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Made a simple Bluetooth speakers (3)

Wednesday on April 29th, 2020Life

With an old box made of wood affixed to the paper, wood paper paste or difficult, it would be enough. Plus the switch, start the store made a mistake, made a six-foot switch to me, then again to buy two feet. The further addition of the lithium battery, so that no power plug, to achieve a wireless function section 4 2200mA lithium batteries connected in series, the voltage 14.8V voltage just to meet the requirements of the amplifier board, power quite enough, now to buy He has not been charged. Do not charge module, because it feels very sad, efficiency is not high, directly Chargers better. Speakers and speaker enclosures are on the screws, fixed with hot melt adhesive, very strong.

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