'sensors' was not declared in this scope

shanren · June 20, 2021, 10:13pm

Hi,
The error: 'sensors' was not declared in this scope
came when testing the code:


#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Fonts/FreeSans9pt7b.h>
#include <Fonts/FreeSans12pt7b.h>
/*
  #include <OneWire.h>
  #include <DallasTemperature.h>

  // Data wire is plugged into pin 2 on the Arduino
  #define ONE_WIRE_BUS 7
  /********************************************************************/
// Setup a oneWire instance to communicate with any OneWire devices
// (not just Maxim/Dallas temperature ICs)
//OneWire oneWire(ONE_WIRE_BUS);
/********************************************************************/
// Pass our oneWire reference to Dallas Temperature.
//DallasTemperature sensors(&oneWire);


#define OLED_RESET 4
Adafruit_SSD1306 display(OLED_RESET);


#define XPOS 0
#define YPOS 1
#define DELTAY 2




#if (SSD1306_LCDHEIGHT != 32)
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
#endif

const unsigned char PROGMEM ppwwmm [] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x03, 0xFF, 0xBE, 0x00, 0x3F, 0xE0, 0x1F, 0x00, 0x02, 0x21, 0xE3, 0x00, 0x33, 0x30, 0x31, 0x00,
  0x02, 0x20, 0x73, 0x00, 0x23, 0x18, 0x33, 0x80, 0x02, 0x3C, 0x71, 0x80, 0x66, 0x98, 0x67, 0x80,
  0x02, 0x3E, 0x31, 0xBE, 0x66, 0x9C, 0x45, 0x80, 0x02, 0x3E, 0x39, 0xFF, 0xC7, 0xDC, 0xE9, 0x80,
  0x02, 0x3E, 0x38, 0xE1, 0xCF, 0xF7, 0x89, 0x80, 0x02, 0x30, 0x7C, 0xE1, 0xCF, 0x23, 0x91, 0x80,
  0x02, 0x20, 0xEC, 0xD1, 0x8E, 0x33, 0x31, 0x80, 0x02, 0x60, 0xE4, 0x40, 0x9E, 0x33, 0x31, 0x80,
  0x02, 0x3F, 0xC6, 0x4C, 0x9E, 0x39, 0x71, 0x80, 0x02, 0x3F, 0x86, 0x4C, 0xBA, 0x3F, 0xF1, 0x80,
  0x02, 0x30, 0x02, 0x5E, 0xBA, 0x3F, 0xF1, 0x80, 0x02, 0x70, 0x03, 0x5E, 0xB2, 0x37, 0xF1, 0x80,
  0x03, 0xB0, 0x03, 0x7E, 0xF2, 0x33, 0x91, 0x80, 0x03, 0xF0, 0x01, 0xFB, 0xF3, 0xF0, 0x1F, 0x80,
  0x00, 0xE0, 0x00, 0x70, 0xC0, 0xE0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};


const unsigned char PROGMEM aslovo [] = {
  0xF0, 0x00, 0x9F, 0xFF, 0x90, 0x00, 0xF0, 0x00, 0x40, 0x20, 0x40, 0x60, 0x40, 0x50, 0x40, 0xD0,
  0x40, 0x88, 0x40, 0x88, 0x41, 0x08, 0x41, 0x08, 0x41, 0xF8, 0x41, 0x04, 0x41, 0x04, 0x40, 0x00,
  0xF0, 0x00, 0x90, 0x00, 0x9F, 0xFF, 0xF0, 0x00, 0xFA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x65, 0x72,
  0x2F, 0x00,
};

