This is not an advertisement, administrator, please be merciful. Now it has been modified, the logic function is completely normal, and it does not affect the use of the APP. This modification involve
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How can a microcontroller use 5v to control the on/off of 18v? I need to use a transistor to control the voltage I want to use is 18v, and I need to use a microcontroller to control the on/off of 18v.
Question: I use the firmware library to program in stm32f103 to make the TIM3 of the general timer output four PWM waves. I want to use the button to adjust the duty cycle of PWM when the program is e