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GREENHOUSE MONITORING SYSTEM

CHAPTER 1

INTRODUCTION

We live in a world where everything can be controlled and

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operated automatically, but there are still a few important sectors in our

country where automation has not been adopted or not been put to a fully fledged

use, perhaps because of several reasons one such reason is cost. One such field is

that of agriculture. Agriculture has been one of the primary occupations of mansince early civilizations and even today manual interventions in farming are

inevitable. Greenhouses form an important part of the agriculture and horticulture

sectors in our country as they can be used to grow plants under controlled

climatic conditions for optimum produce. Automating a greenhouse envisages

monitoring and controlling of the climatic parameters which directly or indirectly

govern the plant growth and hence their produce. Automation is process control of

industrial machinery and processes, thereby replacing human operators.

CURRENT SCENARIO

Greenhouses in India are being deployed in the high altitude regions wherethe sub-zero temperature up to -!" # ma$es any $ind of plantation almostimpossible and in arid regions where conditions for plant growth are hostile. %hee&isting set-ups primarily are'

MANUAL SETUP:

%his set-up involves visual inspection of the plant growth, manual irrigation of

plants, turning O( and O)) the temperature controllers, manual spraying of the

fertilizers and pesticides. It is time consuming, vulnerable to human error and hence

less accurate and unreliable.

PARTIALLY AUTOMATED SETUP'

%his set-up is a combination of manual supervision and partial automationand is similar to manual set-up in most respects but it reduces the labour involved in

terms of irrigating the set-up.

FULLY AUTOMATED:

%his is a sophisticated set-up which is well e*uipped to react to most of the

climatic changes occurring inside the greenhouse. It wor$s on a feedbac$ system

which helps it to respond to the e&ternal stimuli efficiently. Although this set-up

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overcomes the problems caused due to human errors it is not completely automated

and e&pensive.

PROPOSED MODEL FOR AUTOMATION OF GREENHOUSE%he proposed system is an embedded system which will closely monitor and

control the microclimatic parameters of a greenhouse on a regular basis round the cloc$

for cultivation of crops or specific plant species which could ma&imize their

production over the whole crop growth season and to eliminate the difficulties

involved in the system by reducing human intervention to the best possible

e&tent. %he system comprises of sensors, microcontroller and li*uid crystal

display.

When any of the above mentioned climatic parameters cross a safety

threshold which has to be maintained to protect the crops, the sensors sense the

change and the microcontroller reads this from the data at its input ports

after being converted internally to a digital form by the internal A+# of the

microcontroller. %he microcontroller then performs the needed actions by

employing relays until the strayed out parameter has been brought bac$ to itsoptimum level. ince a microcontroller is used as the heart of the system, it ma$es

the setup low cost and effective never the less. As the system also employs a #+

display for continuously alerting the user about the condition inside the

greenhouse, the entire setup becomes user friendly.

%hus, this system eliminates the drawbac$s of the e&isting setups mentioned in

the previous section and is designed as an easy to maintain, fle&ible and low costsolution.

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CHAPTER 2

BLOCK DIAGRAM

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)ig. shows bloc$ diagram of our proect /greenhouse monitoring and control system0. %hisproect consists of following bloc$s'

ensors.a1 %emperature sensor.

b1 ight sensor.c1 2umidity sensor.

d1 3oisture sensor.

3icrocontroller unit.

ignal conditioning circuit.

45&6 #+ display.

+river circuit 78elays1

a1 %emperature relay.

b1 2umidity relay.

c1 ight relay.

d1 oil moisture relay

9eyboard

:ower supply.

CHAPTER 3

BLOCK DIAGRAM DESCRIPTION

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Sensors

ensor are basically use to convert physical *uantity in electrical form there aredifferent sensor are available for various physical *uantity. In our proect wecontrol four parameters they are %emperature, light, humidity, moisture .)or thisfour parameters we use four different sensors.

a Te!"era#$re sensor%We are going to use 3;< for measuring temperature as it gives output in analog

form and re*uire critical signal conditioning. (ational semiconductor=s 3;< I#

has been used for sensing the temperature. It is an integrated circuit sensor that canbe used to measure temperature with an electrical output proportional to the

temperature 7in "#1. %he temperature can be measured more accurately with it than

using a thermistor. %he operating circuit is shown in figure. %he output voltage of

3;< is converted to temperature in "#.

%emp.7"#1 > 7 ?4!!1@4 "#

)igure' %emperature sensor circuit

& H$!'('#) sensor

We are going to use type (2- humidity sensor use in air conditioner system this

sensor since surrounding relative humidity and convert it in mille volt.