const unsigned char PROGMEM sat1 [] = {
  0x0F, 0x80, 0x01, 0xF0, 0x39, 0xC0, 0x03, 0x9C, 0x61, 0x80, 0x01, 0x86, 0x43, 0x1F, 0xF8, 0xC2,
  0xC6, 0x70, 0x0E, 0x63, 0x8D, 0xC0, 0x03, 0xB1, 0x9B, 0x00, 0x00, 0xD9, 0xF6, 0x01, 0x80, 0x6F,
  0xEC, 0x01, 0x80, 0x37, 0x58, 0x01, 0x80, 0x1A, 0x10, 0x01, 0x80, 0x08, 0x30, 0x01, 0x80, 0x0C,
  0x20, 0x01, 0x80, 0x04, 0x20, 0x01, 0x80, 0x04, 0x20, 0x01, 0x80, 0x04, 0x60, 0x01, 0x80, 0x06,
  0x60, 0x01, 0x80, 0x06, 0x60, 0x7F, 0x80, 0x06, 0x60, 0x00, 0x00, 0x06, 0x60, 0x00, 0x00, 0x06,
  0x20, 0x00, 0x00, 0x04, 0x20, 0x00, 0x00, 0x04, 0x30, 0x00, 0x00, 0x0C, 0x10, 0x00, 0x00, 0x08,
  0x18, 0x00, 0x00, 0x18, 0x08, 0x00, 0x00, 0x10, 0x0C, 0x00, 0x00, 0x30, 0x06, 0x00, 0x00, 0x60,
  0x0F, 0x80, 0x01, 0xF0, 0x18, 0xE0, 0x07, 0x18, 0x30, 0x7C, 0x3E, 0x0C, 0x20, 0x0F, 0xF0, 0x04
};

const unsigned char PROGMEM baterja [] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xFF, 0xF0, 0x40, 0x00, 0x00, 0x10, 0x47, 0x3C, 0xE0, 0x18,
  0x47, 0xBD, 0xE0, 0x18, 0x45, 0xA5, 0xA0, 0x1E, 0x45, 0xA5, 0xA0, 0x1A, 0x45, 0xA5, 0xA0, 0x1A,
  0x45, 0xA5, 0xA0, 0x1A, 0x45, 0xA5, 0xA0, 0x1A, 0x45, 0xA5, 0xA0, 0x1E, 0x47, 0xBD, 0xE0, 0x18,
  0x47, 0x3C, 0xE0, 0x18, 0x40, 0x00, 0x00, 0x10, 0x3F, 0xFF, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};


const unsigned char PROGMEM temperatura [] = {
  0x00, 0x01, 0x80, 0x00, 0x00, 0x03, 0xC0, 0x00, 0x00, 0x06, 0x60, 0x00, 0x00, 0x04, 0x20, 0x00,
  0x00, 0x04, 0x20, 0x00, 0x00, 0x04, 0x20, 0x00, 0x00, 0x04, 0x20, 0x00, 0x00, 0x04, 0x20, 0x00,
  0x00, 0x04, 0x20, 0x00, 0x00, 0x04, 0x20, 0x00, 0x00, 0x04, 0x20, 0x00, 0x00, 0x04, 0x20, 0x00,
  0x00, 0x04, 0x20, 0x00, 0x00, 0x05, 0xA0, 0x00, 0x00, 0x05, 0xA0, 0x00, 0x00, 0x05, 0xA0, 0x00,
  0x00, 0x05, 0xA0, 0x00, 0x00, 0x05, 0xA0, 0x00, 0x00, 0x05, 0xA0, 0x00, 0x00, 0x0D, 0xB0, 0x00,
  0x00, 0x19, 0x98, 0x00, 0x00, 0x33, 0xCC, 0x00, 0x00, 0x26, 0x64, 0x00, 0x00, 0x6C, 0x36, 0x00,
  0x00, 0x68, 0x16, 0x00, 0x00, 0x68, 0x16, 0x00, 0x00, 0x2C, 0x34, 0x00, 0x00, 0x27, 0xE4, 0x00,
  0x00, 0x33, 0xCC, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x0F, 0xF0, 0x00, 0x00, 0x01, 0x80, 0x00
};
const unsigned char PROGMEM continu [] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x1F, 0xF8, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x03, 0xFF, 0xFF, 0xC0, 0x0F, 0xFF, 0xFF, 0xF0,
  0x1F, 0xC0, 0x03, 0xF8, 0x7F, 0x00, 0x00, 0xFE, 0xFC, 0x00, 0x00, 0x3F, 0xF8, 0x07, 0xE0, 0x1F,
  0xF0, 0x3F, 0xFC, 0x0F, 0x00, 0xFF, 0xFF, 0x00, 0x01, 0xFF, 0xFF, 0x80, 0x03, 0xF0, 0x0F, 0xC0,
  0x07, 0xC0, 0x03, 0xE0, 0x03, 0x80, 0x01, 0xC0, 0x01, 0x0F, 0xF0, 0x80, 0x00, 0x1F, 0xF8, 0x00,
  0x00, 0x3F, 0xFC, 0x00, 0x00, 0x3C, 0x3C, 0x00, 0x00, 0x38, 0x1C, 0x00, 0x00, 0x01, 0x80, 0x00,
  0x00, 0x03, 0xC0, 0x00, 0x00, 0x03, 0xC0, 0x00, 0x00, 0x03, 0xC0, 0x00, 0x00, 0x03, 0xC0, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

