I am new to Arduino, and have the following items to try to make an IR Beam Door alarm for my small manufacturing shop to alert me when someone walks through the roll-up door: Arduino Uno R4 Minima, 'IR Through-beam' sensors (send/receive), 12V 2A power supply, & a 12 V Piezo Buzzer alarm. Note: I cannot use a Motion sensor as there is too much movement around the area of the door.
When tripped, I would like the alarm to 'temporarily' send 12 volts to the piezo alarm, for 1-2 seconds, then wait about 10-15 seconds before sounding again if the beam is broken (to avoid a continuous alarm). Can someone offer me a solution?
I'm willing to pay someone to create a schematic for this setup using the parts I have, and can purchase any additional items (ie: resistors/capacitors etc). I can handle the assembly & soldering...
Here's my list of current parts:
IR Sensors: Amazon.com
Yes, 100 metres would be a stretch and then some but 3 to 4 metres would be no drama.
Note: I cannot use a Motion sensor as there is too much movement around the area of the door.
You could actually, just need to put " blinkers" on the sensor, done it quite a few times.
You can use a pair of garage door sensors along with some resistors, a capacitor, and an op-amp to build a sensor that meets your needs. I built one years ago with LEDs on each side of the garage to indicate whether the door path is clear. The LEDs flash once for each leg as someone walks through the beam, making it easy to verify the door is unobstructed.