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)igure' 2umidity sensor circuit

* L'+,# sensor%

3ost common way to convert light intensity in to electrical form is +8

7ight dependent resistor1. %his special resistor gives change in resistance with

respect to change in light. %his +8 can be used in combination with variable

resistance to ma$e a voltage divider circuit.

( So'- !o's#$re sensor%

%o sense moisture in soil, carbon material rod can give change in

continuity with respect to water. %his is further connected to logic gates so when

moisture is full water pump is off.

A#!e+a. /M'*ro*on#ro--er

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)igure' :in out of Atmega

We have chosen this microcontroller because of its following features -

2igh-performance, ow-power AB8C-bit 3icrocontroller

Advanced 8I# Architecture

:owerful Instructions D 3ost ingle-cloc$ #ycle E&ecution

;6 & General :urpose Wor$ing 8egisters

)ully tatic Operation

Fp to 45 3I: %hroughput at 45 32z

On-chip 6-cycle 3ultiplier

H'+, En($ran*e Non0o-a#'-e Me!or) se+!en#s 9 ytes of In-ystem elf-programmable )lash program memory

<46 ytes EE:8O3

49 yte Internal 8A3 Write@Erase #ycles' 4!,!!! )lash@4!!,!!! EE:8O3

+ata retention' 6! years at <"#@4!! years at 6<"#

Optional oot #ode ection with Independent oc$ its

In-ystem :rogramming by On-chip oot :rogram

%rue 8ead-While-Write Operation

:rogramming oc$ for oftware ecurity

Per'",era- Fea#$res %wo -bit %imer@#ounters with eparate :rescaler, one #ompare 3ode

One 45-bit %imer@#ounter with eparate :rescaler, #ompare 3ode, and#apture

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3ode

8eal %ime #ounter with eparate Oscillator

%hree :W3 #hannels

-channel A+# in %H): and H)(@3) pac$age

Eight #hannels 4!-bit Accuracy 5-channel A+# in :+I: pac$age

i& #hannels 4!-bit Accuracy

S'+na- *on('#'on'n+ *'r*$'#%his bloc$ includes signal conditioning circuits for all the sensors.

12 L'4$'( Cr)s#a- D's"-a) Mo($-e

)igure' #+ interface

%o show parameter such as temperature, light intensity, humidity,moisture. We use Alpha numeric display instead of segment #+ displaybecause on segment reading and writing alphanumeric such as J,H,W,3 is *uitedifficult so we use alphanumeric display which has two column of 45 charactereach i.e. we can write up to ;6 characters.

Dr'er *'r*$'#

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)igure' +river circuit

8elay is basically a switching device to turn on or turn off particular devices. In

our proect we use electromagnetic type induction relay operated at 46v dc thefunction of this relay is as follows'

a Te!"era#$re re-a)

%his relay turns on or off air conditioning system so that surrounding temp is

maintained at that particular temperature.

& H$!'('#) re-a)

%his relay can turn on or off air condition system or fogger so that

relative humidity is constant.

* L'+,# re-a)

%his relay can turn on or off surrounding electrical light bulb so that

light intensity is constant in room.

( Mo's#$re re-a)

%his unit can turn on or off water pump according to sensing of relative moisture.

Ke)"a(

%here are switches to select the parameter and set the value of parameter.

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Po5er s$""-)

)igure' :ower supply

)or all I#, we re*uire < v +.#., K46v dc,-46v dc supply which can be generated by

step down transformer, full wave bridge rectifier, filter condenser and voltage

regulator I#. %wo supply voltages are re*uired for the circuit. A +# or A# 46B

mains adapter is connected to bridge rectifier 7+4- +1 via #( connector.

A%megais supplied with a regulated <B from a !< fi&ed voltage regulator. %he

unregulated voltage of appro&imately 46B is re*uired for the relay driving circuit.

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CHAPTER6

CIRCUIT 7ORKING AND

OPERATION

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Greenhouse monitoring system specially made for to control the

greenhouse environment. %he circuit has two main functions, monitoring and

control. It can measure humidity,temperature,light intensity and soil moisture.

