smoke alarm

[Brandyn]

Or any relay for that matter.

[Tarmizi]

I have created a program but is the signal does not send to turn on the relay. How do i make it send signal to the relay. The send signal name as 'asd'.

[Brandyn]

If you use a DMM and when you send  a signal, what voltage do you measure?

[Brandyn]

Like I asked before, you need something to drive the relay.

[Tarmizi]

I record the voltage of 1v. Is it very low. If it does, how do i increase the voltage? Thanks in advance.

[Brandyn]

You will need an opamp circuit to increase the voltage since you are using the NIELvis board.  

[Tarmizi]

Ok, i will try it. But how do i create a opamp, is there an example? Thanks once again

[Brandyn]

http://en.wikipedia.org/wiki/Operational_amplifier

[apok]

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@Tarmizi wrote:
I record the voltage of 1v. Is it very low. If it does, how do i increase the voltage? Thanks in advance.

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once you have received 1vdc on your AI, then DO to a driver that is connected to your relay and external  source...that should work

[Tarmizi]

Ive created a program smoke alarm that able to receive signal from the smoke alarm and use that signal to send to the relay. But the thing is that the sending signal is forever on eventhough the receiving no longer receive. By the way im using NI Elvis2. How to solve this? thx in advance