What items are needed for PM2.5 detector based on 5 1 single chip microcomputer?

PM2.5 sensor, available on Taobao, is the price. You know, it's cheap but not good. Then, if possible, make a shaping circuit, which needs an operational amplifier, mainly to shape the waveform output by the sensor. Then add a display. Organic light-emitting diodes are good, small and high resolution, especially suitable for handheld devices, but a little expensive. Then the power module. Go to TI to apply for several power chips and switch to 5V type (ps, operational amplifier can also be applied). There are other crystal oscillators, keys, resistors and capacitors, and nothing more. You can go to Taobao to see the molded PM2.5 detector and see which modules are on it, so that you will have a better understanding.

What should I do if the nose tip in Shanghai is not good?

My daughter wants to go to the First Hospital of Harbin Medical University to do catgut embedding double eyelid surgery. I want to ask about the cost.

Where can I cut double eyelids in Qingxi, Dongguan?

Miley Miley Video Fill should be set every time.

Preventive measures for forehead depression

Where does Zhengzhou do double eyelids?

Advantages of a 40-year-old woman

Can the tattoo on the arm be removed?

What about the surrounding facilities of Feng Dan Egret Community in Fuzhou?

I have been suffering from rhinitis in Urumqi Air Force Hospital for more than ten years. The left side has a stuffy nose and a lot of runny nose, but I don't know. I can only sleep on the right.