Skip to main content
Arduino

Return to Answer

Attempt to make it readable
Source Link
per1234
per1234
  • 4.3k
  • 2
  • 24
  • 44

thereThere are some issueissues with your map command for.

For example, you are reading value fromthe thermistor from A0value using analogRead(A0), which has parametersa return range from 0 to 1023 and after. After that you attempt to use command map() andmap() to change this value to 0 - 255 or you want to do this, but use the rightwrong syntax. The correct syntax for this command is "Input = map(analogRead(0), 0, 1023, 0Input = map(analogRead(0), 0, 1023, 0, 255);. However, 255);" but I cantcan't see the reason for that because you are reading valuevalues 0-1023 and, change it to 0-255 and, but set point is 650 so. So you never get setpoint because maximum is 255. so try

Try use as input just analogread(0), there sianalogread(0). There is no reason to change input into pwmPWM range and output is for PID library in PWM range as a default so you can send output direct to motor pin, off. Of course use some H-bridge or something like that.

there are some issue with map command for example you are reading value from thermistor from A0 which has parameters from 0 to 1023 and after that you use command map() and change this value to 0 - 255 or you want to do this, but the right syntax for this command is "Input = map(analogRead(0), 0, 1023, 0, 255);" but I cant see reason for that because you are reading value 0-1023 and change it to 0-255 and set point is 650 so you never get setpoint because maximum is 255. so try use as input just analogread(0), there si no reason to change input into pwm range and output is for PID library in PWM range as a default so you can send output direct to motor pin, off course use some H-bridge or something like that.

There are some issues with your map command.

For example, you are reading the thermistor value using analogRead(A0), which has a return range from 0 to 1023. After that you attempt to use map() to change this value to 0 - 255 but use the wrong syntax. The correct syntax for this command is Input = map(analogRead(0), 0, 1023, 0, 255);. However, I can't see the reason for that because you are reading values 0-1023, change it to 0-255, but set point is 650. So you never get setpoint because maximum is 255.

Try use as input just analogread(0). There is no reason to change input into PWM range and output is for PID library in PWM range as a default so you can send output direct to motor pin. Of course use some H-bridge or something like that.

Source Link
Morfik
Morfik
  • 1

there are some issue with map command for example you are reading value from thermistor from A0 which has parameters from 0 to 1023 and after that you use command map() and change this value to 0 - 255 or you want to do this, but the right syntax for this command is "Input = map(analogRead(0), 0, 1023, 0, 255);" but I cant see reason for that because you are reading value 0-1023 and change it to 0-255 and set point is 650 so you never get setpoint because maximum is 255. so try use as input just analogread(0), there si no reason to change input into pwm range and output is for PID library in PWM range as a default so you can send output direct to motor pin, off course use some H-bridge or something like that.