Shadow Walkers

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It is still happening. I'm also getting the same exception on macOS.

I'm connecting it with laptop. Even my device is using battery so i also checked it by removing USB and run it on DC battery supply

No the LED didn't blink when i removed the pulse sensor..

I'm making a wearable pulse monitor that's why i can't use UNO i have limited and that is the reason i'm using Pro mini

Should i edit the timer interrupt or should i switch to timer2? As the the pulse sensor code is compatible with arduino UNO by default

Ok i'll try it.. 1 more thing as there is nothing connected on pin 5 of arduino pro mini. What will be the effect of fade?? As arduino pro mini...

I did this in interrupt.ino where it is reading from A0

Ok i'll try that... I'm using arduino pro mini and i'm using timer1 as it mentioned that is used 9 and 11 pin and my 9th and 11th pin are...

which is more stable? and what is the threshold value so that i could minimize the noise

Okay.. please suggest me which timer i should use for pro mini 5v 16mhz ?