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PZEM-004T functions on 5V and will sometimes not work on 3V3

Francois Kasselman 2019-01-18 11:07:51 +02:00
parent 4f6331b98e
commit 49eb178e47
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PZEM004T-Energy-Monitor.md

@ -25,6 +25,9 @@ Connect the serial interface of the Sonoff Basic with the serial interface of th
<img src="https://github.com/arendst/arendst.github.io/blob/master/media/pzem/pzem-basic.png" height="400" />
As the PZEM004T is functioning better on 5V, it can be obtained from the Voltage regulator as shown in this image.
<img src="https://camo.githubusercontent.com/f014130fdde36f97f37a5af20fc223621b192e1b/687474703a2f2f74696e6b65726d616e2e6361742f77702d636f6e74656e742f75706c6f6164732f323031362f30362f70696e6f75745f6261636b2e6a7067" height="400" />
Cut the power cable in two and connect the input wires to both Sonoff Basic and PZEM-004T. Route one of the power output wires through the PZEM-004T core and connect the output wires to the Sonoff Basic output.
As most parts are connected to high voltage AC it is recommended to fit the hardware in a solid enclosure.