Electronic Brick - Electricity Meter Analog
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What is an electronic brick?
An electronic brick is an electronic module which can be assembled like Lego bricks simply by plugging in and pulling out.
Compared to traditional universal boards and circuit modules assembled with various electronic components, electronic brick has standardized interfaces, plug and play, simplifying construction of prototype circuit on one’s own.
There are many types of electronic bricks, and we provide more than twenty types with different functions including buttons, sensors, Bluetooth modules, etc, whose functions cover from sensor to motor drive, from Ethernet to wireless communication via Bluetooth, and so on.
We will continue to add more types to meet the various needs of different projects.
Electronic brick of electricity sensor is based on TA12-100 current transformer, which can transform AC signals of large current into small amplitude signals.
The maximum current that can be detected can reach 5A, and the present current signal can be read via analog I / O port.
|PCB size||30.0mm X 24.0mm X 1.6mm|
|Compatible interfaces||2.54 3-pin interface and 4-pin Grove interface(1)|
Note 1? S for analog output port, G for ground, and N for not used pin.
#define ELECTRICITY_SENSOR A0 // Analog input pin that sensor is attached to
float amplitude_current; //amplitude current
float effective_value; //effective current
sensor_max = getMaxValue();
Serial.print("sensor_max = ");
//the VCC on the Grove interface of the sensor is 5v
amplitude_current = (float)sensor_max / 1024 * 5 / 200 * 1000000;
effective_value = amplitude_current / 1.414;
//Only for sinusoidal alternating current
Serial.println("The amplitude of the current is(in mA)");
Serial.println(amplitude_current, 1); //Only one number after the decimal point
Serial.println("The effective value of the current is(in mA)");
/*Function: Sample for 1000ms and get the maximum value from the SIG pin*/
int sensorValue; //value read from the sensor
int sensorMax = 0;
uint32_t start_time = millis();
while ((millis() - start_time) < 1000) //sample for 1000ms
sensorValue = analogRead(ELECTRICITY_SENSOR);
if (sensorValue > sensorMax)
/*record the maximum sensor value*/
sensorMax = sensorValue;
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