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Thermo5

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Simple 5 region thermostat with PIC16F690

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Description

Simple 5 region thermostat with PIC16F690 using NTC's as a sensors driving 5+1 relays. Thermostat do not use PID control but a simple on/off with hysteresis (like ordinary mechanical thermostat would - note that function in source that decides to turn heater on/off is called pid() but that's not how decision is made). Note that it's designed to measure 5 regions and control 5 groups of heaters but *all* of them are trying to reach *same* temperature. If a region goes too much off the set temperature alarm (+1 relay) will switch on. Firmware can be easily adapted to work as 5 thermometers (each region to have it's own temperature) but I did not find that useful.

Uses nokia 3310 lcd to display informations.

Source is written in CSC PICC C compiler

Hex is in "Software" directory, note that HEX has commented lines at the end (;...), some programming applications do not know how to handle HEX with comment so just remove all lines starting with ; and it will program properly.

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Additional Project Details

Intended Audience

Engineering

Programming Language

C

Registered

2012-09-16

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