%here is a microcontroller A%3EGA wich constantly monitors all the inputs of

the sensors and simultaneously controlles the output. %emperature sensor 3;<

gives analog output according to the variation and temperature. %he +8 is

interfaced with the microcontroller according to the levels of light intensity in

numeric form. It shows bright, dim or mid. We are using :O% to vary the humidity

input signal. %here are two copper probes to be immersed in a soil according to the

continuity between the copper probes, it detects the soil moisture. Fsing $eypad

we can set the values of the four parameters. According to the set values of the

parameters , the output devices are O( and O)). %herefore the environment is

controlled for temperature , humidity, soil moisture and light intensity.

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CHAPTER 8

SCHEMATIC DIAGRAM

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To *a-*$-a#e a-$e o9 9'-#er *a"a*'#or:0)or calculating the filter capacitor we use the following formula# > <i @ Bpf 741Where, # > value of filter capacitor

i > load currentf > fre*uency of A# supplyBp > bridge output

ince we are using 3!< the dropout voltage for 3!< is 7min. value1 6BAnd allowing 4!L of ripple we get the value of Bp as D Bp > <K6K!.> K!.Bp > .B

%he supply is designed such that it provides a load current of 4A.I > 4A

%he fre*uency of the A# supply is <!2z substituting these values in e*. no. 741We get the value of # as# > !.!4; )ut this value of # is very large and in such cases we can use two capacitorsAnd connect them in parallel.o we choose the two values as#4 > !.4μ) and #6 > 4!!! μ)2ence # > !.!!4 )(ow the voltage rating of the capacitor should not be less than

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4. ? Brms 761Where Brms is the secondary voltage of the transformer and it is 46Bubstituting the value in e*. 761We get 45.B thus we choose #6 as an electrolytic capacitor with voltage rating45B.

Re*#'9'er Ra#'n+s:-41 %he ma&imum average current 7I1 should not be less than ma&imum load#urrent 7I1. ut I > 4A thus we select I > I > 4A61 :ea$ inverse voltage rating 7Brms1 should not be less than 6. ? Brms plusA safety margin upto <!L higher to allow for line transients thus if we%a$e Brrm > 4!!!B we get after solving about <;;.5B.6!

;1 et 8s be the source resistance due to transformer winding and let its min.Balue be 8sm > !<M the ma&imum instantaneous surge current is given by

74. Brms D 4.<1 @ 8sm 7;14.< is subtracted because of voltage loss in the bridge.%hus I)3 is calculated to be ;!.5A by substituting the values in e*. no. 7;1%hus for the rectifier we choose diodes I(!!.

APPLICATIONS:041 %his circuit is eminently suitable as an electronic door loc$.61 %his circuit can be used as the switching section of a burglar alarm.;1 %his circuit can be used as an ignition bloc$ing device.

CHAPTER

PCB DESIGNDOEACC CENTRE 18




:# designing is very important part in whole proect. A wrong

:# design may cause electromagnetic interference, noise, ordisturbance. As this proect is access control system related so there arestrict border of accuracy so any e&ternal interference or faulty design or

neglecting rule should not there.

:# designing can be done either manually or on computer. +esigning a

:# using software is recommended practice, because it saves designertime, it improves accuracy to great e&tent, it re*uires less efforts.

)or designing we have used #A+%A8 software, it is widely used :#

designing software. While using #A+%A8 software designer shouldta$e care of following things'

4. #omponent of similar type should be placed in group.6. #omponent arrangement should be from left to right

horizontally N top to bottom vertically.;. Arrange components in systematic order, referring circuit.

. #omponent for internal adustments such as I8 sensor,switches etc. should be arranged near the board edge.

<. %a$e care of stray capacitance.5. 9eep the signal path as short as possible.

. upply trac$s 7vcc, gnd1 should have sufficient width.. Analog and digital circuits on the same :# should have

independent ground networ$.

. %rac$s should not overlap over each other.4!. %rac$ should have angle of <".

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APOF% )O8 G8EE(2OFE 3O(I%O8I(G P%E3

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:# +EIG( )O8 G8EE(2OFE 3O(I%O8I(G P%E3

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I9#8EE( +8AWI(G

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O+E8 3A9 +8AWI(G

CHAPTER .DOEACC CENTRE 23




PCB FABRICATION

%1 Ne+a#'e +enera#'on

%1%1 Re4$'re!en# 9or ne+a#'e +enera#'on ith film, reprographic camera, developer solution, fi&erolution, stop bath.%1%2 Pro*ess o9 ne+a#'e +enera#'on

#lean the upper and lower bed of camera with the cotton cloth.

%a$e two trays with 6<!ml water in each of them ta$e third tray and ta$e*uic$ fi&er solution in it.