const unsigned char PROGMEM resis [] = {
  0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x06, 0x04, 0x00, 0x00, 0x0F, 0x88,
  0x00, 0x00, 0x18, 0xD0, 0x00, 0x00, 0x38, 0x60, 0x00, 0x00, 0x6C, 0x30, 0x00, 0x00, 0xC6, 0x18,
  0x00, 0x00, 0x83, 0x08, 0x00, 0x01, 0x81, 0x8C, 0x00, 0x03, 0x00, 0xCC, 0x00, 0x07, 0x80, 0x78,
  0x00, 0x0C, 0xC0, 0x30, 0x00, 0x18, 0x60, 0x60, 0x00, 0x38, 0x30, 0xC0, 0x00, 0x6C, 0x1B, 0x80,
  0x01, 0xC6, 0x0E, 0x00, 0x03, 0x03, 0x0C, 0x00, 0x07, 0x01, 0x98, 0x00, 0x0D, 0x80, 0xF0, 0x00,
  0x18, 0xC0, 0x60, 0x00, 0x30, 0x60, 0xC0, 0x00, 0x30, 0x31, 0x80, 0x00, 0x10, 0x19, 0x00, 0x00,
  0x18, 0x0F, 0x00, 0x00, 0x0C, 0x06, 0x00, 0x00, 0x06, 0x0C, 0x00, 0x00, 0x0B, 0x18, 0x00, 0x00,
  0x11, 0xF0, 0x00, 0x00, 0x20, 0x60, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00
};

const unsigned char PROGMEM dioda [] = {
  0x00, 0x07, 0xE0, 0x00, 0x00, 0x1F, 0xF8, 0x00, 0x00, 0x3F, 0xFC, 0x00, 0x00, 0x78, 0x1E, 0x00,
  0x00, 0xE0, 0x07, 0x00, 0x00, 0xE0, 0x07, 0x00, 0x00, 0xC0, 0x03, 0x00, 0x01, 0xC0, 0x03, 0x80,
  0x01, 0xC0, 0x03, 0x80, 0x01, 0xC0, 0x03, 0x80, 0x01, 0xC0, 0x03, 0x80, 0x01, 0xC0, 0x03, 0x80,
  0x01, 0xC0, 0x03, 0x80, 0x01, 0xC0, 0x03, 0x80, 0x07, 0xFF, 0xFF, 0xE0, 0x07, 0xFF, 0xFF, 0xE0,
  0x07, 0xFF, 0xFF, 0xE0, 0x07, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00,
  0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00,
  0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00, 0x00, 0x1C, 0x38, 0x00
};

