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Voice chip is ingeniously made rain forecaster

News by ninechip | On 2018-07-09 08:44

Today, we teach you how to use voice chip to make rain alarm. The rain alarm is mainly used at home. For example, we watch TV at home and hang out clothes or quilts outside, but the weather suddenly rains, we know in the house, and it's too late when we know.

Then we need a rain alarm. How should I make it? First we look for a bare copper plate. We use a knife or a corrosive method to make a figure similar to a tuning fork. The two tuning forks are intersected but not short circuited. This is a simple humidity sensor. Then, one part of the humidity sensor is connected to the trigger foot of the voice chip, and the other end connects the positive or negative of the voice chip, which is selected according to the trigger mode of the voice chip. If the voice chip is high level trigger, connect the positive pole, otherwise connect the negative pole. After this connection, a comparison circuit and a connecting horn are built for the external chip of the voice chip. So it's done. Is it very simple? You can find a battery box and install two batteries to power the voice chip. Because the voice chip will automatically enter the power saving state when there is no sound, so there is no need to worry about power consumption. The general voice chip is powered by two AA batteries and can work for 2-3 years in the dormancy state. This simple and easy to use voice rain reminder is ready.

Responsible editor (Guangzhou nine core electronic science and Technology)

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