# Adafruit Learning System The Adafruit Learning System provides over 3000 free guides covering electronics, CircuitPython, Arduino, 3D printing, and more. - For the complete listing of all guides and pages, see [llms-full.txt](/llms-full.txt) ## Accessing Content - Add `.md` to any guide or page URL for markdown output - Example: https://learn.adafruit.com/welcome-to-circuitpython.md - Add `?view=all` to any guide URL to get all pages in one response - Example: https://learn.adafruit.com/welcome-to-circuitpython.md?view=all - Category pages also support `.md` to list guides in that category - Example: https://learn.adafruit.com/category/circuitpython.md ## Categories ### 3D Printing - [3D Printing](https://learn.adafruit.com/categories/3d-printing.md) ### AdaBox If you're here, it's because you were given the gift of electronics with an AdaBox! You are a beginner who is getting started with your AdaBox or you just want to relive what it's like being a beginner at electronics again. But most of all, you want to learn how to build and make stuff with electronics! Gone are the days where you need thousands of dollars of equipment and lots physics/math background. Nowadays, if you want to learn to work with electronics, you can jump right in for $100 or less, and any sort of computer. And we're talking about learning a lot of electronics - from the basics of analog to the complexities of firmware. With a good pack of parts, you can build a base of knowledge that will take you from your first blinking LED to someone who can start prototyping and inventing custom products. - [AdaBox](https://learn.adafruit.com/categories/adabox.md) ### Adafruit Products These guides are all about products designed and made by Adafruit. This is a great way to discover new Adafruit products, and learn how they work. - [Adafruit Products](https://learn.adafruit.com/categories/adafruit-products.md) ### Arduino Compatibles Arduino is the popular open-source electronics prototyping platform based on easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments and is designed to be as flexible as possible to fit your project's needs. - [Arduino Compatibles](https://learn.adafruit.com/categories/arduino.md) - [Adafruit FLORA](https://learn.adafruit.com/categories/flora.md) - [Adafruit GEMMA](https://learn.adafruit.com/categories/gemma.md) - [Adafruit METRO](https://learn.adafruit.com/categories/adafruit-metro.md) - [Grand Central](https://learn.adafruit.com/categories/grand-central.md) - [Learn Arduino](https://learn.adafruit.com/categories/learn-arduino.md) - [Trinket](https://learn.adafruit.com/categories/trinket.md) ### Breakout Boards Breakout your Raspberry Pis and Arduinos with this broad selection of versatile breakout boards! Engineered to help you realize your robotics, GPS and altitude sensing projects as well as servo and touch screen interfacing, you'll find many uses for these high-quality boards, most of which are manufactured in house at Adafruit! - [Breakout Boards](https://learn.adafruit.com/categories/breakout-boards.md) - [Accel, Gyro, & Magnetometers](https://learn.adafruit.com/categories/accel-gyro-and-magnetometers.md) - [Amplifiers/Sound](https://learn.adafruit.com/categories/amplifiers-slash-sound.md) - [Batteries/Power](https://learn.adafruit.com/categories/batteries-slash-power.md) - [Clocks](https://learn.adafruit.com/categories/clocks.md) - [FONA](https://learn.adafruit.com/categories/fona.md) - [LCDs, LEDs, & Displays](https://learn.adafruit.com/categories/lcds-leds-and-displays.md) - [Motor Controls](https://learn.adafruit.com/categories/motor-controls.md) - [Radio](https://learn.adafruit.com/categories/radio.md) - [SMT Breakout PCB](https://learn.adafruit.com/categories/smt-breakout-pcb.md) - [Storage](https://learn.adafruit.com/categories/storage.md) - [Touch](https://learn.adafruit.com/categories/touch.md) - [WiFi](https://learn.adafruit.com/categories/wifi.md) ### Circuit Playground Stop breadboarding and soldering - start making immediately! Adafruit's Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the [drag-and-drop MakeCode programming site](https://makecode.adafruit.com/), learn computer science using the CS Discoveries class on code.org, jump into [CircuitPython](https://www.adafruit.com/circuitpython) to learn Python and hardware together, or even use Arduino IDE. [Circuit Playground Bluefruit](https://www.adafruit.com/product/4333) is our third board in the Circuit