Hi all,
I am completely new in using arduino and doing more "advanced" electrical projects.
I therefore, hope some of you experts can help me with my project.
I have an issue trying to make a touch sensitive lamp.
I did make all the wiring and conversion from 220v AC to 12v DC. Everything works perfect when i connect the arduino nano to my computer and test it using the below code.
All values are below 150 pF and when i touch it jumps to above 2000 pF and toggles my relay on/off.
However when i connect the lamp to 220v AC the issue starts. All pF values are jumping up and down toggling the lamp on and off without me touching the lamp.
i use a 1 megohm resistance between the send and receive pin. i also use a capacitor (101) from sensor pin to ground as suggested on: Arduino Playground - CapacitiveSensor
I believe the issue may be in the code which can be seen below (based upon the sample from the library). I hope you can help me.
#include <CapacitiveSensor.h>
CapacitiveSensor cs_4_2 = CapacitiveSensor(4,2); // 10M resistor between pins 4 & 2, pin 2 is sensor pin, add a wire and or foil if desired
bool toggle = false;
void setup()
{
//cs_4_2.set_CS_AutocaL_Millis(0xFFFFFFFF); // turn off autocalibrate on channel 1 - just as an example
pinMode(7, OUTPUT);
//pinMode(4, OUTPUT);
Serial.begin(9600);
}
void loop()
{
//long start = millis();
long total1 = cs_4_2.capacitiveSensor(30);
if(total1 >= 1500)
{
if(toggle == false)
{
Serial.println("ON");
toggle = true;
digitalWrite(7, HIGH);
delay(1000);
}
else
{
Serial.println("OFF");
toggle = false;
digitalWrite(7, LOW);
delay(1000);
}
}
Serial.println(total1);
delay(10); // arbitrary delay to limit data to serial port
}