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Contactless payment systems
2 microcontroller pins needed for communication (RXD/TXD)
Applications:
Arm Length : 21cm
Output voltage: 4
Digital Temperature Sensor DS18B20 7408 Contactless payment systemsIntroduction : Digital Temperature Sensor DS18B20 is a one wire digital temperature sensor. This means that it just requires one data line (and GND) to communicate with the Arduino. Each DS18B20 temperature sensor has a unique 64 bit serial code. It can measure a wide range of temperature from 55C to +125 with a decent accuracy of 5C. Each sensor has a unique address and requires only one pin of the MCU to transfer data so it a very good choice for
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