9eep artwor$ on lower bed of camera on focuses of camera switch of lightschec$ dimensions on upper bed change distance between two beds to setscale.

witch off flashes of camera cut lith film and put emulsion side facingtowards lower side and apply vacuum

. E&pose for 45 second. %a$e grams of each of developer A and in firsttray.

%a$e 6-; drops of acetic acid in second tray and this will be stop bath.

(ow ta$e 6<!ml fi&er. (ow turn off vacuum ta$e out film dip into

developer and sha$e tray gently soon you will see result. %ime of developing depends on solution temperature and solution

concentration.

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8ole of visual inspection is very important for this stage. 8inse film in

water and put it in stop bath again rinse film and put it in fi&er for almost <-4!min.

%his will generate negative from artwor$.

%his film is highly sensitive to light so it should be saved from light. +evelopingtime should be correct as under developed film causes shorted trac$s and overdeveloped film causes open trac$s. 8insing is necessary after each stapes used innegative generation. )inally generated negative is not sensitive to light it can bepreserved for 4-6 years.

%2 GENERATION OF PCB

%2%1 CLEANING#leaning is very important stage as if any impurity remains on board there will bedefinitely faulty transfer. Generally cleaning is done with washing powder andscrubber and this process of cleaning is $nown as manual cleaning. After cleaningboard is $ept into oven.

%2%2 COATING%o ma$e board sensitive to light it is coated with :84!6! 7li*uid photo resist1.Biscosity of :8 plays important role in coating to ma$e solution thin thinner canbe added.

%2%3 E;POSINGIn this stage lith film is placed on coated board and e&posed to ultraviolet light forappro&imately min.

%2%6 DE<ELOPINGoard is developed in :8 developer for 4';! min. after developingQ board isdipped in to dye.

%2%8 ETCHINGEtching is chemical process of removing unwanted copper from a developedboard. Etching time depends upon solution temperature and solution concentration.After etching :8 coating and dye is removed by striping solution.

%2% CUTTINGIn this process board is cut to final size.

%2% DRILLING

oard is drilled with high speed drilling machine for insertion of leads ofcomponents.

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%2%. TINNING+rilled board is coated with li*uid flu&, soldering metal is heated to propertemperatureQ and board is dragged from soldering bath gently and cleaned withisopropyl alcohol.

%inning process increases solder ability of board, protect copper from corrosion,increases mechanical strength, increases conductivity of board.

%2%= SOLDERING)irstly clean soldering pads insert component lead gently hold soldering iron and

metal together, ta$e metal out than iron. 9eep angel of iron between ! -6! .

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CHAPTER =

SPECIFICATIONS

SR%NO COMPONENTS RATINGS >UANTITY

?1 8EI%O8 7 49 1 7 49 1 ?2 8EI%O8 7 4! 9 1 7 4! 9 1 6

?3 8EI%O8 7 5! ohms1 7 5! ohms 1 4

?6 #A:A#I%O8 7 66!μf, 6<v 1 7 66!μf, 6<v 1 4

?8 F(6!!; F(6!!; 4

? ridge rectifier7 W!G 1 7W!G1 4

? E+

?. A% 3EGA A%mega 4

?= 3 !< 3!< 4

1? # < #< 611 8EAP 7 46B dc1 :+% 46B

12 I.# O#9E%74 pin1 4 :I( +I: 6

13 I.# O#9E%745 pin1 45 :I( +I: 4

16 9EP:A+7;&41 ;J4matri& 4

18 #+745&6 dot matri&1 45&6 dot matri& 4

1 :# 7glass epo&y1 44!mm&!mm 4

1 #O((E#%O8745 :I(1 ip 4

1. #O((E#%O87; :I(1 ip 5

1= #O((E#%O876 :I(1 ip 6

2? 3;< 3;< 4

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21 +8 7<mm1 +8 4

22 :8EE% 74!91 4!9 4

23 :F2 %O O( WI%#2E - ;

26 A+A:%E8 746B1 46B 4

28 A+A:%E8 3A%I(G :A8% - 42 :OWE8 O( WI%#2 - 4

CHAPTER 11

COSTING @ ESTIMATION

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#osting and estimation is necessary to $now the capability of

our product with the e&isting product in the mar$et.

METHODOLOGY

%here are three steps of costing and estimation those are'

• In'#'a- es#'!a#'on

%his estimation is done before producing the product. It is guide to get

rough idea of the product cost.

• Ha-9 "o#en#'a- "roe*# !e#,o(

%his estimation is done after completing some part of product to chec$whether estimation is correct or wrong. %he errors produced will be

eliminated during this estimation. It also $eeps trac$ with economicalfeasibility of the manufacturing process.

