Enjoy! PLEASE NOTE: I often add captions to correct myself or elaborate in these videos, but the text is usually only visible if you watch it on the YouTube website.
A lot of this project was inspired by this page: Cool Magnet Man This is an incredibly valuable resource if you are interested in projects involving magnets and magnetism - I strongly encourage you to read through his website, I've spent a fair amount of time enjoyably reviewing his posts.
I will apologize in advance, the code isn't amazing, the design is a little short changed - but this thing went together really quickly from concept to reality. I will likely have a software revision in the near future, if you find any bugs please let me know so I can improve the next version. This is designed to run from a 9V battery.
ARDUINO CODE:
(Some of the LCD positioning is funny because I was using an odd ball LCD for the breadboard)
#define sensorPin 0
#define calibrationPin 1
//#include <Wire.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
float sensorRead;
float calibrationRead;
float sensorPinVoltage;
float calibrationPinVoltage;
float gauss;
void setup() {
lcd.begin(16, 2);
lcd.print("Awesome");
lcd.setCursor(1,1);
lcd.print("Jarret!");
delay (2000);
}
void loop() {
sensorRead = analogRead(sensorPin);
calibrationRead = analogRead(calibrationPin);
if (sensorRead >= 1020 || sensorRead <= 3){
lcd.clear();
lcd.print ("INTENSIT"),
lcd.setCursor(1,1);
lcd.print("Y ERROR!");
}
else{
sensorPinVoltage = ((5 * sensorRead) / 1023);
calibrationPinVoltage = ((5 * calibrationRead) / 1023);
gauss = ((1000 * (calibrationPinVoltage - sensorPinVoltage)) / 1.3);
lcd.clear();
lcd.print (gauss, DEC),
lcd.setCursor(1,1);
lcd.print("gauss");
}
delay(500);
}
Sorry about being so blunt with this. I will elaborate more in the future.
Cheers, have fun!
