+ LCD/OLED can be used to measure body temperature or to detect movement... in Celsius and Fahrenheit!
It is a miniature counterpart of radio altimeter used on commercial aircrafts to be used with RC aircrafts and multirotors.
Project tutorial by AeroGeeks
It might be the simplest room temperature and humidity - no breadboard attached.
Project tutorial by adrakhmat
In this tutorial, you will learn how to use a soil moisture sensor. Practical examples are also provided to help you master the code.
In this tutorial, you will learn how to calibrate and use MQ9 gas sensor with an Arduino board.
Learn how to use a PIR motion sensor to detect movement. You will also learn how PIR motion sensors work and how to use them.
A modular orientation and acceleration data logger using a pair of ultrasonic sensors, RF transceivers, and a 1Sheeld.
Project tutorial by HyperChiicken
Simple project to measure temperature (with two sensors) and humidity, and send them to the terminal (monitor) and also to a LCD display.
Project in progress by brunogomezgil
This little project will show you how to use a soil moisture sensor.
How to use the small module to measure distance for high frequency applications... or low.
Project tutorial by SurtrTech
Use three HC-SR04 ultrasound sensors and two battery displays to show you how close the obstacles are and from which side.
Now we can check out the depth of the sea level by using a pressure sensor (MS5803–01 BA) connected to an Arduino, and display sensor data.
Project showcase by Varul Jain
Copy colours from outside environment.
Project tutorial by Vishwas Navada
In this project, we're going to use the DHT11 humidity and temperature sensor to calculate the average temperature and humidity every hour.
Project tutorial by lefteris1993
Build an Arduino heart rate monitor with a MAX30102 sensor and a 16x2 LCD.
Project tutorial by Mirko Pavleski
Read data from an absolute orientation sensor without writing any code!
by Matt Wayland
How to connect GPS, SONAR, sensors, auto pilot units etc. in ships and boats via NMEA 0183 to Arduino.
Project tutorial by hwhardsoft
This project will show you how to use temperature and hmidity (DHT11 and DHT22) sensors with an Arduino card.
As the title says, this is a pretty simple PIR motion controlled relay using an Arduino Nano.
Project tutorial by HeathenHacks
+ OLED display, measures in imperial and metric.
Create a burglar-tripwire with the ultrasonic sensor.
Project tutorial by Will_the_Star
Measure distance using JSN SR-04T waterproof ultrasound module and an LCD I2C (cm/inches).
Periodically measure environmental conditions and send them to WolkAbout IoT Platform to monitor the environment remotely.
Project tutorial by WolkWriter
Using one single module and a proper library you'll be able to measure any AC voltage like a TRMS multimeter.
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