1-- Here am designed a Transmitter and Receiver. Which will receive the key code as per the
picture given bellow.
.
In this first two bits in key 1 are high for 1ms and low for 5ms, this can be identify the receiver which detect a new signal . Next six (1ms high and 2ms low)bits, thats are d0 to d5,you can give
this as different values for different keys as per your requirement.After 100ms code will repeat.
2--Transmitter and Reciever circuit Diagram
TXr circuit
Rxr Circuit
3--Program for Transmitter and Receiver
This program is compiled with Wiz_C compiler
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Txr
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#include<stdio.h>
#include<pic.h>
#include<PortBits.h>
#include<delays.h>
unsigned int checktime=0;
bit var1=0,var2=0,var3=0,var4=0,var5=0,var6=0;
void main()
{ANSEL=0;
CMCON=7;
TRISA=0b111110;
TRISC=0b111111;
PORTA=PORTC=0;
/////////////////////////////////////////////////////
Wait(1000);
for(;;)
{
Wait(100);
if(bRA1==1||bRA2==1||bRC0==1||bRC1==1)
{
var1=1;var2=1;var3=bRC1^1;var4=bRC0^1;var5=bRA2^1;var6=1;
///////starting bit
bRA0=1;
Wait(1);
bRA0=0;
Wait(5);
bRA0=1;
Wait(1);
bRA0=0;
Wait(5);
}
//////////Data bit///////////////////////////
bRA0=var1;
Wait(1);
bRA0=0;
Wait(2);
bRA0=var2;
Wait(1);
bRA0=0;
Wait(2);
bRA0=var3;
Wait(1);
bRA0=0;
Wait(2);
bRA0=var4;
Wait(1);
bRA0=0;
Wait(2);
bRA0=var5;
Wait(1);
bRA0=0;
Wait(2);
bRA0=var6;
Wait(1);
bRA0=0;
Wait(2);
//////////////////////////////
var1=var2=var3=var4=var5=var6=0;
}
}
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Txr Hex file
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:020000040000FA
:1000000000005F30A6000428263084003830A400A9
:10001000840A8001A40B08280D281F2826078400C5
:10002000122884000008A000840A0008A10008002B
:10003000A00026088400A603200880000800830191
:100040008A118312BA01BB018312B8108312B8114E
:100050008312B8128312B8138312B9108312B91124
:1000600083018A014C288A1101300E20840A8A11EA
:100070003B208A01080020082104031908000130F0
:10008000F920000000005430F5208A110A12A00364
:10009000200F3B28A1033B288316910183120730D0
:1000A000990083163E3085003F3087008312870118
:1000B000850103301820E830182033200230A607CD
:1000C000003018206430182033200230A607003991
:1000D0008518013EFF3E03197F2800390519013EAE
:1000E000FF3E03197F2800390718013EFF3E031920
:1000F0007F2800398718013EFF3E031DA028B81451
:10010000B81500398718013E013A0038B812031DAE
:10011000B81600390718013E013A0038B813031D1C
:10012000B81700390519013E013A0038B910031D0E
:10013000B914B91505140030C32005140030C320CC
:100140000039B818013E0510031D05140030D220F7
:100150000039B819013EE120B81A013EE120B81B70
:10016000013EE120B918013EE120B919013E051018
:10017000031D05140030D220B911B910B813B812FC
:10018000B811B81060281820013018203320023030
:10019000A607051000301820053018203320023043
:1001A000A607080018200130182033200230A607C7
:1001B0000510003018200230182033200230A60726
:1001C00008000510031D0514003018200130182008
:1001D00033200230A6070510003018200230182006
:1001E00033200230A60700390800A200A20BF6282F
:0E01F0000800A300F030F520A30BFA28080049
:10420000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBE
:10421000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFAE
:10422000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF9E
:10423000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8E
:10424000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7E
:10425000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6E
:10426000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5E
:10427000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF4E
:04400E000430FFFF7C
:00000001FF
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Rxr
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#include<stdio.h>
#include<pic.h>
#include<PortBits.h>
#include<delays.h>
unsigned int checktime=0;
bit var1=0,var2=0,var3=0,var4=0,var5=0,var6=0;
void main()
{
ANSEL=0;
CMCON=7;
TRISA=1;
TRISC=0;
PORTA=PORTC=0;
/////////////////////////////////////////////////////
for(;;)
{
if(bRA0==1)
{
Wait(1);
Wait(.005);
Wait(.005);
Wait(.005);
Wait(.005);
Wait(.005);
Wait(.005);
if(bRA0==0)
{
Wait(5);
if(bRA0==1)
{
Wait(1);
if(bRA0==0)
{
Wait(5);
///////////
if(bRA0==1)
{var1=1;}
else
{var1=0;}
Wait(3);
if(bRA0==1)
{var2=1;}
else
{var2=0;}
Wait(3);
if(bRA0==1)
{var3=1;}
else
{var3=0;}
Wait(3);
if(bRA0==1)
{var4=1;}
else
{var4=0;}
Wait(3);
if(bRA0==1)
{var5=1;}
else
{var5=0;}
Wait(3);
if(bRA0==1)
{var6=1;}
else
{var6=0;}
///////////////
Wait(500);
}
}
}
}
if(var1==1&&var2==1&&var3==1&&var4==1&&var5==1&&var6==1)
{bRA1=bRA1^1;Wait(10);}
