Adafruit Learning System

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TEMPERATURE & HUMIDITY

48 GUIDES | 284 PAGES | 0 FEATURED | 10 POPULAR

reef-pi Guide 2: Power Controller

Learn to control AC equipment using reef-pi

This guide will walk through the build process of controlling AC equipment using an automated power strip (power controller). The power controller allows scheduled and on-demand control. Power controllers are simple and inexpensive to build and it acts as a foundational layer for temperature or water level controllers.

reef-pi Guide 1: Setup and Demonstration

Installation and configuration of reef-pi, the open source reef tank controller, capable of automating AC equipment, DC pumps, LED lights and more

reef-pi is an opensource reef tank controller capable of automating day to day reef keeping chored including equipment control, temperature control, water level control, dawn to dusk light cycle. This is the first tutorial within the reef-pi tutorial series covering installation and configuration of reef-pi software on Raspberry Pi.

Make It Hot or Cold

Use a Crickit and Circuit Playground Express to heat or cool items.

Keeping things at a certain temperature, heating them up or cooling them off is something we all do daily. Learn how to use some common electrical parts and a microcontroller to automate your heating and cooling needs.

Compost Friend!

Help your compost THRIVE with this waterproof, Circuit Playground, powered smart compost machine

by Isaac Wellish

Know when to turn and add wet or dry material to your compost with this sun powered, waterproof Circuit Playground compost optimization machine. With some simple temperature and moisture sensors, the NeoPixels on the Circuit Playground Express will tell you what your compost needs to thrive.

Soil Moisture Sensor with Circuit Playground Express and MakeCode

Allows your plants to let you know when they need a drink.

This project uses the Circuit Playground Express to sense the moisture in a plant bed. The moisture content changes the value read from the analog input. The Circuit Playground Express lights indicate the percentage soil moisture.

Storage humidity and temperature monitor

Keep an "eye" on things that are best stored at a specific temperature and/or relative humidity.

Build a simple battery powered temperature and humidity monitor with a audio alert. This project uses the Adafruit Trinket M0 and Si7021 temperature and humidity sensor. A TPL5110 module provides battery management to ensure months of operation on a single battery charge.

Data Logging with Feather and CircuitPython

It's log, it's log, it's big, it's data, it's good!

by Kattni Rembor

This project uses the Feather M0 Express, the Adalogger Featherwing and the AM2320 Temperature and Humidity sensor to gather data from the sensor and save it to the SD card on the Adalogger. You'll learn how to record data, and then take that data, import it into a spreadsheet and turn it into an awesome graph!

micro:bit Lesson 4. Sensing Light

Learn how to sense light using your micro:bit

I this lesson, you will learn how to measure light with a micro:bit using both its internal sensor and by attaching a few components to breadboard.

Adafruit AM2320 Sensor

A I2C-friendly version of those popular DHT sensors

This little sensor looks an awful lot like the popular DHT11/DHT22 temperature and humidity sensors, but unlike classic DHT sensors, it has an I2C interface! That's right, you do not need to use a bit-bang timing-specific protocol to talk to the AM2320, it uses plain-old-I2C. Whew, that makes things a little easier, doesn't it?

Using DS18B20 Temperature Sensor with CircuitPython

How to connect and use a DS18B20 one-wire temperature sensor with CircuitPython!

Learn how to connect a DS18B20 one-wire temperature sensor to a CircuitPython board and control it with Python code!

Adafruit BME680

The BME680 combines Temperature, Humidity, Pressure and Gas Sensing!

The long awaited BME680 from Bosch gives you all the environmental sensing you want in one small package. This little sensor contains temperature, humidity, barometric pressure and VOC gas sensing capabilities. All over SPI or I2C, at a great price!

Chilled Drinkibot

Make a nice, cold beverage using thermoelectric cooling!

Peltier cooler + Trinket M0 + CircuitPython = refreshing drinks! This project uses a thermoelectric cooling assembly to turn electricity into coldness!! That chill is transferred to your beverage of choice via thermal conductivity, and then transported safely to your drinking glass with a peristaltic pump. Ahhhh.

Arm-based IoT Kit for Cloud IoT Core - Getting Started

Sensors, blinky things and code to get you connected to Google Cloud IoT Core and build end to end solutions.

by Matthew DuPuy

Everything you need to prototype an IoT device and connect it to Google IoT Core. This kit comprises a Raspberry Pi3, GPIO breakout cable, breadboard, cables and wealth of sensors and actuators. Google Cloud IoT Core is a fully managed service to easily and securely connect, manage, and ingest data from globally dispersed devices.

CPU Temperature Logging with CircuitPython

Explore some new features in CircuitPython 2.0.0 with nothing but your board and one wire!

The temperature of your board's CPU, exposed through the magic of CircuitPython. Plus a walkthrough of putting your board into write mode, and how to get out of that if you accidentally lock yourself out of the USB interface.

