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Home Power Monitoring

With PZEM-016, monitoring of 3 phases in electrical entrance of my house

Guillaume R.Guillaume R.
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My goal is to do an ESP circuit who is able to send to my MQTT server all 3 phases datas.The restriction :- 3 pahases non-intrusive electrical measurement- 1 UART to 3 UART MUX for ESP-8266- WiFi connection- MQTT connection compatible- 230V Powered- Node-red compatibleI choose to use :- 1x ESP-12 (ESP8266 based)- 3x PZEM-016 modified as details section- 1x MUX 74HC4052- Some passive components- Arduino IDE for ESP-12 with PZEM-004T_v30 library : https://github.com/mandulaj/PZEM-004T-v30- Mosquitto MQTT server- Node-red on my Rpi home domotic server

PZEM-016 are normally RS485, I modified them to be UART 3.3V compatible

- Remove MAX485 IC

- Short-circuit pin 1 to 7 of MAX485

- Short-circuit pin 4 to 6 of MAX485

- R 3k3 0805 between pin 5 and 7 of MAX485 (do warn of short-circuits under resistor on pin 5-6-7)

- R 2k2 0805 between pin 3 of U1 and R13

HPM-2019_tableau_electrique (4).jpg

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HPM-2019_tableau_electrique (5).jpg

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HPM-2019_tableau_electrique (6).jpg

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HPM-2019_tableau_electrique (3).jpg

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HPM-2019_tableau_electrique (2).jpg

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View all 13 files

  • 1 × PZEM-016 Voltage, Current, Power, Energy, Frequency, Phase sensor
  • 1 × Espressif ESP-12 ESP8266 wifi module
  • 1 × 74HC4052 Switches and Multiplexers / Analog Switches and Multiplexers
  • 1 × LM1117MPX-3.3 Power Management ICs / Linear Voltage Regulators and LDOs
  • 1 × Resistor 3.3k ohm 0805 Resistor 0805

View all 6 components

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