HLK-LD2415H, pin1 y pin2.

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hlk-ld2415h

Hi.
I've purchased an HLK-LD2415H radar and need to connect a relay to activate a photo and video camera. However, I don't understand how to do it.
The radar is working correctly. It's powered by 12V. The radar communicates correctly with the 2415H_TOOL_EN.exe program and is correctly configured using the photocoupler function.
With an oscilloscope, I can't see any signals on either pin 1 or pin 2.
Can you explain what electronic circuit I can connect to these two pins to activate the relay for my camera?

Thank you.

2 Answers

I've figured it out.
The connection must be made from VCC.
VCC to resistor, to optocoupler, to pin 1 or 2. Pins 1 and 2 don't provide an output. They only work if you use a resistor and optocoupler connected from VCC to pin 1 or 2.

JJ11

Pin 1 PULSE (radar board is a high-level effective output signal version: high-level effective output pin)
Pin 2 AA (radar board is a low-level effective output signal version: low-level effective output pin)
The specific connection depends on the relay and camera model

HLK-Ellen41
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