Re: PIR sensor - wake and sleep using CH_PD & thingspeak upd
Posted: Mon Aug 24, 2015 4:37 pm
DaniloFix wrote:I read a few places that the SW18020P conductive / contact time was 2 ms, so pretty far from the needed 325 ms. So the million dollar question is, how to keep the pin high, long enough to wake up the ESP from power off state?
Perhaps one or more small capacitors in parallel could do the trick? That is, if they can charge fast enough
Try a FET as a switch, the more capacitive the gate the better. Then use the sensor to charge the gate. At the end of the day it only needs to hold for 500ms.