void loop () { delay (2000); // Wait for 2 seconds between measurements float humidity = dht.readHumidity (); // Read humidity value from sensor float temperatureC = dht.readTemperature (); // Read ...

The Arduino keeps on processing the data from the ultrasonic sensor, and it quickly triggers the Audio alert when it detects something nearby. Here, you’ll learn how to interface the ultrasonic sensor ...

In this article, we are going to look at a capacitive contactless liquid-level sensor XKC-Y26-V. We will go through its features and we will also see how to interface it with an Arduino. XKC-Y26-V ...

Arduino Code for Digital Thermometer The code for temperature measurement using LM35 is described here. A library for the LCD unit is included and then data and control pins for the LCD and ...

PIR Pin “+” connects to Arduino +5 PIR Pin “-” connects to Arduino gnd PIR Pin “out” connects to Arduino Digital 2 Here is the Arduino code for the Parallax sensor ...

Note that with the “DFR” sensor, we get a signal output very close to VCC (in digital mode) when the sensor is not submerged or is in clear water (and a bit lower than that in analog mode). Here’s one ...

This article should acquaint you with basic Arduino programming and show you how to write programs that interact with objects in the real world. (A mandatory disclaimer: the last time I really studied ...