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Here are popular Adafruit options across kits, add-ons, sensors, storage, and power—great for microcontroller builds:
Kits & project add-ons
- Adafruit Soil Sensor Kit for micro:bit v2 ($59.68) — classroom-friendly kit for micro:bit v2.2 soil monitoring + learning projects.
- Adafruit FeatherWing 128x64 OLED Add-on ($38.07) — assembled 128×64 monochrome OLED FeatherWing with 3 buttons.
- Adafruit USB Host FeatherWing with MAX3421E ($35.69) — adds USB host (keyboards, mice, USB drives) to Feather projects.
Cameras
- OV5640 Camera Breakout - 72 Degree Lens with Autofocus ($23.75) — 5MP OV5640, 72° lens, autofocus.
- OV5640 Camera Breakout with 120° Low-Distortion Lens ($29.84) — 5MP OV5640 with 120° wide-angle low-distortion lens.
Sensors (I2C/QT-friendly options)
- Adafruit TMP119 ±0.03°C I2C Temperature Sensor ($35.69) — ultra high-precision ±0.03°C temperature sensing over I2C.
- MAX44009 Wide-Range Lux Light Sensor Breakout ($29.84) — measures real lux up to 188,000 lux.
- VCNL4020 Proximity & Light Sensor Breakout - STEMMA QT/Qwiic ($14.20) — combined proximity + ambient light over I2C, with STEMMA QT/Qwiic.
- Adafruit QMC5883P Triple-Axis Magnetometer ($14.20) — 3-axis magnetometer for compass/orientation.
Power monitoring & power-path protection
- Adafruit INA228 85V 20-bit I2C Power Monitor Breakout ($35.69) — 85V, 20-bit current/voltage/power monitoring (high- or low-side).
- Adafruit LM73100 23V 5A Ideal Diode Breakout ($11.82) — 3–23V power-path “ideal diode” up to 5A with low loss.
Flash memory breakouts (for logging/files/firmware assets)
- SPI Flash Breakout - W25Q16 16Mbit / 2MB ($7.04) — compact 2MB SPI flash storage.
- QSPI DIP Breakout Board - W25Q16 16Mbit / 2MB ($5.97) — easy prototyping 2MB QSPI flash (8-SOIC to DIP).
- Adafruit QSPI DIP Breakout with W25Q64 Flash - 64Mbit / 8MB ($6.56) — prototyping-friendly 8MB QSPI flash.
Lighting
- Adafruit DotStar Digital LED Strip - Black 144 LED/m - 0.5 Meter [BLACK] ($55.64) — DotStar (2-wire SPI) strip, 144 LED/m, 0.5m length for fast animations.
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Adafruit SCD-40 - True CO2, Temperature and Humidity Sensor
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The Adafruit SCD-40 is a photoacoustic true CO2 sensor that directly measures carbon dioxide concentration in ambient air, rather than estimating it from volatile organic compounds. It also includes integrated temperature and humidity sensing, providing comprehensive environmental data from a com...
Adafruit RGB Matrix FeatherWing Kit - For nRF52840 Feathers
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The Adafruit RGB Matrix FeatherWing Kit for nRF52840 lets you drive HUB75-type RGB LED matrices from nRF52840-based Feather boards. With built-in power regulation and a compact form factor, it's the easiest way to create colourful scrolling displays and LED wall projects using the Feather ecosyst...
Adafruit 1.2 4-Digit 7-Segment Display w/I2C Backpack - Red
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The Adafruit 1.2" 4-Digit 7-Segment Display with I2C Backpack in red makes it easy to add a large, bright numeric display to any microcontroller project. The backpack handles all LED multiplexing and driving via I2C, so you only need two data pins to control a full 4-digit display. The HT16K33 d...
Adafruit USB Type C Power Delivery Dummy - I2C or Switchable
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The Adafruit USB Type C Power Delivery Dummy (I2C or Switchable) lets you tap into USB-C Power Delivery to get 5V, 9V, 12V, 15V, 18V, or 20V from any compatible USB-C charger or wall adapter — no soldering required. Built around the HUSB238 PDL003A E-Marker variant, it can request up to 5A for a ...
Adafruit ATtiny1616 Breakout with seesaw - STEMMA QT / Qwiic
The Adafruit ATtiny1616 Breakout with seesaw is a versatile development board that combines an ATtiny1616 microcontroller with the Adafruit seesaw I2C framework and STEMMA QT connectivity. It works as both a standalone dev board and an I2C peripheral that adds GPIO, ADC, PWM, and NeoPixel support...
Adafruit Micro SD SPI or SDIO Card Breakout Board - 3V ONLY!
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The Adafruit Micro SD SPI or SDIO Card Breakout Board gives you fast microSD card access using either standard SPI or the higher-speed SDIO protocol. Unlike SPI-only breakouts, this board exposes the full SDIO bus with up to 4 data pins for significantly faster read/write speeds — roughly double ...
Adafruit Music Maker MP3 Shield for Arduino (MP3/Ogg/WAV...)
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The Adafruit Music Maker MP3 Shield turns any Arduino into a versatile audio player, recorder, and MIDI synthesiser. Powered by the VS1053B codec chip, it decodes MP3, AAC, Ogg Vorbis, WMA, FLAC, WAV, and MIDI formats, and can also record audio in PCM (WAV) or compressed Ogg Vorbis — all over a l...