• Es#'!a#'on a9#er *o!"-e#'on o9 "ro($*#

A prototype is made before actual mass production to get as ideafeasibility of the product, hence some modification in circuit or

enclosure is possible. o as to get the e&act costing and estimation isdone after the prototype is made.

In costing and estimation the cost compromises of the followingelements'

4. +evelopment cost6. +irect material cost

;. %echnology N production cost. Overheads

%he product e&ecution at +OEA## is done at prototype levelN not on prototype level N not on the production level, hence we can

ta$e only material cost into account. )or estimation it is necessary togenerate process routine, process routine is generated because it gives

idea to producer about se*uence of operation, so that product can beproduced according to process routines.

%he process routine contains following information'4. %he se*uence operations necessary to produce the product.

6. +epartment in which the operation ta$es place.;. %he machine on which the operation to be completed.

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. A brief description of operation to be completed.

<. %he shop order corresponding to the operation.

SR%NO COMPONENTS >TY% RATE TOTAL

1 8EI%O8 7 49 1 10 60

2 8EI%O8 7 4! 9 1 6 10 203 8EI%O8 7 5! ohms1 4 10 10

6 #A:A#I%O8 7 66!μf, 6<v 1 4 80 80

8 F(6!!; 4 180 180

ridge rectifier7 W!G 1 4 1?0 1?0

E+ 20 .0

. A% 3EGA 4 18?0 18?0

= 3 !< 4 1?0 1?0

1? # < 6 80 1?0

11 8EAP 7 46B dc1 :+% 2?0 .?012 I.# O#9E%74 pin1 6 80 1?0

13 I.# O#9E%745 pin1 4 80 80

16 9EP:A+7;&41 4 2?0 2?0

18 #+745&6 dot matri&1 4 12?0 12?0

1 :# 7glass epo&y1 4 3?0 3?0

1 #O((E#%O8745 :I(1 4 2?0 2?0

1. #O((E#%O87; :I(1 5 80 3?0

1= #O((E#%O876 :I(1 6 60 .0

2? 3;< 4 680 680

21 +8 7<mm1 4 1?0 1?0

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22 :8EE% 74!91 4 0 0

23 :F2 %O O( WI%#2E ; 80 180

26 A+A:%E8 746B1 4 18?0 18?0

28 A+A:%E8 3A%I(G :A8% 4 0 0

2 :OWE8 O( WI%#2 4 1?0 1?0 TOTAL Rs% ?0

CHAPTER 12

APPLICATIONS ANDAD<ANTAGES

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A""-'*a#'ons:

%he greenhouse monitoring system can control the greenhouse environment set at

particular values. %his product is specially made artificial greenhouses which use

air conditioning systems, incandescent bulbs, fogger and drip irrigation. :lants can

be grown in controlled for a healthy life.

A(an#a+es:

:lant grown in controlled environment will be healthy.

It is easy to use

It can be used for any plant as it can be set to any value of the parameter.

ow cost and user friendly.

+ecrease labour cost.

ave time as there will be no need to chec$ temperature, humidity, light

intensity and soil moisture.

It is easy for maintenance.

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CHAPTER 13

PROGRAMMING DESIGN

Rinclude [email protected]

@@Rinclude Sstdio.hT

Rinclude Sstring.hT

Rinclude SavrUeeprom.hT

Rinclude SutilUdelay.hT

Rinclude Vlcd.hV

Rdefine fogger 4@@:+!

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Rdefine lamp 6@@:+4

Rdefine heater @@:+6

Rdefine pump @@:+;

