it increase and decrease the blinking rate.
the pulse of 555 is adding in 8051 to increase blinking rate.
i configure that circuit. but i am not able to programming it. so anybody can write the exact code here.
Added after 4 hours 30 minutes:
org 0000h
start:
setb P1.0
Clr P1.1
call delay
setb P1.1
Clr P1.0
sjmp start; loooooop forever to start
delay: mov R1,#0FFH
del1: mov R2,#0FFH
del2: djnz R2,del2
djnz R1,del1
ret
end
i nee to add that 555 with that code.
can anyone help me out.................