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It mainly depends on what materials you have, such as an old flashlight.
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Take it out and enjoy it for everyone.
There is experience, there is a self-made process in it, with tape, a hard card can be, but why make a homemade mobile phone holder, it is not good-looking, and it hurts the phone, you can go to the "lazy mobile phone holder" sticker bar to find out if there is a suitable one, recommend a Jiexun brand, not bad.
LED night light drive circuit, directly modify the regulator tube Z1, the original, change to 7V, you can go.
If it is recommended to open the motor on the oil cotton of the upper and lower shaft sleeves and add oil, because the current small motors are one-time design, there is no oil injection hole, pay attention not to damage the coil when disassembling. If the shaft is flexible, it may be a problem with the capacitor or the coil.
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