const unsigned char PROGMEM ime [] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF0, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0xFF, 0x00, 0x3F, 0xE0, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xF8, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xFF, 0xE0, 0xFF, 0xF9, 0xFF, 0x00, 0xFF, 0xFD, 0xFF, 0xFC, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xFF, 0xF1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0x7E, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xE7, 0xF9, 0xF8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x1F, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xC0, 0xFF, 0xE0, 0x3F, 0xC7, 0xFF, 0xEF, 0xDF, 0x80, 0x0F, 0x80, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xC0, 0x3F, 0xC0, 0x1F, 0x83, 0xE7, 0xC3, 0x0F, 0x00, 0x07, 0x80, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xC0, 0x1F, 0x80, 0x0F, 0x03, 0x83, 0xC3, 0x06, 0x00, 0x07, 0x80, 0x00, 0x00,
  0x00, 0x00, 0x03, 0x8E, 0x1F, 0x9C, 0x07, 0x03, 0x83, 0x83, 0x8E, 0x00, 0x03, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0x8F, 0x0F, 0x9C, 0x07, 0x01, 0x83, 0x83, 0x8E, 0x0F, 0x83, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0x9F, 0x87, 0x3C, 0x07, 0x00, 0x03, 0x87, 0x9C, 0x1F, 0xC3, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0x9F, 0x87, 0x1C, 0x06, 0x00, 0x03, 0x07, 0x3C, 0x1F, 0xC3, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xDF, 0x87, 0x00, 0x02, 0x0C, 0x03, 0x06, 0x3E, 0x1F, 0xC1, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xCF, 0x82, 0x00, 0x02, 0x0E, 0x03, 0x00, 0x3E, 0x1F, 0xC1, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xCF, 0x82, 0x1C, 0x06, 0x0E, 0x03, 0x06, 0x1E, 0x1F, 0xC3, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xC7, 0x82, 0x3C, 0x06, 0x0E, 0x06, 0x07, 0x0E, 0x0F, 0x83, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xC0, 0x00, 0x1C, 0x06, 0x0E, 0x06, 0x07, 0x8F, 0x07, 0x03, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xC0, 0x04, 0x1C, 0x0E, 0x0E, 0x07, 0x03, 0x8F, 0x80, 0x07, 0xC0, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xC0, 0x0E, 0x1C, 0x0E, 0x0E, 0x07, 0x03, 0x0F, 0x80, 0x0F, 0x80, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xC0, 0x1E, 0x18, 0x1E, 0x1E, 0x0F, 0x83, 0x0F, 0xE0, 0x3F, 0x80, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xE0, 0x3F, 0xFF, 0xFF, 0xFF, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xF8, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0xFF, 0xFB, 0xFF, 0xF7, 0xFF, 0xFC, 0xFF, 0xFC, 0x7F, 0xE0, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x7F, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
int pauza = 300;
int raw = 0;
float Vin = 0;
float Vout = 0;
float R1 = 2000;
float R2 = 0;

float vout2 = 0.00;
float vin2 = 0.00;
float res1 = 100000.00; // resistance of R1 (100K)
float res2 = 10000.00; // resistance of R2 (10K)
int val = 0;
float buffer = 0;
void setup()   {
  sensors.begin();

  pinMode(5, INPUT_PULLUP);
  pinMode(4, INPUT_PULLUP);
  pinMode(3, INPUT_PULLUP);
  pinMode(13, OUTPUT);
  attachInterrupt(1, pritisnuto, FALLING);
  // by default, we'll generate the high voltage from the 3.3v line internally! (neat!)
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  // initialize with the I2C addr 0x3C (for the 128x32)
  // init done




  display.clearDisplay();
  display.drawBitmap(0, 0,  ime, 128, 32, 1);
  display.display();
  delay(700);
  display.clearDisplay();
  display.display();
}
int maksimum = 1;
int minimum = 1024;
int stisnuto = 0;
unsigned long brojPuta = 0;
unsigned long zbroj = 0;
int prosjek = 0;
int pulse = 125;
unsigned long m = 0;
void loop()
{

  if (stisnuto == 0)
  {
    float volt3 = readVcc() / 1000.0;
    val = analogRead(7);
    vout2 = (val * volt3) / 1024.0; // see text
    vin2 = vout2 / (res2 / (res1 + res2));
    display.clearDisplay();
    display.setFont();
    display.setTextColor(WHITE);
    display.setCursor(0, 0);
    display.print("VOLTMETER:");
    display.setCursor(80, 0);

    display.print(volt3);

    display.setFont(&FreeSans9pt7b);

    display.setCursor(0, 24);
    display.print(vin2 + 0.1);
    display.display();
    delay(500);
  }

  if (stisnuto == 1)
  {

    if (digitalRead(4) == 0)
    {
      delay(100);
      minimum = 1024;
      maksimum = 0;
      brojPuta = 0;
      zbroj = 0;
    }
    display.clearDisplay();
    display.setFont();
    display.setTextColor(WHITE);
    display.setCursor(0, 0);
    display.setTextSize(1);

    display.print("ANALOG");
    display.setCursor(95, 0);

    int vrije = analogRead(A0);
    brojPuta = brojPuta + 1;
    zbroj = zbroj + vrije;
    prosjek = zbroj / brojPuta;

    if (vrije > maksimum)
      maksimum = vrije;
    if (vrije < minimum)
      minimum = vrije;


