











Garden Sentry 12V – Part 2
3-02-09T10:22:52












Garden Sentry 12V – Part 2
Garden Sentry 12V – Part 2
In part we we made and assembled the sensor and dashcam camera mount. The next thing to mount is the water solenoid with irrigation fittings.
Garden Sentry 12V – Part 1
Back from Bunnings with the irrigation fittings I need so we can now start building the low voltage motion activated sprinkler.
Garden Sentry 12V Version – Part 1
The 12V irrigation solenoid has arrived so together with the 12V PIR sensor we can now start construction! This unit will guard the front yard from prowling cats.
Interesting to note that the prowlers have avoided the back yard after being water blasted with the other (original) Garden Sentry.
PIR Sensor – Part 3
In Part 2 we determined the switched sensor output could handle @ 12V a current load up to 4 amps. Not sure about that? more research (is possible) is needed.
Having said that the 12V irrigation solenoid (still waiting for delivery) is rated @ 0.3A or 300mA. Anyway for the sake of fiddling I want to hang a relay off the sensor output so went looking for one.
PIR Sensor – Part 1
Off to the workshop to play with the PIR sensor that was delivered this morning. Still waiting on the irrigation solenoid.
Garden Sentry scored a hit this morning-
The mornings have been quiet for a while with no prowling cats. The last time the cat with white legs paid us a visit was on the 25th. ‘White legs’ was back again this morning and the CCTV footage is less that one second!
Designing and ordering/collecting the components I need to make a battery operated version of my Garden Sentry.
Garden Sentry – Motion activated sprinkler (part 2)
At 3.45am this morning a very surprised prowling cat was detected and scared away with noise and water spray!
All quiet on the western front-
Apart from marauding moths and the neighbor across the road getting ready to go fishing @ 4.00am no sign of any prowling cats.