Hi again, I was using Sparkfun PIR motion sensors with open collector output. I have used multiple motion sensors connected to a single input pin (pulled up to 5V) on Arduino and if any of the motion sensors triggered, the input pin was pulled low. Recently I bough couple of these eBay PIR motion …

Several TTL outputs in paralel

runaway_pancake December 15, 2012, 11:29pm 2

The outputs can be diode-OR'ed into one input.
(If they're O.C. then pull them up.)

Topic		Replies	Views
Is it possible to connect several PIR output to one data input? General Electronics	18	12524	May 6, 2021
Two PIR motion sensors (HC-SR501) connected to the same input General Guidance	15	6329	May 5, 2021
Two PIR sensors sharing one digital pin? Programming	6	1425	May 5, 2021
collegamento di più PIR ad un unico pin Hardware	13	5270	May 7, 2021
Using Multiple PIR Sensors Programming	4	3200	May 5, 2021