Rdefine Out:ort :O8%+

Rdefine ampMO))71 7Out:ort N> 74SS:+411

Rdefine ampMO(71 7Out:ort X> 74SS:+411

Rdefine 2eaterMO))71 7Out:ort N> 74SS:+611

Rdefine 2eaterMO(71 7Out:ort X> 74SS:+611

Rdefine )oggerMO))71 7Out:ort N> 74SS:+!11

Rdefine )oggerMO(71 7Out:ort X> 74SS:+!11

Rdefine :umpMO))71 7Out:ort N> 74SS:+;11

Rdefine :umpMO(71 7Out:ort X> 74SS:+;11

void how3ain3enu71Q

void et%emp71Q

void et8h71Q

void etlight71Q

void :umpMonMoff71Q

void chec$Malrm71Q

unsigned int $u,$$Q

uintMt temp,tempMset,rh,rhMset,pump,pumpMset,temp4,3emYZQ

uintMt light,lightMset,mystrYZQ

void delayMms7unsigned int de1

[

unsigned int rr,rr4Q

for 7rr>!QrrSdeQrrKK1

[

for7rr4>!Qrr4S!!Qrr4KK1 @@;<

[

asm7VnopV1Q

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\

\

\

int readMadc7char ch1

[

A+3FJ > 7!b!4!!!!!! X ch1Q

A+#8A > !&#Q

while 7]7A+#8A N 74SSA+I)111Q

$u > A+#Q

A+#8A X> 4SSQ

@@$u > 7$p @ 6<<1 ^ 4!!!Q

return $uQ

\

void Wait71

[

uintMt iQ

for7i>!QiS6!QiKK1

MdelayMloopM67!1Q

\

uintMt :8EBM:I(#>!&))Q

^@ )unction to test the current status of $eys7! to 61

returns

! if (O% pressed

4 if :ressed ^@

uintMt Get9eytatus7uintMt $ey1

[

return 7]7:I(# N 74SS$ey111Q

\

@^

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#+Writetring7V Anil 9umar V1Q

#+WritetringJP7!,4,V 76!!@+@<1 V1Q

delayMms74!!!1Q

@@eepromMreadMbloc$77void^1N8A3string, 7const void^1N(onBolatiletring, 4!1Q

eepromMreadMbloc$77void^1N3em, 7const void^14, 1Q

tempMset > 3emY!ZQ

rhMset > 3emY4ZQ

lightMset > 3emY6ZQ

pumpMset > 3emY;ZQ

++8# > !&!!Q

@@:O8%#X>774SS:#51X74SS:#<1X74SS:#11Q

++8+ > !b!!!!4444Q

:O8%#X>774SS:#<1X74SS:#11Q

while741

[

uintMt iQ

float $pQ

#+#lear71Q

#+Writetring7V%' # '+ryV1Q

#+WritetringJP7!,4,V82' L '+imV1Q

$p > readMadc7!1Q

$$ > $pQ

$p > 77$p @ 61 ̂ 4!1Q @@ %emp reading

#+WriteIntJP7;,!,$p,;,41Q @@ )loat value

if7$$ T tempMset1

2eaterMO))71Q @@2eater O))

else

2eaterMO(71Q @@2eater O(

$$ > readMadc741Q @@ 82 reading

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$p > $$Q

$p > 7$p @ 4!6;1 ^ 4!!!Q

#+WriteIntJP7;,4,$p,,41Q

if7$$ T rhMset1

)oggerMO))71Q @@)ogger O))

else

)oggerMO(71Q @@)ogger O(

$$ > readMadc761Q

$p > $$Q @@ ight reading

$p > 77$p @ 4!6;1 ^ 4!!1Q

$$ > $pQ

@@#+WriteIntJP7;,4,$$,;,!1Q

if7$$ S 5!1[

#+WritetringJP746,4,VriV1Q

ampMO))71Q @@ight O))

\

else if775! S $$1 NN 7$$ S !11[

#+WritetringJP746,4,V3idV1Q

ampMO))71Q @@ight O))

\

else if7$$ T 41[

#+WritetringJP746,4,V+imV1Q

ampMO(71Q @@ight O(

\

if77:I(# N !&!11[

#+WritetringJP746,!,V+ryV1Q

:umpMO(71Q @@:ump O(

\

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if7]7:I(# N !&!11[

#+WritetringJP746,!,VWetV1Q

:umpMO))71Q @@:ump O))

\

@@#+WritetringJP7!,4,V82' L '+imV1Q

@@8ead adc and update display

@@Wait ome time and $eep testing $ey input

for7i>!QiS6!QiKK1

[

if7Get9eytatus7<11

[

@@Go %o 3ain 3enu

how3ain3enu71Q

MdelayMloopM67!1Q

MdelayMloopM67!1Q

MdelayMloopM67!1Q

\

MdelayMloopM67<!!!1Q

\

\

\

@@--------------------------------------------------------------------------------------------------@@

