How do I use the interrupt
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While you guys are at it, can you also confirm that the PIR module does indeed work as intended on 3.3V input like this guy claims:
http://techgurka.blogspot.se/2013/05/cheap-pyroelectric-infrared-pir-motion.html
There are a couple of different revisions of the HC-SR501 through so not all of them have actual pins for for H/L selection. Some just have small solder pads.Bypassing the regulator, and eventually removing it would solve a lot of problems for battery sensors. But as noted, it should probably output 3.3V when HIGH regardless so no need to worry.
While you guys are at it, can you also confirm that the PIR module does indeed work as intended on 3.3V input like this guy claims:
http://techgurka.blogspot.se/2013/05/cheap-pyroelectric-infrared-pir-motion.html
There are a couple of different revisions of the HC-SR501 through so not all of them have actual pins for for H/L selection. Some just have small solder pads.Hi all, does anyone know of an eBay listing that actually ships the HC-SR501 with the pins for H/L selection? I bought some of these: http://www.ebay.com/itm/310574919531, which shows the pins in the pictures and the description mentions being able to select H/L with a jumper, but the ones that arrived don't actually have the pins and have the solder pads instead.
Thanks
Al
