I need help from a great God to look at this circuit diagram, thank you very much

阿迪eddy

I need help from a great God to look at this circuit diagram, thank you very much [Copy link]

I recently bought an air purifier and wanted to achieve two functions:

1. Start the machine by incoming call without pressing the power button.

2. The purifier originally has the function of adjusting the gear. After realizing the first function, the function of adjusting the gear is retained.

However, now only the first call start (capacitor and resistor trigger start) can be realized, and the second function cannot realize gear adjustment.

I hope some experts can give me some advice on how to control this circuit board and what methods can be used to achieve it?

Thanks to the experts for their advice. You can reply for a fee. Thank you, thank you!!

Circuit board diagram:

阿迪eddy

It is an OLOR brand air purifier.

qwqwqw2088

So-called: Start by incoming call without pressing the machine's power button.

Did you remove the built-in power switch and connect it directly to the power supply?

wangerxian

Does it mean it starts when powered on?

Without a schematic, I can only measure.

bigbat

If it is a push button switch, just add a small microcontroller board and use MOS on it.

阿迪eddy

qwqwqw2088 posted on 2022-3-28 13:28 The so-called: to achieve the power on when the phone is turned on, without pressing the power button of the machine. Is it to remove the built-in power switch and connect it directly to the power supply?

Yes

阿迪eddy

wangerxian posted on 2022-3-28 13:29 Does it mean that it starts when powered on? There is no schematic diagram, so I can only measure it.

I can't understand this circuit board and I can't measure it.

阿迪eddy

bigbat posted on 2022-3-28 14:26 If it is a push button switch, just add a small microcontroller board with MOS on it.

Could you please give me more details? Thank you!!

lugl4313820

You can use another microcontroller to control it more flexibly. Learn about ESP32

wangerxian

Adi eddy posted on 2022-3-28 15:38 I can't understand this circuit board and I can't measure it

That's difficult enough. You can press the button first and measure the changes in the electrical levels of components near the button, but this requires an experienced person to do it.