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you can make an automatic watering device to prevent your plants from withering due to a lack of water when you are not at home for a long time or have passed the watering time
or other objects
you can access to all interfaces of Raspberry Pi conveniently
It is widely used in 3G network products
18650 Li-Ion Battery 3.7V 2200mAh sensors you can make an automaticThis is a standard 2200mAh capacity 18650 cell for normal, non high drain applications. This is a typical Lithium Ion rechargeable battery in cylindrical shape that offer 2200mAh actual capacity. It is a very low cost solution in electronic projects or small mobile robots that do not require high discharge current. This cell is flat top and is ideally suited for devices requiring a flat topped battery to the positive terminal. Specifications: Standard
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