Adafruit AMG8833 8x8 Thermal Camera Sensor

Build your own mini thermal camera

Panasonic's AMG8833 Grid-EYE is an 8x8 array of IR thermal sensors. When connected to your microcontroller (or raspberry Pi) it will return an array of 64 individual IR temperature readings over I2C.

My Mini Race Car

Bluetooth controlled, temperature sensing Formula E racer!

Zooooom! Now you can build and drive your own Mini Race Car using the Feather 32u4 Bluefruit LE microcontroller. Keep an eye on racetrack telemetry with the included HTU21D-F temperature & humidity sensor breakout board.

Kombucha Thermostat with CircuitPython and Feather

Kombucha, It's ALIVE and it needs a smart heater

by Scott Shawcroft

Brewing Kombucha in cool climates is challenging. In this guide we use Adafruit's Feather M0 and CircuitPython to create a thermostat for brewing the perfect 'Buch all year round.

Adabox 001 Temperature Alarm

A Temperature Monitor and Alarm with parts from Adabox 001

by Kirby Griese

Build a Temperature Monitor and Alarm using the parts included in Adabox 001.

Adafruit MAX31865 RTD PT100 or PT1000 Amplifier

PT100 & PT1000 Cruisin'

To get precision and accuracy out of your platinum (PT100 or PT1000) RTD you must use an amplifier that is designed to read the low resistance. Better yet, have an amplifier that can automatically adjust and compensate for the resistance of the connecting wires. If you're looking for a great RTD sensor, today is your lucky day because we have a lovely Adafruit RTD Sensor Amplifier with the MAX31865 breakout for use with any 2, 3 or 4 wire PT100 RTD!

How Cold Is It?

Let Circuit Playground help you find out.

by Carter Nelson

Turn the Circuit Playground into a cold temperature indicator using the on board temperature sensor.

Adafruit MAX31856 Universal Thermocouple Amplifier

Now you can handle any kind of thermocouple!

Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference, as well as calculations to handle any non-linearities. For a long time we've suggested our MAX31855K breakout, which works great but is only for K-type thermocouples. Now we're happy to offer a great new thermocouple amplifier/converter that can handle just about any type of thermocouple, and even has the ability to give you notification when the temperature goes out of range, or a fault occurs. Very fancy! This converter communicates over 4-wire SPI and can interface with any K, J, N, R, S, T, E, or B type thermocouple

Adafruit Si7021 Temperature + Humidity Sensor

Get the current ambient temperature and humidity

This lovely sensor for Silicon labs has ± 3% relative humidity measurements with a range of 0–80% RH, and ±0.4 °C temperature accuracy at a range of -10 to +85 °C. Great for all of your environmental sensing projects. It uses I2C for data transfer so it works with a wide range of microcontrollers.

Adafruit SHT31-D Temperature & Humidity Sensor Breakout

Ooh, a Sensiron sensor with true I2C!

Sensirion Temperature/Humidity sensors are some of the finest & highest-accuracy devices you can get. And, finally we have some that have a true I2C interface for easy reading. The SHT31-D sensor has an excellent ±2% relative humidity and ±0.3°C accuracy for most uses.

Adafruit BMP280 Barometric Pressure + Temperature Sensor Breakout

Buld your next weather sensing system

Bosch has stepped up their game with their new BMP280 sensor, an environmental sensor with temperature and barometric pressure! This sensor is great for all sorts of weather/environmental sensing and can even be used in both I2C and SPI!

Adafruit HDC1008 Temperature and Humidity Sensor Breakout

A tiny temperature and humidity sensor

It's summer and you're sweating and your hair's all frizzy and all you really want to know is why the weatherman said this morning that today's relative humidity would max out at a perfectly reasonable 52% when it feels more like 77%. Enter the HDC1008 Temperature + Humidity Sensor - the best way to prove the weatherman wrong!

Calibrating Sensors

Get peak performance from all your sensors.

Most modern sensors perform quite well right out-of-the-box. But the sensor is only part of the measurement system. For best accuracy in critical applications, you will want to calibrate.

ESP8266 Temperature / Humidity Webserver

Using the ESP8266 as a microcontroller as well as a low cost wifi server.

The ESP8266 combines wifi capability with a powerful microcontroller. With the ability to run Arduino code on this microcontroller, webserver and DHT humidity and temerature sensor libraries can be used to create a very low cost IoT device

Monitor Your Home With the Raspberry Pi B+

Remotely access temperature and humidity levels (plus camera shots) around your house!

There are lots of devices on the market that allow you to monitor your home from a central interface. In this guide, we are going to make our own DIY version of such devices, based on the Raspberry Pi B+.

MCP9808 Temperature Sensor Python Library

Use a MCP9808 precision temperature sensor on a BeagleBone Black or Raspberry Pi!

Learn how to install and use the MCP9808 precision temperature sensor Python library.

MAX31855 Thermocouple Sensor Python Library

Use a MAX31855 thermocouple temperature sensor on a BeagleBone Black or Raspberry Pi!

Learn how to install and use the MAX31855 thermocouple temperature sensor Python library.

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