Pulse sensor RPI directly

Oh and if you change the emonhub config, you must restart the service.

sudo systemctl restart emonhub
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I was powering it over 3v for quite awhile noticed some used 5v gave it a try see if it fixed my issues

Still the same using 3v

No signs of life

If lined up correctly with the meter LED and wired to 3.3 (or 5) volt - just the power and ground, I think you should see the pulse on the outside of the OPS flash when the meter flashes.

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Yep this isn’t happening it’s gotta be dead sadly

Email the shop.

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We are sending @Sharpy another sensor.

The failure rate on these sensors is very low, but just in case, we have thoroughly tested this replacement.

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@Gwil, am I right that it should just flash when powered (and data line not connected)?

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Appreciate that thank you

Here is most of what we know of the optical sensor.
Measurements & cct dgm: First try with EmonPi - Pulsecount stuck at 1 - #16 by Robert.Wall
Also Adjusting sensitivity of Optical Pulse Sensor - #21 by Kempson
Wire colours: 3.3V power: red, GND: black, output: blue
It certainly runs quite happily on 3.3 V.

From reading the above, you’ll see it doesn’t need a pulse, a steady light (daylight, a torch) is enough, and the output voltage can be read with a multimeter.

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I’ve just tested it and yes: the LED should flash with only the power and ground connected.

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