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Help me build a counter circuit for IR motion detector

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pas_cktmaker

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hello all,

i am making a IR motion detector circuit(WITHOUT USING microcontroller)which also incorporates a counter circuit to it..thereby displaying the no. of times the IR beam is interrupted by obstructions.

as of now.the counter circuit that i have come up with incorporates 3 IC's per 1 7-segment display,namely :
(1)7447;BCD to 7-segment decoder
(2)7490;Decade counter
(3)7730;7-segment display

but this is making the counter circuit itself very bulky.i need a suggestion-
is there some IC which can substitute for all these ICs,OR ,any other way to make a counter circuit.
 

link2mani1

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Re: motion detector with counter circuit

hello all,

i am making a IR motion detector circuit(WITHOUT USING microcontroller)which also incorporates a counter circuit to it..thereby displaying the no. of times the IR beam is interrupted by obstructions.

as of now.the counter circuit that i have come up with incorporates 3 IC's per 1 7-segment display,namely :
(1)7447;BCD to 7-segment decoder
(2)7490;Decade counter
(3)7730;7-segment display

but this is making the counter circuit itself very bulky.i need a suggestion-
is there some IC which can substitute for all these ICs,OR ,any other way to make a counter circuit.

could you please send me the circuit diagram

---------- Post added at 18:18 ---------- Previous post was at 18:16 ----------

use ir motion detector with fllip off motion to count the motion
 

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