ABSTRACT
This chapter explores one wire hardware and software interfacing with 8051 microcontroller. It discusses the interfacing of devices with 8051 and NuttyFi with the help of circuit diagram and programming. DS18B20 is a temperature sensor, which can be used in industrial applications where high accuracy is required. Sensor has three pins in total, Vcc, Gnd, and data pin. The system comprises +12V power supply, +12V to +5V converter, 8051 microcontroller, 16x2 LCD, and DS1820 sensor with breakout board. The objective of the system is to read the data from sensor with one wire protocol. The chapter presents description of interfacing of DS1820 with 8051.
