Instead of hooking the relays contacts to the switch that activates the buzzer, use the contacts to activate a prop or prop controller.What about using it to trigger props?
Good find HomeyDaClown. Harforfreight is one of my staples. I looked on their site and the price is $29.99. Unless it is on sale at the store:Harbor Freight sells a wireless PIR driveway alert system for less than $20 that is much easier to hack.
Yep , thats the one I got only my local HF store had it for $17.99 and normally has it for $19.99, you just have to watch the ads is all.Good find HomeyDaClown. Harforfreight is one of my staples. I looked on their site and the price is $29.99. Unless it is on sale at the store:
- Harbor Freight Tools - Quality Tools at the Lowest Prices
...I like the idea that if used as an alarm it will wake me up, so I can run out there and handle business. Plus, you could hack the sound and put in a prop.
Yep, Both the sensor/transmitter and the receiver are battery operated. It works fine. Mine is mounted on a lamp post near the end of my drive (over 100 ft from the house) and goes off when either a car or person passes the post. I will be hacking mine to run on an AC adapter (I have AC power on the post) so I won't have to worry about replacing batteries. I already narrowed the range of the sensor by putting a short piece of PVC on the front.Homey, is the pir battery operated?
How well does it work?
I am considering one of thes for my yard.
he had to use the led because the sensors operate vie PWM not a relay contact. so you have to have a much more advanced circuit to interpret the PWM from the garage door sensors. his simple way was just to get the kind that has an led that flashes when the beam is broken and use the photocell to trigger the relay.Not sure why they went to all the trouble to use the LED on the sensor to drive the circuit.