Implementing a PID Controller Using a PIC18 MCU


INTRODUCTION
Continuous processes have been controlled by
feedback loops since the late 1700’s. In 1788, James
Watt used a flyball governor on his steam engine to
regulate its speed. The Taylor Instrument Company
implemented the first fully functional Proportional,
Integral and Derivative (PID) controller in 1940.
Although feedback control has come a long way since
James Watt, the basic approach and system elements
have ....etc

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FRAM MCUKey Strengths and Applications

Introduction
Ferroelectric Random Access Memory (FRAM) microcontroller (MCU), which features embedded, non-volatile FRAM, is part of the company’s 8-bit microcontroller 8FX family. The new embedded FRAM memory technology can be configured either as Read-Only Memory (ROM) or Random- Access Memory (RAM). The FRAM microcontroller has the added benefits of high-speed programming and low power consumption. The FRAM memory technology, its benefits, applications, to ....etc

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ABSTRACT
Bio-technologies have evolved into viable treatment technologies not only for odorouscompounds, but more complicated mixed airstreams that include volatile organiccompounds (VOCs). Digestion of compounds such as benzene, toluene, ethylbenzeneand xylene (BTEX) have been of particular interest in petroleum processes and clean-upprojects as an alternative treatment to incineration technologies.A bio-oxidation treatment process, bioremediation, has been successfully implemented ina variety of projects and conditions. Tak ....etc

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lookingfor code for interfacing pir sensor with 8051 mc ....etc

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i like a copy from the automation technologt for greenhouse ....etc

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we are doing a PROJECT ON THIS TOPIC SO P
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org 00h

mov p1,#0ffh
mov p2,#00h
mov a,p1
jnz check
;jz loop

loop:
mov a,p1
jnz check
jz loop

check:
acall delay
mov a,p1
jnz check1
jz loop

check1:
mov p2,#0ffh
acall dlay1
mov p2,#00h
sjmp loop

delay:
mov r4,#255d
loop3:

mov r1,#255d
loop2:
mov r3,#255d
loop1:
djnz r3,loop1
djnz r1,loop2
djnz r4,loop3
ret

dlay1:
mov r4,#10d
lop3:

mov r1,#255d
lop2:
mov r3,#255d
lop1:
djnz r3,loop1
djnz r1,loop2
djnz r4,loop3
ret

end


....etc

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please give me the pdf document of monitor and control of greenhouse environment ....etc

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I have this project from electronic for you magzine march 2012
i want code of this project in .C or .hex ....etc

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FEATURES
ANALOG I/O
8-channel, 247 kSPS, 12-Bit ADC
DC performance: ±1 LSB INL
AC performance: 71 dB SNR
DMA controller for high speed ADC-to-RAM capture
2 12-bit (monotonic) voltage output DACs
Dual output PWM/Σ-Δ DACs
On-chip temperature sensor function: ±3°C
On-chip voltage reference
Memory
62 kB on-chip Flash/EE program memory
4 kB on-chip Flash/EE data memory
Flash/EE, 100 Yr retention, 100,000 cycles of endurance
2304 bytes on-chip data RAM
8051-based core
8051-compatible instruction set (16 MHz maximum)
32 k ....etc

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