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Radio Control Circuit using AT89C2051

2015-03-02 21:39  
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This circuit is a series transmitter and receiver data via radio waves. This circuit is very simple and easy to manufacture. Here is a schematic drawing :

 

Transmitter Radio Control Circuit using AT89C2051 400x207 Radio Control Circuit using AT89C2051

Part List for Transmitter

R1: 47k
R2,R3,R4,R5: 10K

IC :HT12E

SW1,SW2,SW3,SW4: push button switch

ic module: fm TX module

Receiver Radio Control Circuit using AT89C2051 400x310 Radio Control Circuit using AT89C2051

Part List for Receiver

R1 : 56k
R2 : 68k
R3,R4,R5,R6 : 10k

C1 : 1uF/16v
C2,C3 : 33pF

X1 : 12Mhz

K1,K2 : standart relay 12V

U1 : AT89C2051
U2 : 74LS04
U3 : FM receiver module
IC4 : HT12D

 

Source Code

VT  EQU P3.0

DATA1 EQU P3.2
DATA2 EQU P3.3
DATA3 EQU P3.4
DATA4 EQU P3.5

DEV1 EQU P1.7
DEV2 EQU P1.6
DEV3 EQU P1.5
DEV4 EQU P1.4

CSEG AT 0 ; RESET VECTOR
;---------==========----------==========---------=========---------
; PROCESSOR INTERRUPT AND RESET VECTORS
;---------==========----------==========---------=========---------

ORG 00H   ; Reset
JMP MAIN

;---------==========----------==========---------=========---------
; Main routine. Program execution starts here.
;---------==========----------==========---------=========---------
MAIN:
MOV SP,#2FH

MOV P1,#0FFH
TOP: SETB VT
JB VT,$

SETB DATA1
SETB DATA2
SETB DATA3
SETB DATA4
JB DATA1,DOWN1
CPL DEV1
JNB DATA1,$
DOWN1:JB DATA2,DOWN2
CPL DEV2
JNB DATA2,$
DOWN2:JB DATA3,DOWN3
CPL DEV3
JNB DATA3,$
DOWN3:JB DATA4,DOWN4
CPL DEV4
JNB DATA4,$
DOWN4:AJMP TOP

;**********************************************************
DELAY:
MOV R1,#055H
REP2: MOV R2,#0FFH
REP1: NOP
DJNZ R2,REP1
DJNZ R1,REP2
RET
;**********************************************************
END







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