hello
i am doing the relay connection for 64 relays in matrix . i want to use 2 port of at89s8252 to connect 64 relays. i want to 2 ULN driver for this purpose. I have the circuit diagram which i got one of my friend .
But i can't understand which pin of a 5 pin relay would connect to row and column . From the circuit diagram ,how much understand i don't know, the common pin of relay pin is connected to one pin of ULN driver and another
normally connected pin is connected to one pin of the other ULN driver .
Here i can't understand how the supply pin of relay would be connectded
to the ULN driver pin.
I have attached the circuit diagram .PLZ go through it.
and help me in this regard. Its very urgent .Waiting for ur response
regards from cktcrazy
i am doing the relay connection for 64 relays in matrix . i want to use 2 port of at89s8252 to connect 64 relays. i want to 2 ULN driver for this purpose. I have the circuit diagram which i got one of my friend .
But i can't understand which pin of a 5 pin relay would connect to row and column . From the circuit diagram ,how much understand i don't know, the common pin of relay pin is connected to one pin of ULN driver and another
normally connected pin is connected to one pin of the other ULN driver .
Here i can't understand how the supply pin of relay would be connectded
to the ULN driver pin.
I have attached the circuit diagram .PLZ go through it.
and help me in this regard. Its very urgent .Waiting for ur response
regards from cktcrazy
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