I make a PIR sensor for my HomeKit server,... when conect he circuit to my iPhone charger ( using a 3,3v regulator) te circuit works fine, but when i use a 3,3v switching power supply like this:
http://www.ebay.es/itm/AC-DC-fuente-de- ... SwzgBY030a
the PIR sensor fail, and send detection everytime...
I put a capacitor ni the power out, but dont work.
How can I solve this problem?