This circuit diagram illustrates a fire and smoke detection system using an Arduino UNO R4 WiFi, MQ2 smoke sensor, and a flame sensor (fire sensor). The Arduino is the central controller that receives ...

In some Arduino devices that work with WiFiNINA/WiFi101 firmwares, use SMTPMessage::timestamp = WiFi.getTime(); Half Line-Break Depending on server policy, some SMTP server may reject the email ...

An Arduino Uno (CH340G clone) reads temperature and humidity from a DHT11 sensor and computes 10+ environmental metrics (heat index, dew point, enthalpy, humidex, vapor pressures, etc.), outputting ...

As we all know, wearing a helmet is mandatory in most countries, including India while driving a vehicle, not just because of police fines but to save our own lives. Since it holds such an important ...