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Re: PIR sensor - wake and sleep using CH_PD & thingspeak upd

PostPosted: Wed Sep 07, 2016 12:22 am
by driz
I am also unable to get this to work. I'll continue to watch this thread for any updates. Thanks for your work on it!

Re: PIR sensor - wake and sleep using CH_PD & thingspeak upd

PostPosted: Sun Oct 02, 2016 8:07 am
by bkomac
In my case with PIR sensor, it looks like there is not enough voltage on CH_PD from the PIR (3.2V) after the diode, to start up ESP after shout down.
Hmm...

Re: PIR sensor - wake and sleep using CH_PD & thingspeak upd

PostPosted: Mon Oct 10, 2016 1:53 pm
by bkomac
The same is with me. I get 3.24 V from PIR to CH_PD. I tried with a small capacitor, but also no luck.
If I use a switch instead of PIR, everything works as it should.
I'm using ESP 8266-12 and D-SUN PIR (from ebay). PIR stays on about 2 seconds, so it can't be a timing problem.

Re: PIR sensor - wake and sleep using CH_PD & thingspeak upd

PostPosted: Thu Nov 24, 2016 2:44 pm
by Craig54321
Great work here. I've tried both of the schematics on the original post and have similar problems with both: The CH_PD appears to be held high by the ESP8266. And this is denying the device from sleeping. Once detaching the CH_PD from the circuits the ESP8266 seems to let go of this CH_PD high state. Then the the chip sleeps (well, really the chip is turned off). Any ideas what my problem is? I suspect that maybe I have damaged the ESP8266 in one of my configurations.