Modern Replacements for DHT11 and DHT22 Sensors
Modern sensors outperform the older DHT series sensors and are much easier to use with today's microcontrollers and the Raspberry Pi. Consider these three alternatives.
MacroPad 2FA TOTP Authentication Friend
Use an Adafruit MacroPad to keep track of your Authy/Authenticator based TOTP keys.
CircuitPython Libraries on any Computer with Raspberry Pi Pico
A simple way to get I2C, SPI, GPIO, ADC, PWM, and NeoPixel support on any PC with USB.
Digital Nose Milk Freshness Checker
In this guide we investigate the potential for using a gas sensor as a way to test for milk freshness. An SGP30 and a CLUE are used to make a little "freshness checker" device. We then use this in a simple experiment to see if it can detect spoiled milk.
RGB Matrix Portal Room CO2 Monitor
Use an Adafruit Matrix Portal and a SCD-30 sensor to monitor and display current ambient CO2 levels. Using STEMMA QT, no soldering is required.
MagTag Dishwasher Status
Indicate whether the dishes in the dishwasher are clean or dirty with this helpful eInk display. You can use a button press or just turn the display upside down to change the indication.
MagTag Daily Weather Forecast Display
Is the weather outside delightful? Or is it frightful? And what about in the coming days? In this guide we'll show you how to use an Adafruit MagTag to create a weather display for today and future conditions.
MagTag Tides Viewer
Tides are a fun thing to track if you live near the ocean. The information is even useful for any activity that is tide dependent, like surfing, boating, or just plain swimming. This guide will show you how to use an Adafruit MagTag to fetch and display daily tide information. It will show the times for the high and low events for the day as well as a neat little plot.
Matrix Portal Flow Visualizer
Put a little wind tunnel on your shelf using an Adafruit Matrix Portal board driving an RGB LED Matrix.
Face Mask Efficacy Testing with SCIENCE!
Use a Raspberry Pi, a camera, and a laser to see if we can measure how various masks trap blobs expelled when a person talks or sneezes.
PyPortal Hurricane Tracker
Use a PyPortal to track incoming storms. Code is written in CircuitPython.
CLUE Altimeter
With a CLUE microcontroller board, you can learn how pressure can be used to calculate altitude. Display altitude on the CLUE LCD display.
T³ Time Triangle Thing
In this guide we'll show you how you can create a fun little physics based hourglass gadget. Hourglasses are used to track time, and this one ends up being sort of triangle shaped, so...yah, it's a Time Triangle Thing.
CircuitPython CLUE I Ching Caster
Use a CLUE to create a hexagram you can use to consult the I Ching.
Using the RockBLOCK Iridium Modem
Send messages to and from anywhere on planet Earth!