if(var1==1&&var2==1&&var3==1&&var4==1&&var5==0&&var6==1)
{bRA2=bRA2^1;Wait(10);}
if(var1==1&&var2==1&&var3==1&&var4==0&&var5==1&&var6==1)
{bRC0=bRC0^1;Wait(10);}
if(var1==1&&var2==1&&var3==0&&var4==1&&var5==1&&var6==1)
{bRC1=bRC1^1;Wait(10);}
var1=0;var2=0;var3=0;var4=0;var5=0;var6=0;
}}
///////////////////////////////////////////////////////
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Rxr Hex file
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:020000040000FA
:1000000000005F30A6000428263084003830A400A9
:10001000840A8001A40B08280D281F2826078400C5
:10002000122884000008A000840A0008A10008002B
:10003000A00026088400A603200880000800830191
:100040008A118312BA01BB018312B8108312B8114E
:100050008312B8128312B8138312B9108312B91124
:1000600083018A0133288316910183120730990096
:1000700083160130850087018312870185010039CD
:100080000518013EFF3E031D852800301820013071
:1000900018205F214A214A212221031D852832216F
:1000A000031D852800301820013018205F212221EF
:1000B000031D85283221031D5F28B8146028B8105D
:1000C0003E21031D6528B8156628B8113E21031D81
:1000D0006B28B8166C28B8123E21031D7128B8177A
:1000E0007228B8133E21031D7728B9147828B91057
:1000F0003E21031D7D28B9157E28B9110130182035
:10010000F43018205F210230A6070421031DA02827
:100110001321031DA0281D21031DA0280921031D53
:10012000A0281821031DA0280E21031DA028003996
:100130008518013E013A00388510031D85142A21D7
:100140000421031DBF281321031DBF281D21031DEA
:10015000BF280921031DBF280039B918013E031427
:100160000038031DBF280E21031DBF2800390519C3
:10017000013E013A00380511031D05152A2104210D
:10018000031DDE281321031DDE281D21031DDE288B
:100190000039B81B013E03140038031DDE28182166
:1001A000031DDE280E21031DDE2800390718013E3D
:1001B000013A00380710031D07142A210421031DEA
:1001C000FD281321031DFD280039B81A013E031430
:1001D0000038031DFD280921031DFD281821031DDA
:1001E000FD280E21031DFD2800398718013E013A24
:1001F00000388710031D87142A21B810B811B812CF
:10020000B813B910B9113F280039B818013EFF3EA4
:1002100008000039B81B013EFF3E08000039B9193B
:10022000013EFF3E08000039B819013EFF3E0800BC
:100230000039B918013EFF3E08000039B81A013EE6
:10024000FF3E08000230A60700390518013E0314DE
:1002500000380800003018200A3018205F210230D2
:10026000A607080000301820053018205F21023052
:10027000A60700390518013EFF3E0800003018208F
:10028000033018205F210230A60700390518013E0F
:10029000FF3E08000230A60700301820003018206A
:1002A0005F210230A60700301820003018205F219F
:1002B0000230A60700301820003018205F298A116C
:1002C00001300E20840A8A1167218A010800200863
:1002D00021040319080001307C2100000000543083
:1002E00078218A110A12A003200F6729A103672928
:1002F000A200A20B79290800A300F0307821A30BFB
:040300007D2908004B
:10420000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBE
:10421000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFAE
:10422000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF9E
:10423000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8E
:10424000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7E
:10425000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6E
:10426000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5E
:10427000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF4E
:04400E000430FFFF7C
:00000001FF
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if you haven't Wiz_c compiler then copy Hex file of Txr and paste to notepad and save as Txr.hex.
similarly in Rxr. Burn this two file into PIC16f676 one for Rxr other for Txr.
Simple Working
After completion of hardware please press key 1, then Txr will produce corresponding IR code
as per the above picture ,which will transmit through the photo diode.IR photo detector will receive
this IR signal and produce negative out put.Which will be converted to positive through BC557 and
given to pic. which will decode the code and ON corresponding output pin (pin 13--A1).If same
key press again output will off(toggle).similarly you can control 4 different switches Independently.
You can increase the number of keys by just giving more keys into all pins of Txr.And change
d0- -d6 values for each keys as your own way.Design corresponding Rxr code.
d0- -d6 values for each keys as your own way.Design corresponding Rxr code.
4--Proteus Simulation file is included with dowloading pack
- To Download complete file related to this project Click here
If you have remote hand set of any company then you need only design the reciever circuit corresponding to that remote transmitter, to know about that please click here
(Don't forget write the comments about this project)
(Don't forget write the comments about this project)
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