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Use a Circuit Playground Express to see your pulse graphed out

The light sensor on the Circuit Playground Express is used as a pulse sensor, albeit one with limited accuracy. The output can be plotted in Circuit Python and the Mu editor or MakeCode for Windows 10.
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Using the Analog Devices ADT7410 and the Feather Huzzah to create an IoT Temperature logger

Analog Devices, known for their reliable and well-documented sensor chips - has a high precision and high resolution temperature sensor on the market - the ADT7410 - and we've got a breakout to make it easy to use! Even better? We can easily bring the sensor online using a Feather HUZZAH and Adafruit IO. You'll be up and running in under 15 minutes!

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Revisiting a project with newer hardware and expanded features.

A upgrade of the jar humidity monitor project. This one using CircuitPython, the Feather M4 Express and a 3-color eInk display.

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Home Assistant tracks the state of all the devices in your home, so you don't have to, and Adafruit IO can store it all!

Use an Adafruit Feather HUZZAH and a Raspberry Pi in building a Home Assistant which tracks the state of all the devices in your home. The free Adafruit IO service stores your data for you!

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Precision I2C temperature sensing from Analog Devices

Analog Devices, known for their reliable and well-documented sensor chips - has a high precision and high resolution temperature sensor on the market, and we've got a breakout to make it easy to use! The Analog Devices ADT7410 gets straight to the point - it's an I2C temperature sensor, with 16-bit 0.0078°C temperature resolution and 0.5°C temperature tolerance. Wire it up to your microcontroller or single-board computer to get reliable temperature readings with ease
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Get up and running quickly with this wide-range I2C-based magnetic field sensor

The MLX90393 isn't Just One More 3-axis magnetometer! This device has a very wide measurement range (from 5-50mT), making it useful for far more than just orientation sensing toward a magnetic pole. You could use it for 'magnetic fingerprinting', for example, which uses variations in magnetic fields in a known/fixed location to determine where you are indoors. Or it makes a great contactless interface for measuring changes in anything the generates a magnetic field (motors, etc.). Dig into this guide for details on how to get started with this flexible magnetic field sensor!

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Build punch reactive Garnet's Gauntlets using Circuit Playground Express and MakeCode

Make these fun gauntlets using craft foam and a light up, punch-reactive Circuit Playground Express that flashes and plays sound when shaken. Uses the built-in accelerometer!

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Measure distances using lasers. LASERS! No sharks, though.

This guide takes a Garmin LiDAR Lite, A Feather M4 Express, a 7-segment display, some power circuitry, and some 3D printing to build a handheld mobile distance meter.
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Use RPI with a bonnet and RGB LED Matrix to get your timing right

This project shows the creation of a digital clock using RGB LED matrix. But that is just the beginning. Once you get it going, you can use all Python libraries available to display anything that matters to you. Using the 3D file provided, print a frame to house the LED Matrix, a Raspberry Pi Zero W and light sensor.
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Bringing Low Power Wide Area Networking to CircuitPython

Connect an Adafruit CircuitPython-compatible board to The Things Network - a distributed LoRaWAN network designed for the Internet of Things (IoT). Build a weather node to track the humidity and temperature over time.

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