how to make three-dimensional objects completely touch sensitive

Projects Discussion and Showcase Interactive Art
16

You can easily make paint from graphite or else the easier option will be to take out carbon from AA or AAA battery. Then mix some water and obtain the consistency like paint by stirring it properly, Then paint it on a surface whatever you want to make touch sensitive.

Connect this sensitive surface to A0 or any analog pin of arduino and upload the following code

#include <ADCTouch.h>

int ref0;     //reference values to remove offset

void setup() 
{
  // No pins to setup, pins can still be used regularly, although it will affect readings

  Serial.begin(9600);

  ref0 = ADCTouch.read(A0, 500);    //create reference values to 
  
} 

void loop() 
{
  int value0 = ADCTouch.read(A0);   //no second parameter
  

  value0 -= ref0;       //remove offset
  

  Serial.print(value0 > 40);    //send (boolean) pressed or not pressed
  Serial.print("\t");           //use if(value > threshold) to get the state of a button

Serial.print(value0);             //send actual reading
  Serial.print("\t");

  Serial.println(value1);
  delay(100);
}

Here if value0 will be greater than 40 it means that touch is detected.

you can use this code according to your need.

You can install this library from arduino library manager library.

Thank You