22 nm Intel SoC that...

Introducing the MENTA, a portable minty Arduino-compatible project that fits into a common mint tin. We took our super popular Boarduino series, and wrapped it with a prototyping area into a rounded PCB that slots directly into an Altoids-sized metal tin. We included everything you expect to jump-start your project: DC power adapter jack with polarity protection....

Galileo 2 is a microcontroller board based on the Intel® Quark SoC X1000 Application Processor, a 32-bit Intel Pentium-class system on a chip (datasheet). It’s the second generation of the board which is based on Intel® architecture designed to be hardware and software pin-compatible with Arduino shields designed for the Uno R3. This is the Generation 2...

The Intel® Edison is a compact computing platform that's small by design so you can easily integrate it into projects. It's primarily designed for "Internet of Things" projects and is pretty powerful for its small size. The Edison has a bunch of features that makes it appealing for makers of all skill levels. It uses a 22 nm Intel SoC that includes a dual core,...

Note: These use genuine FTDI chips, either we purchase them or they are manufactured to our specifications with the requirement of genuine FTDI chips 10/22/14 - read more. If you've ever struggled to use a solderless breadboard with an Arduino, you understand how frustrating it can be! This development board acts just like an Arduino, and works with the latest...

Galileo is a microcontroller board based on the Intel® Quark SoC X1000 Application Processor, a 32-bit Intel Pentium-class system on a chip (datasheet). It’s the first board based on Intel® architecture designed to be hardware and software pin-compatible with Arduino shields designed for the Uno R3. Digital pins 0 to 13 (and the adjacent AREF and GND...

Would you like to add powerful and easy-to-use Bluetooth Low Energy to your robot, art or other electronics project? Heck yeah! With BLE now included in modern smart phones and tablets, its fun to add wireless connectivity. So what you really need is the new Adafruit Bluefruit LE Micro - it's an Atmega32u4 chip (same as used as in the Adafruit Flora or Arduino...

The LightBlue Bean+ is a low energy Bluetooth Arduino microcontroller that is programmed wirelessly and is perfect for your smartphone controlled projects! With Bean, you can program wirelessly from any of your devices. Using Bluetooth 4.0, this Arduino-compatible board is a serial protocol that allows the LBM313 Bluetooth Low Energy module and Atmega328p to...

The Intel® Edison is a compact computing platform that's small by design so you can easily integrate it into projects. It's primarily designed for "Internet of Things" projects and is pretty powerful for its small size. The Edison has a bunch of features that makes it appealing for makers of all skill levels. It uses a 22 nm Intel SoC that includes a dual core,...

What do you get when you combine an Adafruit classic with geniuses at Arduino? The Arduino GEMMA! It's a tiny wearable platform board with a lot of might in a 1" diameter package. Powered by a Attiny85 and programmable with an Arduino IDE over USB, you'll be able to realize any wearable project. This is a collaboration with Arduino.cc and Adafruit. This product is...

The Particle Shield Shield converts the footprint and pins of your Photon into that of an Arduino, allowing for use of existing Arduino shields and accessories. This shield converts the pin mapping of the Photon to the Arduino pin layout and provides a voltage translation of 3.3V to/from 5V. Note that Arduino libraries are not necessarily going to work without some...

Discontinued - you can grab Adafruit CP2102N Friend - USB to Serial Converter instead! Long gone are the days of parallel ports and serial ports. Now the USB port reigns supreme! But USB is hard, and you just want to transfer your every-day serial data from a microcontroller to computer. What now? Enter the Adafruit CP2104 Friend! This is a high-quality CP2104...

The Cloud from Seeeduino is a microcontroller based around the Dragino WiFi IoT module HE and the classic ATmega32u4. This board is Arduino compatible with built-in ethernet and WiFi support. There's also a USB-A port that makes it good for designing prototypes that need network connection. You can use this as a compatible board the now-discontinued Arduino Yun. The...

Regulate the power to a variety of electronics with this four Relay Shield for Photon! The Relay Shield allows you to control any normal outlet or high voltage product from anywhere. The shield comes with four relays that are rated at a max of 220V @10Amp allowing you to control any electric appliance rated at under 2000 Watts. Note that you *will* need a DC adapter...

The Particle Power Shield is the best way to—you guessed it—provide power to your mobile Particle projects. Based around the MCP73871 battery management controller, this shield allows you to simultaneously power a Photon and charge a connected Li-Ion or Li-Po battery. You'll also be able to monitor battery levels using the Photon itself, which makes the...

The Arduino 101 is simple. It's a board that combines the universal appeal of Arduino with the latest technologies - like the Intel Curie module, Bluetooth LE capabilities, and a 6-axis accelerometer/gyro. The Arduino 101 contains two tiny cores, an x86(Quark), and a 32-bit ARC architecture core, both clocked at 32MHz. The board also comes with 14 digital...

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, but when size isn't as much of a concern, and a USB-serial converter is required, we reach for...