Motion Sensor Issues, continued

RE: Motion Sensor Issues, continued

Gough Lui — Sun, 06 Jan 2019 11:50:57 GMT

It may well be 5V from the USB on the Wemos is actually the RAW input. But the problem might be resistance from your USB lead - perhaps try a shorter lead or one with thicker gauge wire - there's a lot of cheap chargers with bad leads. The peak Wi-Fi transmission current could cause the input voltage to dip enough to cause strange behaviour too.

- Gough

RE: Motion Sensor Issues, continued

mcb1 — Sun, 06 Jan 2019 10:44:08 GMT

Good work sorting out the issues.

On the link you sent for the PIR, it appears there is a diode in series with the +ve input, which then goes to what looks like a regulator.

I found this here https://www.elecrow.com/hcsr505-mini-pir-motion-sensor-p-1382.html and it seems there is a 3v3 regulator.

[View:/resized-image/__size/1233x436/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-8d16ed3b-fabf-4efc-b7e4-686eccdd4c89/contentimage_5F00_189787.png:1233:436]

I'd suggest shorting the diode and see how it goes.

Mark

RE: Motion Sensor Issues, continued

fmilburn — Sun, 06 Jan 2019 05:41:13 GMT

I find the ESP8266 boards finicky at times. Dollar Store nail polish - yeah!

Frank