The Adafruit BNO055 + BMP280 BFF provides a way for you to turn many QT Py boards into powerful 9 degree-of-freedom (9DoF) motion plus pressure/altitude sensing projects that are super small. This PCB is designed to fit onto the back of any QT Py or Xiao board. It can be soldered into place or made removable using pin and socket headers.

The Adafruit ADG729 Dual 1-to-4 Analog Matrix Switch lets you connect between two sets of four analog signals, much like 8 mechanical switches. The ADG729 uses I2C to select which of the 8 channels switches to turn on or off. Four channels connect to the DA analog pin, and the other four channels connect to the DB analog pin.

You can use the Adafruit ADG728 1-to-8 Analog Matrix Switch to connect between eight analog signals, much like a set of 8 mechanical switches. These chips tend to be tiny surface mount parts, so this breakout will let anyone use the ADG728 switch for signals up to 5V, without fiddly soldering.

Display Adafruit IO data on any HDMI display with the Raspberry Pi Pico W and Adafruit’s Pi CowBell DVI Output!

The Adafruit Infrared IR Remote Receiver has two selectable IR receiver chips. Usage is simple: Power the board by connecting V+ and ground to 3 to 5VDC, point a 38KHz remote control at the sensors and press some buttons. The demodulated IR envelope is piped out the Signal pin into your microcontroller which will then need to decode it.

An optical reflective sensor is a composite electronic device with two elements - an IR LED and an IR photo-transistor. The IR LED blasts light, and when something bounces the light back to the photo-transistor, the transistor turns on and the amount of current flowing through it increases. This makes the sensor great at detecting when something is in front of the sensor.

The Adafruit LTC4316 I2C Address Translator does on the fly I2C address translation. There's an 'input I2C' half, and an 'output I2C' half. And any devices on the 'output' half will automatically have their addresses translated from the input half. Specifically, each device will have bit A6 flipped (most-significant-bit of the address) and then bits A4 and A5 can also be flipped or kept the same, with the two DIP switches on board. To determine the translated address, we use XOR bitwise math.

Build an internet connected battery monitor with ESP32-S2 Reverse TFT Feather, CircuitPython and Adafruit IO.

It's half USB key, half temperature-humidity sensor... it's the Adafruit SHT4x Trinkey. There's an ATSAMD21 microcontroller on board with just enough circuitry to keep it happy. One pin of the microcontroller connects to a NeoPixel LED. Another pin is used as a capacitive touch input on the end. A reset button lets you enter bootloader mode if necessary.

You can use CircuitPython to control your wireless Elgato lights. The Elgato API is fairly simple and uses HTTP requests to send and receive JSON data. This makes for an excellent CircuitPython project with the Feather ESP32-S3 Reverse TFT. The board connects to your WiFi network and sends HTTP requests to your Elgato light when you press one of its three onboard buttons.

The Adafruit Proto Doubler PiCowBell is intended to be treated like a mini solder-less proto plate to simplify programming and sensor connectivity for your Raspberry Pi Pico board. Reset button? Yes! STEMMA QT / Qwiic connector for fast I2C? Indeed. Battery with recharging and on/off switch? Affirmative. Plug-and-play so no soldering necessary when used with a Pico H or Pico WH? Here you go!

The Adafruit Proto Under Plate PiCowBell is intended to be treated like a mini solderless proto plate to simplify programming and sensor connectivity for your Raspberry Pi Pico board. Reset button? Yes! STEMMA QT / Qwiic connector for fast I2C? Indeed. Plug-and-play so no soldering necessary when used with a Pico H or Pico WH? Here you go!

Build an internet connected bird feeder camera with Adafruit IO and CircuitPython.

The Adafruit Terminal PiCowbell is ideal for when you want quick access to connect solid or stranded core wires to any of the GPIO pads on the Pico. We use four 10-pin 2.54" pitch screw terminal blocks that can fit 18 to 26 AWG solid or stranded core wires. Note that we really connect every pin 1-to-1, so there will be plenty of ground connects!

The Adafruit STEMMA Analog SPDT Switch lets anyone use the MAX4544 SPDT analog switch for signals up to 12V, without fiddly soldering. When the selection signal is low, the Common pin is connected to the Normally Closed (NC) pin and disconnected from the Normally Open (NO) pin. When the selection signal is high, the Common pin is connected to NO and disconnected from NC.