L298N speed controll problem

hi, i have a working thing, what is now desn't do what its need to do. :smiley:

i make it work with arduino nano and with mega, but no non of this works.

what i want:
controlling the speed of a dc motor with arduino using l298n driver. it's working for months but since weeks it doesn't.

issue:
the motor seems to run like half or third of the original speed.

what i try:

  • new arduino + new l298n = same issue
  • motor directly connect to power supply = full speed
  • new usb cable = same issue


(pwm 8-9 = d8-9)

i dont change anything, everything is corret, but somehow doesnt work. :smiley: any idea?

pls delet it. i figured it out. :smiley: