August 2008
Beginner to intermediate
304 pages
6h 2m
English
Content preview from Programming 8-bit PIC Microcontrollers in C
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5.2. PIC16 C Temperature Controller
• Basic system
• Software design
• Implementation
In this section, the software design principles just outlined are applied to a typical application, a temperature control system. The schematic of the demo hardware is shown in Figure 5.2. The TEMP pot represents a temperature sensor that outputs a voltage of 0–5 V. If a scaling of 100 mV/°C is assumed, the range is 0–50°C, with 2.5 V representing 25°C.
Figure 5.2. Temperature Control System
System Operation
The sensor is connected to AN1, the ADC channel 1. A SET pot provides the reference temperature for the system. If the measured temperature is below the set ...
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