Use stm32 control relay, high level trigger, IN the mouth with IO control don't respond, open the mouth input PWM can normal suction, novice, bosses answer

CodePudding user response:

IO port output type is push-pull output?

CodePudding user response:

The

reference 1/f, a tree may reply:

IO mouth output type is push-pull output?

yes

CodePudding user response:

Determine the relay is instead high level and low level off? Have the circuit diagram?

CodePudding user response:

Measure the level is not enough

CodePudding user response:

reference oasis fog of 4th floor response:

measure whether level and depth of

Level is 3.3 V, the relay signals are usually a few w V?

CodePudding user response:

Press the logo need 5 v, on the relay would JDVCC and VCC the jumper cap off, for 5 v

CodePudding user response:

refer to 6th floor zgl7903 response:

press the logo need 5 v, on the relay would JDVCC and VCC the jumper cap off, for 5 v

Oh, thank you, the problem has been solved, thank you