PWM-DAC adjusts LED lights

赵薇0317

Read the value of the potentiometer through AD conversion, adjust the duty cycle according to the value of the potentiometer, and then adjust the output DC voltage and the brightness of the LED. In layman's terms, the potentiometer is the knob of a desk lamp, and the LED is the desk lamp. Main function: main() { temp1=Read_AD_Data(0x94)//Convert potentiometer valueif(counts>100) { counts=0; if(DIR==1)//Control the increase or decrease of variable valuevalue++; if(DIR==0) value--; } if(value==1000) DIR=0; if(value==0) DIR=1; if(temp1

The question is, in reality, can your LED desk lamp support you to use PWM to control the switch?

[quote][size=2][url=forum.php?mod=redirect&goto=findpost&pid=2363832&ptid=644206][color=#999999]ywlzh posted on 2018-5-9 15:08[/color][/url][/size] The question is, in reality, can your LED desk lamp support you to use PWM to control the switch? [/quote] The DC voltage generated by PWM will be connected to the LED. There is no problem with the hardware. There is another part in my entire program, which will use delays and other statements. Will this make the time longer and slower? The human eye can distinguish the on and off of the light, so we see the flickering phenomenon

[quote][size=2][url=forum.php?mod=redirect&goto=findpost&pid=2363921&ptid=644206][color=#999999]Zhao Wei 0317 Published on 2018-5-9 17:44[/color][/url][/size] The DC voltage generated by PWM will be connected to the LED. There is no problem with the hardware. There is another part in my entire program, which will use delay, and...[/quote] The timer is not turned on

I don't quite understand the program you wrote. I have done LED dimming with a microcontroller before. I modified the table lamps at home and it works fine now. But it was adjusted with buttons. Some MCUs have PWM functions, which are the simplest. Just configure them directly. I have also used timers. I used two timers, one to control the frequency and the other to control the duty cycle. The adjustment effect is very good.

PWM-DAC adjusts LED lights

ywlzh

The question is, in reality, can your LED desk lamp support you to use PWM to control the switch?

赵薇0317

ywlzh posted on 2018-5-9 15:08 The question is, in reality, can your LED desk lamp support you to use PWM to control the switch?

The DC voltage generated by PWM will be connected to the LED. There is no problem with the hardware. There is another part in my entire program, which will use delays and other statements. Will this make the time longer and slower? The human eye can distinguish the on and off of the light, so we see the flickering phenomenon

半亩先生

Zhao Wei 0317 Published on 2018-5-9 17:44 The DC voltage generated by PWM will be connected to the LED. There is no problem with the hardware. There is another part in my entire program, which will use delay, and...

The timer is not turned on

万年落第生

I don't quite understand the program you wrote. I have done LED dimming with a microcontroller before. I modified the table lamps at home and it works fine now. But it was adjusted with buttons. Some MCUs have PWM functions, which are the simplest. Just configure them directly. I have also used timers. I used two timers, one to control the frequency and the other to control the duty cycle. The adjustment effect is very good.