In my project I am using multiple PIR Sensors. I am providing power using the 5v pin number 2 and also using 3 Signal Pins for receiving. I noticed that if all three sensors are plugged in, then the range on the sensors is only about 3 feet. If I remove all but one, then the range goes up to right around 15-20 feet.
Seems to me that with all three sensors drawing power at the same time, that perhaps there is not enough power to supply full range? Is that so and if yes, what do you recommend. I am already using a power supply of 5.1v and 2A