Review on π Highly Efficient DIYmall HC SR501 Motion Infrared Arduino for Enhanced Arduino Projects by Stephen Zimmer
There are no retrigger contacts, just bare solder pads.
They work as long as you don't bother changing the trigger mode. Why? Because the ones I received didn't actually have "H/L" jumpers. They were just bare pads. I made a jumper on one of them to set it to "L", the pad came off immediately. It's pretty annoying. I only need to fire it once when there is movement, so now I have to change my code to only fire on the rising flank.
- Stylish and modern design
- I have no particular complaints about it, everything is fine
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