    int snaga = map(vrije, 0, 1024, 0, 128);
    float voltaza = readVcc();
    display.print(prosjek);
    display.setCursor(70, 0);
    display.print("AVE:");

    display.setCursor(70, 10);
    display.print("MAX:");
    display.setCursor(70, 20);
    display.print("MIN:");
    display.setCursor(95, 10);
    display.print(maksimum);
    display.setCursor(95, 20);
    display.print(minimum);

    display.setFont(&FreeSans9pt7b);

    display.setCursor(0, 24);
    display.print(vrije);

    display.drawLine(0, 31, snaga, 31, 1);
    display.display();

    if (brojPuta > 100000)
    { brojPuta = 0;
      zbroj = 0;
    }

  }

  if (stisnuto == 2)
  { // ohm meter
    display.clearDisplay();
    display.setFont();
    display.setCursor(0, 0);
    display.print("RESISTANCE:");
    display.drawBitmap(96, 0,  resis, 32, 32, 1);
    raw = analogRead(A2);

    Vin = readVcc() / 1000.0;
    buffer = raw * Vin;
    Vout = (buffer) / 1024.0;
    buffer = (Vin / Vout) - 1;
    R2 = R1 * buffer;
    display.setFont(&FreeSans12pt7b);

    display.setCursor(0, 28);
    if (R2 < 70000)
      display.print(R2);
    if (R2 > 70000)
      display.print("empty");

    display.display();
    delay(pauza);
  }

  if (stisnuto == 3) //dioda drop
  {
    display.clearDisplay();
    display.drawBitmap(96, 0,  dioda, 32, 32, 1);
    display.setFont();
    display.setCursor(0, 0);
    display.print("VOLTAGE DROP:");
    raw = analogRead(A2);

    Vin = readVcc() / 1000.0;
    buffer = raw * Vin;
    Vout = (buffer) / 1024.0;

    display.setFont(&FreeSans12pt7b);

    display.setCursor(0, 28);
    if (Vout == 0)
    {
      display.print("0");
    } else {
      display.print(Vin - Vout);
    }
    display.display();
    delay(pauza);
  }

  if (stisnuto == 4)
  { //continuiti
    display.clearDisplay();
    display.drawBitmap(96, 0,  continu, 32, 32, 1);
    display.setFont();
    display.setCursor(0, 0);
    display.print("CONTINUITY TEST:");
    display.setFont(&FreeSans12pt7b);

    display.setCursor(0, 28);


    raw = analogRead(A2);

    Vin = readVcc() / 1000.0;
    buffer = raw * Vin;
    Vout = (buffer) / 1024.0;
    float rez = Vin - Vout;
    if (rez < 1)
    {
      tone(6, 2250);
      display.print("Yes");
      digitalWrite(13, 1);
    }
    if (rez > 1)
    {
      noTone(6);
      digitalWrite(13, 0);
      display.print("No");
    }
    display.display();
  }

  /*   if(stisnuto==5)
    {//temp
     noTone(6);
      sensors.requestTemperatures();
      float temp= sensors.getTempCByIndex(0);
    display.clearDisplay();
    display.drawBitmap(96, 0,  temperatura, 32, 32, 1);
    display.setFont();
    display.setCursor(0,0);
    display.print("TEMPERATURE:");
    display.setFont(&FreeSans12pt7b);

    display.setCursor(0,28);
    display.print(temp-2);
    display.setCursor(70,28);
    display.print("C");


      display.display();
       delay(pauza);
     }
  */
  if (stisnuto == 6)
  { //baterry

    display.clearDisplay();
    display.drawBitmap(96, 0,  baterja, 32, 32, 1);
    display.setFont();
    display.setCursor(0, 0);
    display.print("BATERRY:");
    display.setFont(&FreeSans12pt7b);

    display.setCursor(0, 28);
    float volt2 = readVcc() / 1000.0;
    display.print(volt2);
    display.setCursor(55, 28);
    display.print("V");



    display.display();
    delay(pauza);
  }

  if (stisnuto == 7)
  {

    if (digitalRead(4) == 0)
    { if (pulse < 255)
      {
        tone(6, 1800, 10);
        pulse = pulse + 2;
      }
    }

    if (digitalRead(5) == 0)
    { if (pulse > 1)
      {
        tone(6, 1400, 10);
        pulse = pulse - 2;
      }