Adafruit 1.47" 320x172 Round Rectangle Color IPS TFT Display
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The Adafruit 1.47" 320×172 Round Rectangle Colour IPS TFT Display features a distinctive rounded-corner design at 250 PPI, driven by the ST7789 controller over SPI. The rounded corners are achieved by masking corner pixels — the display is addressed as a standard rectangle in RAM, so no special m...
Adafruit RGB Matrix Featherwing Kit - For M0 and M4 Feathers
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The Adafruit RGB Matrix FeatherWing Kit lets you drive HUB75-type RGB LED matrices from any SAMD21 M0 or SAMD51 M4 Feather board. With built-in power regulation and a compact form factor, it's the easiest way to create colourful scrolling displays and LED wall projects using the Feather ecosystem...
Adafruit Mini 0.7 8x8 LED Matrix w/I2C Backpack - Pure Green
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The Adafruit Mini 0.7" 8×8 LED Matrix with I2C Backpack makes it easy to add a bright pure green dot-matrix display to any project. The I2C backpack handles all the multiplexing, so you only need two data pins (SDA and SCL) plus power to control all 64 LEDs — no complex wiring or external driver ...
Adafruit Sensirion SHT45 Precision Temp & Humidity with PTFE
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The Adafruit Sensirion SHT45 is the highest-accuracy sensor in the SHT4x family, delivering ±1.0% typical relative humidity accuracy and ±0.1 °C typical temperature accuracy. Featuring a PTFE membrane for protection against dust and water ingress, it's built for demanding environments and precisi...
Adafruit 0.8 8x16 LED Matrix FeatherWing Display Kit - White
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The Adafruit 0.8" 8x16 LED Matrix FeatherWing Display Kit in white pairs two miniature 8x8 LED matrices with a FeatherWing driver board to create a 128-pixel display for any Feather microcontroller. Use it for scrolling text, bitmap graphics, emoticons, or simple animations. The onboard HT16K33 ...
Adafruit 0.56 4-Digit 7-Segment Display w/I2C Backpack - Red
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The Adafruit 0.56" 4-Digit 7-Segment Display with I2C Backpack in red makes it easy to add a bright numeric display to any microcontroller project. The backpack handles all LED multiplexing and driving via I2C, so you only need two data pins to control a full 4-digit display. The HT16K33 driver ...
Adafruit PCA9546 4-Channel STEMMA QT / Qwiic I2C Multiplexer
Need to use multiple I2C devices that share the same address? The PCA9546 4-Channel STEMMA QT / Qwiic I2C Multiplexer lets you connect up to four same-address I2C devices with completely solderless wiring. Five JST SH connectors (1 input + 4 outputs) make it plug-and-play with any STEMMA QT or Qw...
Adafruit QT Py ESP32-S2 WiFi Dev Board with uFL Antenna Port
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The Adafruit QT Py ESP32-S2 with uFL Antenna Port is the extended-range version of the QT Py ESP32-S2. Instead of an on-board antenna, it features a uFL connector so you can attach any 2.4 GHz Wi-Fi antenna for significantly better range — ideal for projects where the board is enclosed in a metal...
Adafruit 0.54 Quad Alphanumeric FeatherWing Display - Yellow
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The Adafruit 0.54" Quad Alphanumeric FeatherWing Display in yellow adds a bright, easy-to-read 4-character 14-segment LED display to any Feather microcontroller. Each character can show full alphanumeric text (A–Z, 0–9) plus symbols, making it ideal for clocks, sensor readouts, status messages, a...
Adafruit 1.69" 280x240 Round Rectangle Color IPS TFT Display
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The Adafruit 1.69" Round Rectangle TFT is a compact IPS display featuring 280×240 pixels at 220 PPI with distinctive rounded corners — ideal for smartwatch-style interfaces and modern electronics projects. The ST7789 driver communicates over 4-wire SPI and works with any microcontroller or microc...
Adafruit Feather 32u4 RFM69HCW Packet Radio - 868 or 915 MHz
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The Feather 32u4 RFM69HCW Packet Radio (868/915 MHz) combines an ATmega32u4 microcontroller with an SX1231-based packet radio transceiver, USB connectivity, and LiPo battery charging. It offers longer range than 2.4 GHz protocols (Bluetooth, Wi-Fi, ZigBee) with more flexibility than BLE, making i...
Adafruit SEN54 or SEN55 Adapter Breakout - STEMMA QT / Qwiic
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The Adafruit SEN54/SEN55 Adapter Breakout lets you quickly connect a Sensirion SEN5x environmental sensor node to any microcontroller or single-board computer via STEMMA QT / Qwiic — no soldering or breadboarding required. The adapter handles the SEN5x's special cable connection and 5 V power req...
Adafruit SHT41 Trinkey - USB Temperature and Humidity Sensor
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The Adafruit SHT41 Trinkey is a tiny USB A device that combines an ATSAMD21 microcontroller with a Sensirion SHT41 temperature and humidity sensor. Simply plug it into any USB A port on your computer and start reading environmental data — no wiring, soldering, or driver installation required. Th...
