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<nowiki>Whether you re using an ardu … Whether you re using an arduino uno or a nano, the code that you ll need to upload in order for the probe to function correctly is basically the same.

Just make sure to program the correct digital pin for the piezo speaker. In the instructions above, we connected the speaker on D9 on an arduino uno, and D3 on an arduino nano.

// Arduino Electromagnetic interference detector

// Code modified by Patrick Di Justo, based on

// Aaron ALAI EMF Detector April 22nd 2009 VERSION 1.0

// aaronalai1@gmail.com

//

// This outputs sound and numeric data to the 4char

#include

#define SerialIn 2

#define SerialOut 7

#define wDelay 900

int inPin = 5;

int val = 0;

SoftwareSerial mySerialPort(SerialIn, SerialOut);

void setup()

{

pinMode(SerialOut, OUTPUT);

pinMode(SerialIn, INPUT);

mySerialPort.begin(19200);

mySerialPort.print("vv");

mySerialPort.print("xxxx");

delay(wDelay);

mySerialPort.print("----");

delay(wDelay);

mySerialPort.print("8888");

delay(wDelay);

mySerialPort.print("xxxx");

delay(wDelay);

Serial.begin(9600);

}

void loop()

{

val = analogRead(inPin);

Serial.println(val);

dispData(val);

val = map(val, 1, 100, 1, 2048);

tone(9,val,10);

}

void dispData(int i)

{

if ((i<-999)lay); Serial.begin(9600); } void loop() { val = analogRead(inPin); Serial.println(val); dispData(val); val = map(val, 1, 100, 1, 2048); tone(9,val,10); } void dispData(int i) { if ((i<-999)</nowiki> +
The EMI detector comes in two forms: the g … The EMI detector comes in two forms: the gadget is mounted on a shield suitable for an arduino uno board, or the detector is embedded on a shield on which an arduino nano is mounted. We will start by building the shield for arduino uno here s the wiring diagram for the EMI detector == Step by step instructions for the Arduino Uno shield == First, solder at least a couple of pins to the PCB. These will go into GND and Analog 5 in th arduino uno board. Next, solder an extra pin on the opposite side of the PCB. This will connect to Digital 9 on the arduino board. The speaker will also be soldered onto the PCB. Solder the positive end of the speaker to the pin which goes into analog 9 on the arduino. Solder the negative end of the speaker into the PCB. Then connect a short (5 cm max) piece of electric wire to the negative end of the speaker. The other end of the cable is soldered on the pin which goes into GND. Use a 1Mohm resistor to connect the pin which goes into GND and the one that goes into Analog 5 on the PCB (see photo above). It’s now time to add the antenna of your EMI detector. Take about 20 cm of solid core wire, and solder one end of it on to the PCB, precisely to the pin that goes into Analog 5 on the board. = Step by step instructions for the Arduino Nano shield = An timelapse is available here Solder two strips of female headers onto a PCB (3cm x 7cm) You will need to be able to arrange the arduino nano onto these strips of female headers. Solder the positive side of the speaker to the PCB, in correspondence with the D3 pin. Solder the other end of the speaker onto the PCB, in correspondence with GND pin of the arduino nano. Next, grab the 1Mohm resistor, and solder one end to the PCB pin which leads to A5 on the board, the other end to the PCB pin which goes into GND. To make the antenna of your device, take a piece of solid core wire (about 15 cm long), and solder one end of it to the PCB pin which leads to GND on the arduino nano. Finally, grap two short pieces of electric wire. You will use them to connect a 9V battery to the arduino nano and power the board. Solder one end of the first cable to VIN on the arduino nano, solder one end of the other cable to GND. solder one end of the other cable to GND.
You can download the stl file and 3D print the case. The stl file is available[https://drive.google.com/open?id=1RncFtjXTi5H6E6J_COj7BYNa-ry2vzqX here]. +
You can use the EMI probe to compare and c … You can use the EMI probe to compare and contrast EMI radiations deriving from different electronic appliances. Hold the probe next to a stereo system or a TV whilst these devices are in standby mode, and you ll probably get a similar reading to a laptop when this is turned on.eading to a laptop when this is turned on. +