There is one analog pin available in nodemcu esp12 we could use that pin but esp series can take upto 3 3 volts on their pins.
Arduino energy meter circuit.
The code is shown in the attached images here is the link to download the energy meter code.
The arduino senses the current and voltage by using the ina219 current sensor and temperature is sensed by temperature sensor ds18b20.
This smart energy meter using iot does automatic energy monitoring and billing.
Our open hardware energy monitoring arduino compatible shield featuring the above circuit alongside voltage measurement for real power calculation.
1 shows the circuit diagram of the energy meter which is built around energy metering ic with integrated oscillator ade7757 ic1 microcontroller at89c52 ic2 eeprom at24c02 ic3 5v voltage regulator 7805 ic5 opto coupler mct2e ic4 and an lcd display.
Energy meter circuit fig.
Hello all im trying to read holding register data values of energy meter through arduino mega using rs485 to ttl converter from past 1 month but i havent suceeded.
Circuit diagram for iot based energy meter using arduino and nodemcu is given above connect esp12 as below.
The heart of the energy meter is an arduino pro micro board.
As any other transformer sns current ct013 100a has primary and secondary windings the ratio is 100 0 05 i e.
When 100a flow through primary 1 turn wire the secondary coil will have 50ma.
Because your setup ct resistors and input voltage may be different there is a scaling factor in the sketch which you will need to change before you will get.
According to this voltage and current arduino does the maths for calculating power and energy.
Connect rx of esp12 tx of arduino.
Once i get the hardware fully sorted and release the designs then i ll include the code too.
Please help me out in this regard im using elmeasure energy meter of model lg1129 bm5140 rs485 to ttl converter module link.
The whole schematic is divided into 4 groups.
On the other end the sensor have 3 5 mm audio jack where you can plug in mating connector and connect to arduino.
The code isn t that useful without the hardware anyway.
How to build an arduino energy monitor measuring mains voltage and current.
Iot based energy meter reading using arduino microcontroller.
Current sensing is done by measuring the voltage drop across a current sense 0 005 ohm resistor that s wired into the mains.
It gets isolated from the arduino board and amplified to the range of the arduino s reference voltage.
