As most parts are connected to high voltage AC it is recommended to fit the hardware in a solid enclosure. Make sure the PZEM device is connected to the 230V AC power! The 5V pin only powers the optocouplers, not the actual chip. This tiny PZEM-004T circuit is great for measuring AC (RMS) voltage, current, and power (single-phase). The unit easily interfaces with Arduino and other hardware using the code library.

AC communication module PZEM-004T V3.0 User Manual

I was a bit surprised at the 10V drop when I turned on the kettle! Also, you might notice that VxA is not exactly W. I don't know if this is because I do the readings a second apart, or because of power factor, or because of something else. I'll look into it.) Spannung erst bei den PZEM Modulen einschalten und danach der Wemos! Los gehen die Messungen, Viel Spaß! VV][scheduler:185]: Running interval 'update' with interval=60000 last_execution=32987795 (now=33047795)Examples of PZEM-004T modules that use CT split core can be seen in the image below PZEM-004T CT Split Core Specifications / Features PZEM-004T Note: Reply voltage data is D1D2D3 = 00 E6 02, 00 E6 represent the integer-bit of the voltage, 02 represent the decimal of the voltage, the decimal is one digit, converts 00 E6 to decimal is 230; converts 02 to decimal is 2, so the current voltage value is 230.2V.

PZEM-004T Energy Monitor — ESPHome Peacefair PZEM-004T Energy Monitor — ESPHome

putX: These methods store values of various data types (e.g., putInt, putFloat, putString) in the preferences identified by a key (name). For example, putInt("someKey", 42) stores the integer value 42 with the key "someKey". Energy Auditing: Power monitoring systems are valuable tools for energy auditors to assess energy usage patterns in residential and commercial buildings. The collected data helps auditors identify areas for energy conservation and recommend improvements. Example configuration entry uart : rx_pin : D1 tx_pin : D2 baud_rate : 9600 modbus : sensor : - platform : pzemac current : name : "PZEM-004T V3 Current" voltage : name : "PZEM-004T V3 Voltage" energy : name : "PZEM-004T V3 Energy" power : name : "PZEM-004T V3 Power" frequency : name : "PZEM-004T V3 Frequency" power_factor : name : "PZEM-004T V3 Power Factor" update_interval : 60s Configuration variables: ¶ Pzem-004T an die gleiche Phase (L1- L3) wie der zu Messenden Stromkreis anschließen, da es sonst zu Messfehlern kommt! habe gerade eben die Variante mit dem PC ausgeführt. Das funktioniert auf anhieb! Es war bei allen drei die Adresse 1 vergeben.Connect the serial interface of the Sonoff Basic with the serial interface of the PZEM-004T. See pictures regarding used colors and connections. The documentation is terrible, but by trial and error I finally got it to work. (An hour ago I was going to ask for help.) It still needs some work but I can read voltage now and when I resume tomorrow I'll be able to read current, power and energy.

PZEM-004T Current Voltage Power Energy Multimeter Module AC PZEM-004T Current Voltage Power Energy Multimeter Module AC

Thanks for the help. I’ve made the changes you suggested and am still running into issues. I’ve tried with and without count: 2, and with and without any of the timeout clauses. My boot time is up over 5 minutes and my entities are pictured below. Some are still 0 or unavailable. For connection or connection between PZEM-004T V3.0 with Current Transformer (CT), Load and Arduino in full can be seen in the picture below : Wiring PZEM-004T with Load PZEM-004T V3.0 Module Function Testing DANGER - MAINS VOLTAGE. Be sure to crimp connectors and use heat-shrinking tube wherever possible/needed, and tightly secure any screw.Die Dioden habe ich im Tx Strang verbaut. Nur die zusätzliche Versorgung hab ich nicht drin. Es funktioniert auch ohne. Ist die einfach nur zur Unterstützung des Bus da?