void how3ain3enu71

[

@@%he 3ain 3enu

char ^menuMitemsYZ>[ Vet %empV,

Vet 8hV,

Vet ightV,

Vet :umpV,

DOEACC CENTRE 39




VHuitV

\Q

uintMt menuMcount><Q

uintMt selected>!Q

MdelayMloopM67!1Q

MdelayMloopM67!1Q

while741

[

#+#lear71Q

#+Writetring7V 3ain 3enu V1Q

#+WritetringJP76,4,menuMitemsYselectedZ1Q

#+WritetringJP7!,4,VSV1Q

#+WritetringJP74<,4,VTV1Q

if7Get9eytatus7<11

[

@@eft 9ey7(o 41 is pressed

@@#hec$ that it was not pressed previously

if7]Get:rev9eytatus7<11

[

if7selected ]>!1

selected--Q

\

\

if7Get9eytatus711

[

@@8ight 9ey7(o !1 is pressed


if7]Get:rev9eytatus711

[

DOEACC CENTRE 40




if7selected ]>7menuMcount-411

selectedKKQ

\

\

if7Get9eytatus7511

[

@@Enter 9ey :ressed



[

@@#all Appropriate )unction

switch 7selected1

[

case !'

et%emp71Q

brea$Q

case 4'

et8h71Q

brea$Q

case 6'

etlight71Q

brea$Q

case ;'

:umpMonMoff71Q

brea$Q

case '

