DIY Frugal CO₂ Sensor: Arduino & inexpensive parts to build a sub-$100 system to track and evaluate COVID-19 risk using CO₂ levels to estimate ventilation and occupancy.

int Pin_Sensor = 5; // para recoger la señal que nos envia el sensor de obstáculos int Pin_Led = 13; // Para el pin usaremos para encender un led que nos avise de obstáculo detectado, en los arduino ...

Arduino, on the other hand, offers prototyping boards not tailored for in-the-field deployments. Also, the boards are not specifically designed for ultra low power operation required for long-lasting ...

For example, let's consider if only one sensor is triggered and the second sensor does not detect movement within the timeout period, then it completely ignores the detection to avoid a false trigger.

In this tutorial, we will discuss DS18b20 Temperature Sensor pinout, working, and how to interface DS18B20 Sensor with Arduino. This article includes Complete Arduino DS18B20 Sensor Code, Circuit ...

In this article, I have added three sensors with Arduino UNO and user can choose the required sensor with the help of keypad.

This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

How fast does your heart beat? It’s a tough question to answer, because our heart rate changes all the time depending on what we’re doing and how our body is behaving. However, ...