Using LightCrafter 4500 input trigger with promixity switch

Michael Strohmeier

Hi,

i want to trigger the LightCrafter 4500 externally. As a hardware trigger event, a proximity switch is used. Since such a sensor has 24V i can't go directly onto the LightCrafter. So i build a simple circuit in which the sensor just opens/closes a relay. If the relay is open (proximity switch detects metal), a 3.3V signal is forwarded to pin #2 of LightCrafter Trigger Input (J11).

When i get the documentation right, the trigger input pin #1 of J11 supplies 3.3V. So my idea was to use pin #1 as the source of 3.3V and forward it to pin #2 if the relay opens.

However, this does not seem to work. Can I use the output voltage of pin #1 to trigger pin #2?

Thank you for your help!

Best regards,

Michael

over 8 years ago

0 Paul Goedeke over 8 years ago

TI__Mastermind 30600 points

Hi Michael,

Thanks for your question and welcome to the DLP Forums. You should be able to do what you're asking about, I don't see a conceptual problem with that.

Have you probed the connector to see if pin 1 actually reads 3.3V? Do your relay circuit and the Lightcrafter share a ground connection? Is the relay circuit open/closed long enough?

-Paul

0 Michael Strohmeier over 8 years ago in reply to Paul Goedeke

Prodigy 105 points

Hi Paul,

thank you for your answer.

I tried another cable and now everything is working.

Sorry for wasting your time.

Is there an option to delete this thread?

Michael

0 Paul Goedeke over 8 years ago in reply to Michael Strohmeier

TI__Mastermind 30600 points

Don't worry about it! Glad you figured it out :)

Paul

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Using LightCrafter 4500 input trigger with promixity switch