On Sun, 23 Sep 2018 12:11:16 -0700, OGER wrote:


Active Passive? PIRs don't transmit.



Suggestions please.

Taking a driveway PIR xmtr to modify for other purposes with no actual
internal mods.

Thinking of using some emitter taped to the PIR window to activate the xmtr.

Something as simple as a blinking LED to keep the xmtr transmitting
while the LED is blinking.

Using one of these.
4VWIN Wireless Home Security Driveway Alarm

https://www.amazon.com/4VWIN-Wireles...e+door+monitor

or
Harbor Freight Home Security Driveway Alarm
https://www.harborfreight.com/wirele...tem-62447.html

Suggestions please.
Switch State
Open - LED off and no PIR activation
Closed - LED blinks to maintain PIR activation.

Option 1:
blinking LED and switch and battery.

Option 2:
555 timer, LED, switch and battery.

Or ???

What is needed to activate the PIR. LED color or type ?

Receiver will just be the reeiver's flashing LED with the audio function
disabled.
I think it is a transducer that I can either smother or cut out of the
circuit if it is not part of the receiver function.

What do you think?

--

John Larkin Highland Technology, Inc

lunatic fringe electronics