Playground series, another step towards a perfect introduction to electronics and programming. We've taken the popular Circuit Playground Express and made it even better! Now the main chip is more powerful, and comes with Bluetooth Low Energy support for wireless connectivity. To learn more about this board check out [Adafruit Circuit Playground Bluefruit](https://learn.adafruit.com/adafruit-circuit-playground-bluefruit) [Circuit Playground Express](https://www.adafruit.com/product/3333) is a powerful processor with 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. This board supports MakeCode, CircuitPython, and Arduino. To learn more about this board check out [Adafruit Circuit Playground Express](https://learn.adafruit.com/adafruit-circuit-playground-express) [Circuit Playground Classic](https://www.adafruit.com/product/3000) is the original classic Circuit Playground, which is not as powerful or featured. It is designed to be used with Arduino IDE and code.org CS Discoveries only. It does not run MakeCode or CircuitPython, and does not have Infrared support (which is why we made the Express!). To learn more about this board check out [Introducing Circuit Playground](https://learn.adafruit.com/introducing-circuit-playground) A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand. - [Circuit Playground](https://learn.adafruit.com/categories/circuit-playground.md) - [Bluefruit](https://learn.adafruit.com/categories/bluefruit.md) - [Classic](https://learn.adafruit.com/categories/classic.md) - [Express](https://learn.adafruit.com/categories/express.md) ### CircuitPython - [CircuitPython](https://learn.adafruit.com/categories/circuitpython.md) ### CLUE - [CLUE](https://learn.adafruit.com/categories/clue.md) ### Community Support - [Community Support](https://learn.adafruit.com/categories/community-support.md) ### Components - [Components](https://learn.adafruit.com/categories/components.md) ### Crickit - [Crickit](https://learn.adafruit.com/categories/crickit.md) ### Customer & Partner Projects - [Customer & Partner Projects](https://learn.adafruit.com/categories/customer-projects.md) ### Development Boards - [Development Boards](https://learn.adafruit.com/categories/development-boards.md) - [ARM Development](https://learn.adafruit.com/categories/arm-development.md) - [BeagleBone](https://learn.adafruit.com/categories/beaglebone.md) ### Educators - [Educators](https://learn.adafruit.com/categories/educators.md) - [Circuit Playground series](https://learn.adafruit.com/categories/circuit-playground-series.md) ### EL Wire/Tape/Panel - [EL Wire/Tape/Panel](https://learn.adafruit.com/categories/el.md) ### Feather The Adafruit Feather are a complete line of development boards from Adafruit that are both standalone and stackable. They're able to be powered by lipo batteries for on-the-go use or by their micro-USB plugs for stationary projects. Feathers are flexible, portable, and as light as their namesake. We also carry a [complete line of accessories and Feather Wings](https://www.adafruit.com/feather) to stack boards and add room for prototyping. At its core, the Adafruit Feather is a complete ecosystem of products - and the best way to get your project flying. - [Feather](https://learn.adafruit.com/categories/feather.md) - [Feather Boards](https://learn.adafruit.com/categories/feather-boards.md) - [FeatherWings](https://learn.adafruit.com/categories/featherwings.md) ### Gaming - [Gaming](https://learn.adafruit.com/categories/gaming-1.md) ### Hacks - [Hacks](https://learn.adafruit.com/categories/hacks.md) ### Internet of Things - IOT - [Internet of Things - IOT](https://learn.adafruit.com/categories/internet-of-things-iot.md) - [Adafruit IO](https://learn.adafruit.com/categories/adafruit-io.md) - [Bluefruit / BLE](https://learn.adafruit.com/categories/bluefruit-slash-ble.md) - [Wireless](https://learn.adafruit.com/categories/wireless.md) ### LCDs & Displays - [LCDs & Displays](https://learn.adafruit.com/categories/lcds-and-displays.md) - [Character Displays](https://learn.adafruit.com/categories/character-displays.md) - [eInk / ePaper](https://learn.adafruit.com/categories/eink-slash-epaper.md) - [Graphic LCDs](https://learn.adafruit.com/categories/graphic-lcds.md) - [Graphic LEDs](https://learn.adafruit.com/categories/graphic-leds.md) - [Graphic TFTs](https://learn.adafruit.com/categories/graphic-tfts.md) - [HDMI](https://learn.adafruit.com/categories/hdmi.md) - [OLED](https://learn.adafruit.com/categories/oled.md) ### LEDs - [LEDs](https://learn.adafruit.com/categories/leds.md) - [LED Matrices](https://learn.adafruit.com/categories/led-matrix.md) - [LED Pixels](https://learn.adafruit.com/categories/led-pixels.md) - [LED Strips](https://learn.adafruit.com/categories/led-strips.md) ### Machine Learning - [Machine Learning](https://learn.adafruit.com/categories/machine-learning.md) ### MakeCode - [MakeCode](https://learn.adafruit.com/categories/makecode.md) ### Maker Business - [Maker Business](https://learn.adafruit.com/categories/maker-business.md) - [Manufacturing](https://learn.adafruit.com/categories/manufacturing.md) - [Shipping](https://learn.adafruit.com/categories/shipping.md) ### micro:bit - [micro:bit](https://learn.adafruit.com/categories/micro-bit.md) ### Microcontrollers - [Microcontrollers](https://learn.adafruit.com/categories/microcontrollers.md) - [MicroPython](https://learn.adafruit.com/categories/micropython.md) ### Programming - [Programming](https://learn.adafruit.com/categories/programming.md) - [Linux](https://learn.adafruit.com/categories/linux.md) - [MicroPython / CircuitPython](https://learn.adafruit.com/categories/micropython-slash-circuitpython.md) - [Python](https://learn.adafruit.com/categories/python.md) ### Raspberry Pi - [Raspberry Pi](https://learn.adafruit.com/categories/raspberry-pi.md) - [Learn Raspberry Pi](https://learn.adafruit.com/categories/learn-raspberry-pi.md) - [Pi A+, B+, 2, 3](https://learn.adafruit.com/categories/pi-b-plus-2-3.md) - [Pi Zero](https://learn.adafruit.com/categories/pi-zero.md) - [RP2040](https://learn.adafruit.com/categories/rp2040.md) ### Robotics & CNC - [Robotics & CNC](https://learn.adafruit.com/categories/robotics.md) ### Sensors - [Sensors](https://learn.adafruit.com/categories/sensors.md) - [Biometric](https://learn.adafruit.com/categories/biometric.md) - [Camera](https://learn.adafruit.com/categories/camera.md) - [Force & Flex](https://learn.adafruit.com/categories/force-and-flex.md) - [GPS](https://learn.adafruit.com/categories/gps.md) - [Light](https://learn.adafruit.com/categories/light.md) - [Proximity](https://learn.adafruit.com/categories/proximity.md) - [RFID / NFC](https://learn.adafruit.com/categories/rfid-slash-nfc.md) - [Temperature & Humidity](https://learn.adafruit.com/categories/temperature.md) - [Weather](https://learn.adafruit.com/categories/weather.md) ### STEMMA WHAT IS STEMMA? STEMMA is a plug-and-play board and sensor system that lets you quickly plug together various devices and accessories, without any soldering! STEMMA uses 3-pin cables for simple analog and digital devices, like relays and buttons. For more complex sensors and displays, we use a 4-wire I2C connection. For larger boards and devices we use a Grove-compatible connector, for smaller ones we use a Qwiic-compatible connector called STEMMA QT. As all STEMMA sensors have level shifting and voltage regulation, you can use them safely with any 3 to 5V power and logic device - from microcontrollers like Arduino-compatibles, to full Linux single board computers like the Raspberry Pi. We even have USB to I2C adapters that let you connect STEMMA devices directly to a computer without any microcontroller programming required! Then, use our Arduino or CircuitPython/Python libraries and examples to easily get your electronics project working on any platform with STEMMA and STEMMA QT. To explore all your plug-and-play options, Check out our full list of [STEMMA Compatibles](https://www.adafruit.com/index.php?main_page=category&cPath=1005). If you want to learn more about STEMMA, the [Adafruit STEMMA & STEMMA QT](https://learn.adafruit.com/introducing-adafruit-stemma-qt) guide by Lady Ada will have everything you need. - [STEMMA](https://learn.adafruit.com/categories/stemma.md) ### Tools - [Tools](https://learn.adafruit.com/categories/tools.md) - [Hand Tools](https://learn.adafruit.com/categories/hand-tools.md) - [Lasercutting](https://learn.adafruit.com/categories/lasercutting.md) - [Multimeters](https://learn.adafruit.com/categories/multimeters.md) - [Soldering](https://learn.adafruit.com/categories/soldering.md) ### Trellis - [Trellis](https://learn.adafruit.com/categories/trellis.md) - [Classic Trellis](https://learn.adafruit.com/categories/classic-trellis.md) - [NeoTrellis](https://learn.adafruit.com/categories/neotrellis.md) ### Wearables - [Wearables](https://learn.adafruit.com/categories/wearables.md)