Nodemcu Current Sensor

The amplitude of the current is in ma 6201 2 the effective value of the current is in ma 4385 6. The non invasive ac current sensor is a current transformer can be clamped around the supply line of an electrical load to measure the current. Nodemcu is a tiny device it works on 3 3 volts.

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With power usage according to power consumption meter.

Nodemcu current sensor.

Acs712 current sensor i have got 5amp sensor 185 mv sensitivity. Usually the output signal is an analog voltage. In our case we want to measure 12 volt battery and nodemcu adc analog to digital channel can only accept 3 3 volts. 385 watt 1 687 a voltage 228 sensor max 422 rises to 423 sometimes the amplitude of the current is in ma 4394 5 the effective value of the current is in ma 3107 9.

A current sensor is an important device in power calculation and management applications. It does this by acting as an inductor and responding to the magnetic field around a current carrying conductor. Adc asc712 battery monitor battery voltage current shunt development board esp 07 esp 12 esp8266 hall sensor lua mailbag nodemcu power voltage voltage divider web server wifi module. Connect vcc of sensor to 3 3v on nodemcu.

An appliance to connect on ac load of less than 5 amp. Acs712 current sensor board published by esp8265 wp on june 2 2015. It measures the current through a device or a circuit and generates an appropriate signal that is proportional to current measured. Voltage greater than 5 volt may blow the pin or fry the nodemcu.

By reading the amount of current being produced by the coil the current passing through the conductor can be calculated. 5 v 2 amp power supply to nodemcu cell phone charger works. You can use this sensor with arduino and nodemcu esp8266 wifi module. Gnd of sensor to gnd of nodemcu.

Powering the nodemcu near the switchboard might be an issue as well so i installed a din rail power socket this will come in handy for real power measurement later on. Connecting pir sensors to a nodemcu is really simple. To power up this sensor you need 2 5v to 5 volts which is perfect. Asking because acs712 gives around 5v of analog output and not sure if nodemcu can handle 5v in the analog input pin.

Most pir modules have a 3 pin connection at the side or bottom. Datapin of sensor to a0 analog pin. Thu jan 31 2019 3 10 pm 80355 hi is it possible to use current sensor acs 712 directly with esp8266 nodemcu board. This sensor is most commonly used as the air quality monitor.

Since it is working on 3 3 volts its pins can source and sunk 3 3 volts only. Seeed non invasive ac current sensor 100a max. The pir acts as a digital output so all you need to do is operate the pin to flip high detected or low not detected. Check out the images for more details.

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