OneWire temperature measurement and connection methods
Hello, I'm giving you a guide that many people are looking for, especially for beginners. All beginners try to create, for example, a weather station where they want to measure temperatures, pressure and other quantities. Temperature sensors are most often used by the Dallas Maxim Temperature Sensors (DS18B20) These sensors support the OneWire bus. After one wire it is possible to send data + "electrique". Each DS18B20 sensor has a different address. This means that it is possible to read from each sensor separately, according to its index (the order of the cable). The power supply is just 3.3V, while at 5V the sensors are soft and the measurement is inaccurate. For each connection, it is necessary to use a 4.7KΩ resistor. Wiring for Parasite Power Mode: Wiring for Normal Power Mode: Wiring for one DS18B20 sensor connected to a digital Arduino Uno pin: WARNING at WIRING! Depending on the sensor type, it is possible that Vcc and GND have it opposite. Sample Ard