Error Message coding neopixel strip

Projects Programming
1

I am trying to use a force sensor to change the color of a neopixel strip. I have three incremental force readings at which to change the color. When compiling the code I receive the error message, ("strip" was not declared in this scope) only for the last of the 3 iterations. Can anyone help explain what I need to do to fix this? Many thanks!!!!

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif

void setup() {
  // put your setup code here, to run once:
 
int Num_Pix=60; //60 pixels

int PINring=6;   // assign strip to pin 6


 Adafruit_NeoPixel strip = Adafruit_NeoPixel(Num_Pix, PINring, NEO_GRB + NEO_KHZ800);

strip.begin();
strip.show();
uint32_t Blue=strip.Color(0,0,255);  //set colors
uint32_t Red=strip.Color (255,0,0);
uint32_t Purple=strip.Color(127,0,127);

}


void loop() {
  // put your main code here, to run repeatedly:
  
int Num_Pix=60;
int val;
int weightsensor=A1;  //set force sensor to analog pin

val=analogRead (weightsensor);  //set val to force sensor reading


if (val>600){         //if sensor reads over 600 turn strip red

for    (int i=0; i<Num_Pix; i++)
   strip.setPixelColor(i,Red);
   
   strip.show();
    delay (10);

else    

if (val>300) {                        //if sensor reads over 300 turn strip purple
for    (int i=0; i<Num_Pix; i++)
   strip.setPixelColor(i,Purple);
   
   strip.show();
    delay (10);
      
    }

else    

if (val>100){                          //if sensor reads over 100 turn strip blue
for    (int i=0; i<Num_Pix; i++)
   strip.setPixelColor(i,Blue);
   
   strip.show();
    delay (10);
    }

        
    }
2

Where did you get the code?

Indeed strip is not defined inside loop( )

3 
strip.begin();
strip.show();

What function do you (mistakenly) believe that this code is in? ALL function calls MUST me in a function.

4

PaulS:

strip.begin();

strip.show();



What function do you (mistakenly) believe that this code is in? ALL function calls MUST me in a function.

You are mistaken. @PaulS... they are in the setup() function.

but the strip object needs to be global, so the constructor:

Adafruit_NeoPixel strip = Adafruit_NeoPixel(Num_Pix, PINring, NEO_GRB + NEO_KHZ800);

should move that above setup()