returnQ@@Huit

\

DOEACC CENTRE 41




\

\

:8EBM:I(#>:I(#Q

MdelayMloopM67<!!!1Q

\

\

void et%emp71

[

uintMt sel>!Q

while741

[

#+#lear71Q

#+Writetring7V!! +O(E +#elV1Q

#+WriteIntJP7!,!,tempMset,6,!1Q @@ no float value

@@+raw :ointer

#+WritetringJP7sel^;,4,V__V1Q

@@Input Fp $ey

if7Get9eytatus7<11

[


[

if7sel>>!1

[

@@temperature set

if7tempMset>>1

[

tempMset>4Q

\

else

DOEACC CENTRE 42




[

tempMsetKKQ

\

\

if7sel >> 41

[

@@O9

brea$Q

\

\

\

@@Input +own

if7Get9eytatus711

[


[

if7sel>>!1

[

@@%emp set

if7tempMset>>41

[

tempMset>Q

\

else

[

tempMset--Q

\

\

if7sel >> 41

DOEACC CENTRE 43




[

@@O9

brea$Q

\

\

\

if7Get9eytatus7511

[


[

@@#hange election

if7sel>>41

sel>!Q

else

selKKQ

\

\

:8EBM:I(#>:I(#Q

MdelayMloopM67;!!!!1Q

\

@@-------------------EE:8O3-------------------------------

3emY!Z > tempMsetQ

3emY4Z > rhMsetQ

3emY6Z > lightMsetQ

eepromMwriteMbloc$ 77const void^1N3em, 7void ^14, 1Q

@@--------------------------------------------------------

#+#lear71Q

#+Writetring7V3essage ]V1Q

#+WritetringJP7!,4,V(ew %emp etV1Q

DOEACC CENTRE 44




uintMt iQ

for7i>!QiS4!QiKK1

MdelayMloopM67!1Q

\

@@--------------------------------------O( %I3E------------------------------------------------------------

void et8h71

[

uintMt sel>!Q

@@ read time from EE:8O3

while741

[

#+#lear71Q

#+Writetring7V!! +O(E 82V1Q

#+WriteIntJP7!,!,rhMset,6,!1Q @@ no float value

@@+raw :ointer


@@Input Fp $ey

if7Get9eytatus7<11

[


[

if7sel>>!1

[

@@2our

if7rhMset>>1

[

rhMset>4Q

\

else

DOEACC CENTRE 45




[

rhMsetKKQ

\

\

if7sel >> 41

[

@@O9

brea$Q

\

\

\

@@Input +own

if7Get9eytatus711

[


[

if7sel>>!1

[

@@2our

if7rhMset>>41

[

rhMset>Q

\

else

[

rhMset--Q

\

\

if7sel >> 41

DOEACC CENTRE 46




[

@@O9

brea$Q

\

\

\

if7Get9eytatus7511

[


[

@@#hange election

if7sel>>41

sel>!Q

else

selKKQ

\

\

:8EBM:I(#>:I(#Q


\

@@-------------------EE:8O3-------------------------------

3emY!Z > tempMsetQ

3emY4Z > rhMsetQ

3emY6Z > lightMsetQ


@@--------------------------------------------------------

#+#lear71Q

#+Writetring7V 3essage ]V1Q

#+WritetringJP7!,4,V(ew 82 etV1Q

DOEACC CENTRE 47




uintMt iQ

for7i>!QiS4!QiKK1

MdelayMloopM67!1Q

\

@@--------------------------------------- O)) %I3E---------------------------------------------

void etlight71

[

uintMt sel>!Q

@@ read from EE:8O3

while741

[

#+#lear71Q

#+Writetring7V!! +O(E ightV1Q

#+WriteIntJP7!,!,lightMset,6,!1Q @@no float value

@@+raw :ointer


@@Input Fp $ey

if7Get9eytatus7<11

[


[

if7sel>>!1

[

@@light set

if7lightMset>>1

[

lightMset>4Q

\

DOEACC CENTRE 48




else

[

lightMsetKKQ

\

\

if7sel >> 41

[

@@O9

brea$Q

\

\

\

@@Input +own

if7Get9eytatus711

[


[

if7sel>>!1

[

if(light_set==1)

[

lightMset>Q

\

else

[

lightMset--Q

\

\

if7sel >> 41

DOEACC CENTRE 49




[

brea$Q

\

\

\

if7Get9eytatus7511

[


[

@@#hange election

if7sel>>41

sel>!Q

else

selKKQ

\

\

:8EBM:I(#>:I(#Q


\

@@(ow save time to EE:8O3------------------------------------------------------------------

3emY!Z > tempMsetQ

3emY4Z > rhMsetQ

3emY6Z > lightMsetQ


@@-----------------------------------------------------------------------------------------

#+#lear71Q


DOEACC CENTRE 50




#+WritetringJP7!,4,V(ew ight etV1Q

uintMt iQ

for7i>!QiS4!QiKK1

MdelayMloopM67!1Q

\

@@------------------------------------------------alram on and off------------------

void :umpMonMoff71

[

uintMt sel>!Q

@@ read from EE:8O3

while741

[

#+#lear71Q

#+Writetring7V--- +O(EV1Q

#+WriteIntJP7!,!,pumpMset,6,!1Q @@ no float value

if7pumpMset1

[

#+WritetringJP7!,!,VA#%V1Q

\

else

[

#+WritetringJP7!,!,V+E#V1Q

\

#+WritetringJP7sel^5,4,V__V1Q

if7Get9eytatus7<11

[


[

if7sel>>!1

DOEACC CENTRE 51




[

if7pumpMset>>!1

[

pumpMset>4Q

\

else

[

pumpMset>!Q

\

\

if7sel >> 41

[

brea$Q

\

\

\

if7Get9eytatus711

[


[

if7sel>>!1

[

if7pumpMset>>!1

[

pumpMset>4Q

\

else

[

pumpMset>!Q

DOEACC CENTRE 52




\

\

if7sel >> 41

[

brea$Q

\

\

\

if7Get9eytatus7511

[


[

if7sel>>41

sel>!Q

else

selKKQ

\

\

:8EBM:I(#>:I(#Q


\

@@-------------------EE:8O3-------------------------------

3emY!Z > tempMsetQ

3emY4Z > rhMsetQ

3emY6Z > lightMsetQ

3emY;Z > pumpMsetQ


@@--------------------------------------------------------

DOEACC CENTRE 53




#+#lear71Q


#+WritetringJP7!,4,V:ump etV1Q

uintMt iQ

for7i>!QiS4!QiKK1

MdelayMloopM67!1Q

\

CHAPTER 16

DATASHEETS

DOEACC CENTRE 54




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DOEACC CENTRE 56




DOEACC CENTRE 57




DOEACC CENTRE 58




DOEACC CENTRE 59




DOEACC CENTRE 60




DOEACC CENTRE 61




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DOEACC CENTRE 63




DOEACC CENTRE 64




DOEACC CENTRE 65




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DOEACC CENTRE 68




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DOEACC CENTRE 70




DOEACC CENTRE 71




DOEACC CENTRE 72




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DOEACC CENTRE 74




DOEACC CENTRE 75




DOEACC CENTRE 76




BIBLOGRAPHY

BOOK AUTHOR :ractical electronicshandboo$

an inclair N `ohn+unton

%he !<4 microcontrollerand Embedded systems

3uhammad Ali 3azidi,`anice Gillespie 3azidi,

8olin +.3c$inal:rinciple electronics A.:.3alvino

:rinted circuit board design W. #. osshart

NOMENCLATURE

I8' infraredIO' input@output

DOEACC CENTRE 77




#+' A digital display that uses li*uid crystal cells

E+' ight Emitting +iode8A3' 8andom Access 3emory

8A3' tatic 8andom Access 3emory

EE:8O3' Electrically Erasable :rogrammable 8ead Only 3emory

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