    }
    int snaga2 = 0;
    analogWrite(9, pulse);
    display.clearDisplay();
    display.drawBitmap(72, 1,  ppwwmm, 58, 30, 1);
    display.setFont();
    display.setCursor(0, 0);
    display.print("PULSE WIDTH:");
    display.setFont(&FreeSans12pt7b);
    display.setCursor(0, 28);
    display.print(pulse);
    snaga2 = map(pulse, 0, 255, 0, 128);
    display.drawLine(0, 31, snaga2, 31, 1);
    display.display();
  }





}

void pritisnuto()
{

  static unsigned long last_interrupt_time = 0;
  unsigned long interrupt_time = millis();
  // If interrupts come faster than 200ms, assume it's a bounce and ignore
  if (interrupt_time - last_interrupt_time > 220)
  {
    stisnuto++;
    tone(6, 2250, 50);
    if (stisnuto > 7)
      stisnuto = 0;
  }
  last_interrupt_time = interrupt_time;




}
long readVcc() {
  // Read 1.1V reference against AVcc
  // set the reference to Vcc and the measurement to the internal 1.1V reference
#if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
  ADMUX = _BV(REFS0) | _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
#elif defined (__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__)
  ADMUX = _BV(MUX5) | _BV(MUX0);
#elif defined (__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
  ADMUX = _BV(MUX3) | _BV(MUX2);
#else
  ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
#endif

  delay(2); // Wait for Vref to settle
  ADCSRA |= _BV(ADSC); // Start conversion
  while (bit_is_set(ADCSRA, ADSC)); // measuring

  uint8_t low  = ADCL; // must read ADCL first - it then locks ADCH
  uint8_t high = ADCH; // unlocks both

  long result = (high << 8) | low;

  result = 1125300L / result; // Calculate Vcc (in mV); 1125300 = 1.1*1023*1000
  return result; // Vcc in millivolts
}

ERROR:

Arduino: 1.8.13 (Windows 7), Board: "Arduino Uno"

E:\ENGINEERING\DIY\Electronic\meter\Arduino Multimeter\Arduino Multimeter and Components 

Tester\multifunctionArduino_M\multifunctionArduino_M.ino: In function 'void setup

()':multifunctionArduino_M:179:3: error: 'sensors' was not declared in this scope   sensors.begin();   

^~~~~~~exit status 1'sensors' was not declared in this scope

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

pert · June 20, 2021, 10:25pm

You commented out the declaration of sensors so the error message is to be expected.

shanren · June 20, 2021, 10:32pm

Thanks.
I enabled:

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

and included:

#include <OneWire.h>
#include <DallasTemperature.h>

So now got:

Arduino: 1.8.13 (Windows 7), Board: "Arduino Uno"
multifunctionArduino_M:20:17: error: 'ONE_WIRE_BUS' was not declared in this scope

 OneWire oneWire(ONE_WIRE_BUS);

                 ^~~~~~~~~~~~

E:\ENGINEERING\DIY\Electronic\meter\Arduino Multimeter\Arduino Multimeter and Components Tester\multifunctionArduino_M\multifunctionArduino_M.ino:20:17: note: suggested alternative: 'ONEWIRE_CRC'

 OneWire oneWire(ONE_WIRE_BUS);

                 ^~~~~~~~~~~~

                 ONEWIRE_CRC

Multiple libraries were found for "OneWire.h"

 Used: C:\Users\HUA.DELLV-PC\Documents\Arduino\libraries\OneWire

 Not used: C:\Users\HUA.DELLV-PC\Documents\Arduino\libraries\OneWire-2.3.5

exit status 1

'ONE_WIRE_BUS' was not declared in this scope



This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

pert · June 20, 2021, 11:04pm

This line has ended up being commented out by this line:

shanren · June 20, 2021, 11:10pm

@pert.
perfect done !
Thank you.

pert · June 20, 2021, 11:33pm

You're welcome. I'm glad if I was able to be of assistance. Enjoy!
Per

system · October 18, 2021, 11:34pm

This topic was automatically closed 120 days after the last reply. New replies are no longer allowed.

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'sensors' was not declared in this scope

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